The PEX pipe has been already on the market for a long time. During the presence of this product among other plumbing installations, it was more than obvious that many people tend to prefer now PEX piping instead of other materials. PEX pipe systems are cheaper, stronger than PVC and a lot faster to install than iron pipes. For instance, the heating PEX piping system; in this case the whole installation will be reduced to half the time needed for an iron heating system. The heating system will obviously run on hot water PEX pipe installs, so the PEX plumbing pipe installations required must be made out of PEX-AL-PEX which is a much stronger material than the one normally used for PEX piping. This type of PEX plumbing pipe is able to handle hot water pressure a lot better than the regular PEX pipe, and can last for about 60 years without needing for replacements.PEX plumbing pipe installs are also able to retain heat a lot better than the regular PEX piping systems, so some electric power will be saved during the home heating process. Changing the old iron installations on a PEX plumbing pipe system may be a good idea, especial for larger homes, in which the quantity of iron pipes required for heating is quite large. In this case, money and time will be saved and the installation will be done much faster for a much lower price when compared to an iron piping heating system.

Generally, the heating pipes systems will be installed beneath the floor or inside the walls. This is a major disadvantage of the PEX pipes. If a pipe gets damaged, the walls or floors must be taken down in order to replace the pipe. To avoid such an unpleasant renovating process, it is highly recommended for PEX-AL-PX pipes to be used for the home heating system.

Even more than this, once a pipe starts to crack, it is very likely for the fittings and other pipes around to give in ass well, especially if the materially purchased is low quality.

http://www.greenbuildingadvisor.com/blogs/dept/green-building-blog/how-safe-pex-tubing

People who need to replace the heating system will also consider the prices they pay not only for the materials, which they’ll be looking for on sale, but also to how much the plumber charges for this operation. Since PEX is an easy material to install, and the time required for its installation is considerably lower than the time for installing iron pipes, the charging for mounting the pipes will be a lot less than the price paid for installing the iron pipes.

Primary issues which a PEX pipe are generally related to the life span time period of the actual tube. The PEX pipe lasts for around 50 years, but just in some factors. The pipe really should have cold water running through it; it has to be set not even close the hot water tube so that water vapors won’t condense on it, plus it ought to be reinforced if it is a hot water pipe.

PEX piping tools are costly, and these are needed all the time the PEX plumbing pipe ought to be changed. Because of the fact that replacements may be necessary typically, the equipment ends up being obtained. Any PEX pipe is preferred by almost all people today, however the PEX pipe has a few down sides when you compare to the iron water line.

One of the major challenges in a PEX plumbing pipe from the above counted is the water vapors condense. Most of the people use the PEX piping system indoors for the kitchen or the bathing room. So, it happens to be practically inevitable for the cold water pipe to be close to the hot water pipe. Therefore, water could be dripping on the ground not from the PEX plumbing pipe, but with the vapors that form within the two hoses.

Then again, the iron line cannot reduce this matter, and the water on it is going to be leading to corrosion to show up to the conduit which enables it to damage things all over, such as kitchen house furniture.

When compared with the metal tubing, the PEX plumbing pipe needs to have less fixtures and is also much easier to put in. Another plus that the PEX piping system holds over the metal conduit is the selling prices paid for installation and buying the parts. The Copper pipe are more expensive compared to a PEX pipes, therefore takes a lot a bit longer to build a metal domestic plumbing system compared with a PEX piping system.

Some might be after appearance even though it comes to their piping solutions. So, PEX can be an improved option. The PEX pipes come in a diversity of tones, and on can be pick out red-colored designed for hot water, blue for cold water, and green for gas pipe joints and many others.

The fittings must also be included into the price, however one can be less than 2$, and thus the quantity will change the price, not the quality of the products so small such as fittings.

When used for the house heating system, the PEX pipe roller will cost for over 400$, due to the large quantity of PEX piping tubes needed.

One can find the best prices for PEX plumbing pipe online, because here one can get free shipping and other fees applied in stores are cut off.  Also, due to the great variety of PEX plumbing pipe systems and tools, the competitors need to come up with lower prices and promotions. The PEX piping tools are also included in promotions, and whenever buying a large quantity of PEX piping tools one can get a major discount or tools as a gift.

Overall, the PEX plumbing pipe can be found at low costs and high quality only in stores online, and only by those that search quite a while, rather than buying directly from the first store or offer they can get.

PEX plumbing pipe installs can also be found on real stores. Here retailers add a few extra fees, but during promotions, or stock clear offs these products can get really cheap. However, looking for such an option can take a lot of time, and most people need to change the installations fast, not next month or next summer.

To find best prices for PEX tubing pipes one must search for a while. This is highly recommended especially if one needs to buy large quantities of PEX. Another way to get a small price in large quantity purchase is to buy directly from the producer, which might give a discount up to 20% off the initial price.

So that you can change the PEX piping tube make sure you block the water supplier to the water pipe. Remove the old PEX piping tube and evaluate the replacement one on that dimensions to help you get the same exact conduit, but with a brand new PEX piping tube. Put the fitting in the ends of the PEX plumbing tubing , and be certain if it is suitably placed. Position the PEX plumbing tubing on the inside of the water installing fitting and seal this while using copper rings. Carry out precisely the same on both ends. When you’ve got water dripping from installation, this in essence means that the PEX plumbing tubing has not been set up accurately and you have get it done from the start.

If you don’t figure out clearly easy methods to mount the tubing from articles and reviews online, it is easy to turn to videos about the best way to fit a PEX tube. These types of training videos can show one what to set, and exactly where. Hearing and seeing the entire practice can prove to be so much more descriptive rather than reading stuff regarding how to place the pipe.

Why invest a ton of money for the plumber’s services to remove and replace the tubing, when you can finally build it yourself?

However, you ought to purchase the tools you will certainly be applying if you want to restore the conduit. This tends to end up being money saving method, as one can never tell precisely what plumbing might require replacing around the house.

Just about all the types of polymer bonded, PEX-a, PEX-b and PEX-c may end up bended to 90 point angles, so generally there is simply no requirement to cut any tube to make a new fitting, that will be not only bad looking, yet even may result in several severe difficulties whenever applied for gas, due to the fact that fixtures may well favor gas loss.

PEX tubing may often be installed in one day, as opposed to pipes which could require several weeks to be mounted, particularly if the plumbing will be positioned inside any huge house.

All sorts of PEX supply applied, PEX-a, PEX-b or PEX-c, can be purchased for the same price as well as the component of the installment will certainly be exactly same.

Polymer tubing experiences a single issue, which is very hot water. Make sure to choose a strong polymer tube for this kind of fitting, and consider whenever possible to prevent putting the hot water tube next to the cold water pipe. The occurrence experienced listed here will certainly create a large amount of water because of steams on the cold water tube. This specific fluid will drip on the ground and damage the floor coverings or go straight down to the downstairs neighbors that will certainly not get delighted to redesign their restroom.

Whenever choosing the polymer plumbing for gas installs, all these may be far more protected and less dangerous than normal pipes.

3/8″ x 600ft PEX Tubing with Oxygen Barrier from Everhot Company.

PEX tubing tools and also PEX tubing mounting units are cost in accordance with quality and also the utilization of these methods. As an illustration, a PEX tubing sale cost for just a polymer pipes support will likely be about 100$ cheaper when compared with a PEX tubing sale selling price for a pneumatic gun to add clips over the water pipe.

1/2″ x 600ft PEX Tubing with Oxygen Barrier with Free shipping.

PEX tubing tools are split into a lot of types that are generally inexpensive for virtually any sort of spending budget. Nonetheless, in regards to PEX tubing gadgets, merely people that tend to be prepared invest a lot of money has enough money to obtain this sort of methods. PEX tubing accessories can be purchased mainly on virtually any PEX tubing store online, but also in a standard PEX tubing store. PEX tubing equipments may boost the good quality of work in piping, but it really could also allow for one to wrap up the job faster.

3/4″ x 1000ft OxyPex Tubing with Oxygen Barrier

As soon as the main piping system ought to be changed, one has to shop for many of the tools or equipments necessary. Thinking about that a firm can deal with this is a great strategy, but purchasing the tools will mean always keeping the equipment, thus keeping a lot of dollars when the piping application requires replacing.

Normally, for the small to medium sized steaming installation, you shouldn’t have for such gadgets, but quality instruments plus accessories are obligatory. Also, to assure no leakage, one need to have for a small set up installing, at least the pneumatic gun clips to help guarantee virtually no water will drop from the fitting.

5/8″ x 1000ft PEX Tubing with Oxygen Barrier Free shipping

Everhot

For a lot of people today obtaining the PEX equipments is merely optional, for a plumber having credentials this gear and accessories to mount polymer pipe joints are vital.

1″ x 100ft PEX Tubing with Oxygen Barrier Free shipping

Everhot

Inspire of the solid material applied these days to create PEX pipes as well as replacements, sometimes if utilized for hot water the pipe joints may damage easier and require replacing. However, using a minimum of resources demanded at home for changing PEX pipes can mean that a pipe may be mounted on the spot, and never having to pay out for a plumber’s service.

Polyethylene (PE) pressure used for internal and external pressure pipelines. Pipes meet the requirements for installation and operation of the pipes in winter conditions. PE pipe outside diameter from 20 to 63 mm combined with PEX or brass fittings with rubber O-ring, as well as using electric couplings. Pipe diameters from 63 mm to 160 mm connected butt welding. Produced polyethylene pipes for high and low pressure: LDPE and HDPE. Non-pressure polyethylene pipes in diameter from 50 mm to 110 mm are designed for domestic sewage.

Pipe cross-linked polyethylene (PEX)

To make the resistance of polyethylene to high temperatures it is treated under high pressure. In this way, it turns out “cross-linked polyethylene. Crosslinked polyethylene used for heating and water supply. These tubes are mounted with compression fittings.

PEX pipes have been used in water systems, underfloor heating.

Pipes from metal-polymers PEX-AL-PEX

Metal pipes appeared on the market recently. Metal pipes PEX-AL-PEX pipe with an inner layer of aluminum foil. The latter is designed to reduce the coefficient of linear expansion of PEX-pipes.

If you only install PEX tubing is hidden, then the metal-PEX pipes are used in laying out open. Their quality and the advantage to keep the form in bending given the opportunity.

Metal pipes can withstand the constant pressure of 10 bar at 95 deg. Connect the pipe and screw-pressing.

In terms of meeting these conditions and should be considered material for expansion systems. The main materials used for the manufacture of expansion equipment are usually glass, metal and rubber. Are beginning to use plastic instead of glass (PEX tubing, PEX pipe) and ceramic materials (porcelain, magnesium silicate).
Glass

Glass is a water-insoluble silicate salts of silicic acid, which may include elements such as Na, Ca, Br, Pb, etc.
Glass compares favorably with other materials in their properties, of which the most important are:
a) transparency;
b) good Tacoally insulating properties;
c) a negligible vapor pressure;
d) ease of cleaning and removal of adsorbed gases;
e) the ability to easily accept and retain any desired shape.
Virtually glass is gastight, gives a strong and tight connection: glass – glass and glass – metal. The main brands of glass used in expansion technology: C-90-1, C-89-2, C-84-4, C-49-5, C-48-8, C-39-17 silica glass.
Metal

In order not to segregate the concrete mixture, its descent into the trench must meet the following requirements:
- The height of free drop of concrete mix into the trench must not exceed 3 m;
- Descent concrete from a height of 3 meters should be carried out on inclined chutes, troughs or in the tub with the help of lifting devices.

The use of ready-made parts of the concrete base, made at the construction yard or factory precast concrete, dramatically accelerates production work-flow. The inner radius of prefabricated concrete products units taken at 2-3 cm more than the outer radius of the PEX tubing should be laid. The connection of separate parts of running tab of reinforcement in the gaps and filled with cement mortar.
Standards: ASTM F876/F877, CSA B137.5, DIN 4726, NSF 14, SDR 9
Certifications: nsf-rfh, (Radiant Floor Heating), nsf-pw (Potable Water)
UPC Listed by IAPMO
Minimum bend. radius: 5″
Pressure rated 100psi @ 180F
Warrantied by the manufacturer.

Available in 300′, 500′, 600′, 900′, 1000′ and 1200′ lengths. Volume discounts on multiple roll purchases.

Compatible with the following connection systems:
1. Crimp Tool, Crimp Rings and Crimp Fittings.
2. Ratchet Clamp Tool, Stainless Steel Clamps (Cinch Clamps) and Crimp Fittings.
3. Press Tool, St. Steel Press Sleeves and Press Fittings.
4. SharkBite fittings.After laying the pipes and jointing gap between the body of the pipe and the walls of precast elements is filled with cement mortar. In PEX tubing laid in trenches on the pillow with a minimum thickness of 10 cm, which is satisfied from the local sand or soil gravelistogo. The thickness of sand bags should be such that the sockets or sleeves stacked tubes were not relied on the rocky ground.

When laying PEX tubing in the wet soils need artificial device base is defined not only by ground conditions, but the method of dewatering. In the open dewatering regardless of ground conditions have to hold a PEX tubing macadam base, which is in the ground, not in need of strengthening, has only technological purposes.

Control over the quality of work carried out after each stage (welding, insulation, installation, etc.). If you do not, then after each operation pipeline installation result of previous work becomes unavailable for testing.

For example, the imposition of the first layer of weld no longer gives the possibility to establish whether the joint assembly was made, whether installed the required clearance etc. But the imposition of bitumen isolation makes it impossible to check the quality of cleaning the pipe surface and as a primer.

Q: What is the recommended loop length for PEX tubing?
A: PEX tubing is generally installed in loop lengths ranging from 200ft to 250ft. It is not recommended to install this tubing size in lengths longer than 300ft, as it may reduce the delta T of the system and may increase it’s response time.
Therefore, the construction of PEX plumbing pipeline quality control should be carried out continuously and in stages in the process. All materials used for welding and assembly work must have certificates confirming their compliance with the requirements of ASTM.

Q: 1/2″ or PEX tubing – which is better suited for in-floor radiant heating?
A: 1/2″ size is by far the most popular for radiant floors, mainly due to the loop length allowances, pressure drop characteristics and nearly equal pricing. 3/8″ size, on the other hand, requires less floor elevation and is often used with pre-manufactured floor panels. Bottom line – the answer depends on the type of project, flooring space and other factors.

Reviewing the qualifications of welders shall be effected by welding test joints in conditions that are identical with the upcoming work. During the welding Welding checked, the order of suture and cleaning the slag between the layers of multilayer welding seams.

Waterproofing in the form of tape width of 50 cm wound on the PEX tubing in a spiral with overlapping seams by 1-2 cm should be borne by wrapping the PEX tubing tightly, without wrinkles, folds and bags.

Linens waterproofing should not have holes, tears, folds, bumps, etc. The ends of the rolls should be smooth. Waterproofing should be stored in a dry place, protected from rain and sun room on the plank floor or the floor.

Omissions insulating coating in the field seams that are welded in the trenches, must first be cleaned, primed and coated with an insulating layer overlapping an isolated part of the PEX tubing.

1) elliptical ends;
2) squareness of pipe ends;
3) variation in wall thickness of pipe ends in different places;
4) the angle of the bevel edge;
5) the value of blunting the edges;
6) lack of internal contamination.

Structural elements of cutting edges for welding

Structural elements of cutting edges for welding:

B – gap;
c – dullness;
B – angle of the bevel edge;
X – angle cutting edges;
1 – without cutting edges;
2-partitioned with edges of one part;
3 – V-shaped cutting;
4 – X-shaped cutting;
5 – V-shaped cutting

Before assembling the tubes are aligned in a thread centered and grab. When assembling the welded PEX tubing of the longitudinal joints should be offset against each other in a staggered manner so that when laying pipes in a trench all the longitudinal joints were located at the top of the PEX pipe and were available for inspection. In manual welding seam is the number of layers depending on the pipe wall thickness.

Brand: Everhot SKU #: APX1230 Availability: In Stock Usually ships: within 1 business day

Product Description: 300ft roll of 1/2″ PEX-AL-PEX Tubing for use in radiant heating applications. Meets/exceeds ASTM F1281, CSA B137.10 standards. Also certified for use in domestic water applications. UPC listed by IAPMO. Pressure rated at: 80psi @ 200F, 160psi @ 140F, 200psi @ 73F. Packing: Box. Applications: 1/2″ PEX-AL-PEX Tubing is commonly used for radiant heating applications projects such as concrete slabs (wire mesh or rebar reinforced), thin slabs (non-reinforced), below the subfloor heating (staple-up), sandwich type installations (between subfloor and finished floor) and many others. Typical loop length for 1/2″ PEX-AL-PEX varies from 250ft to 350ft, depending of the application, supply temperatures, flow rates, etc. 300ft is considered standard for typical concrete slab install. Compatibility: PEX-AL-PEX tubing can be installed using compression style PEX Fittings of Press type system (fittings, sleeves and tools).

The imposition of the first joint is made in two installments on the lateral parts of the PEX pipe. When applying the first layer welder brews first quarter of the two side in the direction of the arrows from the bottom up. After welding, the side-fourths of the entire section of its turn over by 180 ° and welded to the remaining two quarters of the joint. The imposition of the second layer on the remaining two quarters of a circle is made after the turn section at 90 °. Rounding out the weld after the turn section 180 °.

Upon application of each subsequent suture are encouraged to maintain the electrode in a direction opposite to which are welded to the previous layer. It is necessary to ensure that the boundaries of the welded seam areas of the individual layers do not coincide and overlapped by not less than 50 mm.

The depth of the well defined, depending on your depth of the pipe. The wells were constructed from prefabricated concrete elements, or of brick. The Well of the foundation blocks (Fig. 1) to erect steel or cast-iron plumbing pipeline with a diameter exceeding 100 mm.

PEX Plumbing system well
1 – sand or gravel bank filling;
2 – Adaptor;
3 – valve;
4 – Stand for the fire hydrant;

Foundation blocks laid on sand or gravel bank filling thickness of 100-550 mm. Reinforced concrete blocks set on cement mortar of M 50 with tab reinforcement for zamonolichivaniya angles. Mounting blocks lead to the installation of temporary fixtures. To descend into the pit ladder must be provided.

Outside of the foundation blocks cover the waterproofing layer of bitumen. Distance from floor to the bottom of the well pipe pledged should be about 40 cm minimum distance of overlap of the ground surface should be 46 cm or more.

This distance can be increased to planning marks when laying concrete rings 80 cm in diameter rings make it possible to form the neck of the well of any height. Reinforced concrete shaft ends with a cast iron manhole with a lid.

Round wells collected from standard concrete rings with a diameter of 100, 125, 150, see lower part of the well were made of round concrete elements, or of brick with holes for piping.

At the top of the well set a ring of conical shape, which serves as a transition from the lower cylindrical part of the upper cylindrical ring under the hatch with a diameter of 70 cm part of the well under the hatch is laid with bricks.

In PEX Plumbing system lines under roads paved hatches wells must rise above the level of the roadway no more than 2 cm, under nezamoschennymi passages – 5 cm, with the device blind area 1 m wide around the hatch.

From the outside well satisfied with earthen castle. To descend into the pit wall in laying the steel staples in a staggered manner at a distance of 35 cm vertically and horizontally between the axes of staples 30-35 cm
Stop

Weakest in the plumbing pipeline are Spigot and fittings that can not interfere with longitudinal pipes fix progress.

Emphasis:
1 – point-blank;
2 – layers of roofing and roofing;
3 – knee

To compensate for these efforts at the plumbing pipeline in the ground turns, branches and twigs at the ends of dead-end to construct the stop (Fig. 2). Sizes and designs stops is determined by calculation. Temporary PEX plumbing pipe system allow construction stops of wood.

Since it is not easy to lift or transport these pipes in single pieces, so they are obtainable in foot long sizes of 20 inches. This makes them easily transportable and usable during installation work or so. In addition to this, the PEX piping is available in different sizes such as 1”, ½”, ¼”, ¾” and 3/8”. So individuals can use these units according to their personal needs. Mostly, larger diameter sized tubing is used in commercial spaces while residential spaces are installed with units of lower diameter.

Besides having high resistance to temperature, these units possess great resistance to chemical attacks also. They do not react with air leading to corrosion and rusting. They do not even form scaling or chlorination of water being supplied through it thereby making it super clean. There are also fewer numbers of joints in PEX piping mechanism which makes chances of damages and leakages truly lessened up. It is also good for checking out of any kind of leakage in installation work.

So, without any doubt PEX piping are best for water plumbing systems.

These days PEX pipe are becoming the choice of people due to its toughness and great capacity to present optimally in high temperature conditions making them fit in varied applications. The main advantage of this pipe is to remain supple in freezing point. It can be stored in the spools and have very less weight than other pipes.

Installation

• First of all measure the pipe according to the requirement and cut it down. At the time of cutting keep in mind that it must not create burrs because it can lead to bad connection. Use good cutting tools to prevent burrs.
• Now apply the fittings over the pipe by sliding the crimp ring.
• Introduce the end of the fitting into the pipe such that the end of the pipe touches the fitting shoulder.
• Make the crimp ring to slide roughly from 1/8 to 1/4 end part of the pipe. Low range can cause weak connections and results in leakage.
• Use the crimping tool to construct the ring over the piping. Make the crimp to stick tightly to that place to prevent leakage.

The tools used helps in making tight sealed connections that are leak proof and permanent. These steps can make the installation of the PEX pipe simple and very easy.

* PEX Pipes Rehau standardized in accordance with DIN16892/93;
* Tube material Rehau meets DIN1988;
* The PEX tubes are formed Rehau domestic deposits;
* Light weight, ease of installation;
* High withstand loads: in case of accidents are possible short-term load of up to 110 ° C;
* High impact strength down to -50 ° C, providing plumbing Rehau at subzero temperatures without restriction;
* PEX Pipes Rehau not susceptible to scratches;
* Bent by mistake Rehau PEX pipe can be returned to its original state by heating (memory effect);
* Rehau PEX Pipe diameter 32 mm bend without the use of special tools;
* Resistant to abrasion;
* Neutral to virtually all chemical products;
* Quick and easy permanent connection pipes Rehau by cold pressing (without rubber sealing elements) can be laid in the screed and a plaster; details of connections are made from a modified brass resistant to leaching of zinc;
* Battery life systems – more than 50 years;
* Experience confirmed by hundreds of millions of meters of PEX pipes made from Rehau RAU-VPE (PE-Xa).

Other materials are less convenient for the installation and lower on the physical properties of peroxide cross-linked polyethylene PE-Xa. For example, polypropylene, more prone to form deposits on the inner surface. Bending and expanding tubes formed white crack, due to which there is loss of strength. In addition, polypropylene has a low toughness, in connection with which there is a danger to the fragile state of transition and fracture the pipe at a temperature below 0.

Polyethylene, crosslinked by silane method – PE-Xb has the lowest degree of matching of all cross-linked polyethylene – 65%. Stitching on the uneven thickness of the material: the outer and inner surfaces, it is greatest in the bulk material is very low. PE-Xb tighter compared with PE-Xa, which complicates installation. The shape memory effect is less pronounced, which makes pipe Rehau less resistant to mechanical stress.

In physically cross-linked polyethylene PE-Xc (obtained by irradiation hard X-rays) and low degree of cross-linking – 70% compared with PE-Xa (85%). Material PE-Xc vaguely described in the German construction standards (DVGW). Very hard material, which limits its scope.

Steel tubes compared to pipes Rehau PE-Xa have a much greater coefficient of roughness (0.2 mm, while the PE-Xa – 0,007 mm) and are subject to corrosion, which sharply reduces their life in the systems and water supply systems. Have a much larger thermal conductivity (67 W / m * K), which leads to significant losses during the transportation carrier. More complex and lengthy installation.

Copper pipes are subject to pitting corrosion, in addition, have the highest thermal conductivity (393 W / m * K) of all these materials, which leads to very large heat loss. Roughness coefficient – 0,015 mm, much lower than that of steel pipes, but still two times higher than that of polyethylene. Copper – one of the most expensive materials.

Thus, pipes made of polyethylene PE-Xa, produced with the help of a peroxide crosslinking, compare favorably with characteristics of pipes made of other materials and meet all modern requirements and standards and water supply systems.

• High strength makes possible the implementation of metal pipes piping water and heating with a high internal pressure.
• Thermal stability allows for the pipe for the installation of hot water and heating, including boiler rooms.
• Resistance to multiple, sudden changes in pressure and temperature.
• Absolute resistant to corrosion, high chemical resistance make it possible to use them for pumping corrosive liquids.

These pipes are not clogged, on their inner surface are not deposited any scale or corrosion products, brought coolant from other elements of the system. Consequently, the hydraulic characteristics of the pipes does not change throughout life.
* The low roughness of the inner surface – 10 times lower than that of copper (brass), pipelines, and more than 20 times lower than that of steel. This property allows the use of pipes of smaller diameter, which makes the system compact and neinertnymi, use pumps of lower power and completely abandon the rules set in the project section of the pipeline is three times larger than necessary, so that after 10 years as a result of coking pipe flow area was nominal. But this causes an increase in load on the pumping equipment, high operating costs, high capacity system.
* Extreme flexibility allows repeatedly to reduce the number of connections, respectively, to reduce the hydraulic resistance, improve system reliability and speed installation, reduce the cost of material and the whole system. Approachable metal-tube allows to make the tribe with a very small bend radius, and the sections where the bending remains constant.
* Persistently maintaining shape during bending.
* Lack of internal stresses and, consequently, increased service life.
* Low coefficient of linear expansion (as in copper) can do without additional compensators.
* One hundred percent oxygen and water resistance. Aluminum pipe layer does not transmit oxygen and thus prevents the occurrence of corrosion within the systems of heating (boilers, radiators, boilers, etc.).
* Electrical. Special design allows fitting to interrupt electrical contact and prevent premature failure of the system due to exposure to electric fields.
* Non-conductivity of noise and vibration – a property particularly important for residential premises. The outer and inner layers of polyethylene pipe reduce noise levels, which are usually very well transmitted and reinforced with metal pipes.
* Compact and lightweight packaging make it easy to transport metal pipes and reduce transportation and storage costs to a minimum. Bay of pipes with a diameter of 16 mm length of 200 meters weighs only 25 kg (200 m copper pipe weighs 80 kg).
* The service life under specified operating conditions is at least 50 years.
* It is absolutely environmentally friendly material. PEX pipe have no contraindications for use in installations of all types: from pipelines for drinking water pipelines to fuel.
* Due to the fact that the outer layer of the pipe is crosslinked polyethylene, there is no need to protect the pipe from the outside against corrosion, and paint it.

On the basis of metal pipes can implement any scheme of spreading room:

* Distribution;
* Pipe;
* Floor heating;
* Baseboard wiring;
* Traditional routing of pipelines (similar to steel structures).

The pipe is designed to provide hidden and open spreading room. Possible pipe laying in the wall canals, mines, sex, concreting, pipe in pipe “, as well as direct concreting. But the main feature of metal pipe that is – the ideal material for floor heating systems – the most promising form of heating. In this regard it is important to note that the pipes are supplied in coils of 200 m, which allows you to put them in the floor without a single interface.

PN 10 – for cold water (up to +20 ° C) and heated floors (up to +45 ° C), the nominal operating pressure of 1 MPa (10.197 kg / cm);

PN 16 – for hot and cold water (up to +60 ° C), the nominal operating pressure of 1,6 MPa (16.32 kgf/cm2);

PN 20 for hot water (temperature up to +95 ° C), nominal pressure of 2 MPa (20.394 kgf/cm2);

PN 25 (reinforced) for hot water and central heating (up to +95 ° C), nominal pressure of 2,5 MPa (25.49 kg / cm).

In addition, the fasteners are manufactured from PEX. Combined parts, having in the design nickel-plated brass extrusion box with an external or internal thread, make it easy to switch from PEX to the metal. They are equally suitable for pipes of any number of pressure.

Benefits

Reliability and durability of pipeline systems is directly dependent on the quality and properties of the source material. The invention of PEX mark “Random copolymer” RRRS was the culmination of unique research. It managed to combine a number of valuable properties, which makes this material ideal for creating high-pressure water systems and heating systems.

Many years of service

On the surface, having direct contact with water, does not form deposits and corrosion. The inner diameter of the pipes does not diminish with time.

Maintaining water purity

The material is absolutely non-toxic and chemically resistant (inert), and therefore does not affect the quality of transported water.

Resistance to changing conditions

PEX mark “Random copolymer” RRRS withstand changes in temperature and pressure in a wide daipazone.

Low thermal conductivity

In the working mode (the flow of water) on the surface of the pipeline does not form condensate.

Ability to dampen noise and vibration

PEX pipes and fittings have good sound absorption, and therefore limited to the transfer of noise arising during the flow of water through the pipes and fittings, which are many times reduced in comparison with metal, the sound transmission

Saving of time

Installation of PEX mark “Random copolymer” RRVS requires minimal skills, time and effort. Socket welding technology allows only a few seconds to ensure the longevity tight connection.

Savings

Unique price / performance ratio is achieved due to low cost raw materials and technological simplicity of installation. In addition, the durability of PEX pipe favorably with metal.

Unpretentiousness of Service

Reinforced PEX does not require painting, as they have an even color across the surface of the material (do not change it). Besides, there is no need to pre-training of pipes and fittings.

And once again saving

PEX pipes and fittings in the 9 (!) Times lighter than metal, therefore, significantly reduces transport and storage costs and complexity of installation, which correspondingly reduces the time and cost of installation.

Assembly

PEX pipelines suitable for all known types of seals: open brickwork, laying under plaster, in mines and channels, etc. Installation of pipelines from the “Random copolymer” (RRRS) should be performed at an ambient temperature not lower than -10 ° C. Connection of PEX parts made with the help of special equipment by heat welding into the socket.

To start with, the PEX pipes are highly resistant to extreme temperatures. This is also the same to the copper pipes but it can easily break when exposed to extreme ones. This is because the expansion and contraction ability of the copper pipes is not acceptable and can easily break during freezing. The PEX pipes on the other hand, cannot break. This is due to their high flexibility which enables them to withstand different temperatures by stretching instead of expansion which weakens the copper pipes.

Among the benefits of the PEX pipes is their high resistance to corrosion. Copper is a metal and like all other metals, they corrode. However, its corrosion percentage is low and highly resistant. Copper pipes only corrode when exposed to high levels of water pH of either too acidic or basic. This leads to their corrosion which leads to metallic taste in the water and subsequently wearing off. PEX pipes on the other hand are not made of metal; it is made of cross-linked polythene pipes. It is therefore highly resistant to corrosion.

Cost effectiveness of the PEX pipes is another benefit that exceeds the copper pipes. Other than its low purchase price, the PEX pipes’ installation is cheaper as it requires fewer fittings and less energy to position. This can save a lot and have more money left for other uses. Copper pipes are expensive starting from their buying price to their installation as they are inflexible hence require more fittings to customize.

Another benefit of the PEX pipes is their ability to be used with other pipes. This makes them essential by giving them a variety of uses. They can easily be used with metal and PVC pipes either for extension of between them as loop to allow their expansion.

Finally, the PEX pipes are more reliable. This is because they need fewer fittings which the more they are the higher the chances of leaking. They can easily be bent round corners unlike the copper pipes which need more fittings to achieve this.

Collector of floor heating systems are supplied with metering and thermostatic valves that allow adjust coolant temperature.

As a floor heating system can be used and an electric floor heating. Electric floor heating expedient to do when you can not connect to the main heating system, for example, such a situation is possible when you create a floor heating system in an apartment or office, as well as small areas in homes and cottages.

Electric “warm floor” on one of the sites PEX Universe

Example of installation of electrical “warm floor” on one of the sites PEX Universe

In country houses, cottages and other objects, in which there is an individual boiler, our company recommends that only the creation of systems of water “warm floor”.

1. Polyethylene pipes
2. PVC pipes, steel and iron

Connection pressure polyethylene pipes without welding is possible in two ranges of diameters: small (20-110mm) and medium (63-315mm). The range of large diameters is clearly uneconomical for connection without welding, but in terms of durability and reliability – even dangerous.

For pressure pipes of rigid materials (PVC, steel, iron) of dimension greater range of mechanical connections, covers the small and medium-sized (40-300mm), and part of the large-diameter (350-600mm).

In this case of welding of polyethylene is not, however, find it necessary to offer you reliable solutions that are in some cases exceptional advantages when connecting pipes without welding metal.

Proposed solutions

As the title suggests, only a general overview, we give a short description of possible solutions.
PEX pipe solutions for small and medium diameters

Nevertheless, there are many reasons, when the fusion has to be abandoned. In this paper we consider the main causes of non-welded joints, as well as offer their own solutions to the issue. Please note, we will focus on high-pressure pipelines external networks of polyethylene, PVC, iron and steel.

Plan article:

1. Reasons for non-welding
2. Types of the pipe
3. Proposed solutions

Reasons for non-welding Insulating PEX Pipe for Plumbing Applications

First determine what grounds the decision in favor of the mechanical connection of pipes. Typically, three factors are decisive:

* Price issue
* Difficult conditions
* Limited time

The price of the issue implies a high price for the services of welding, for example, in connection with a small amount of work. Suppose you need to implement one or more joints of polyethylene pipes of small diameter. Challenge teams of welders would cost more than the cost of devices of these compounds (sometimes several times), not to mention the cost of the equipment.

Difficult conditions often preclude the use of welding. Very limited space, constant intense influx of water when the tube is fully or partially submerged in water, even the remoteness of the place of work on urban infrastructure – these and many other cases, the performance of welded joints is a challenge or impossible.

The third example is found in the life of the operational service. In this example, you can combine all three factors in one – an accident on the pipeline. Time of the accident can not be predicted at this case in stock usually has a repair kit. But what about when it comes to plastic pipe, and its own team of welders and related equipment is not available?

To address these questions we turn to the third part of the article, and now dwell on the description of the types of pipes, which in principle applies mechanical means of connecting pressure pipes.

The average diameter pressure pipelines made of polyethylene (63-315mm) require a high degree of reliability of the connection. When it comes to top line of the size of the average range and technically possible to perform welding of polyethylene (in most cases have this opportunity), we strongly recommend to do it.

When this is not possible (this also happens), we propose to use the repair and fittings Viking Johnson for polyethylene pipe (series AquaFast).

* Solutions for pressure pipes made of PVC, iron and steel

Pressure piping from rigid materials are characterized by complex connections in the case of different diameters, different materials of pipes and especially in their misalignment during connection.

For the range of diameters 40-600mm is ideal for repairing and connecting fittings Viking Johnson series MaxiFit, which was originally developed for shipbuilding. With its high reliability and wide range of applications, it has a number of exceptional benefits to welded joints. These benefits and other technical details of products we consider later in the article on the fixture Viking Johnson.

According and producers and sellers, prices for PEX tubing in the Seattle market is rather stable. PEX tubing are now cheaper than analog and galvanized steel tubing, including copper. The consumers of PEX tubing are almost all regions of Seattle.
Regulations at the federal level governing the design of tubingline systems engineering equipment, allow the use of PEX tubing, along with tubing made of other materials, and some of them give preference PEX tubing (eg, SNIP 2.04.01-85 * Internal plumbing and plumbingage of buildings “) . Several sets of regulations (federal level) for the design and construction aimed at improving the quality of projects and installations of tubingline systems from polymeric materials. Among them are: SP 40-101-96, SP 40-102-2000; SP 41-102-98, SP 40-103-98.
Despite the huge demand for PEX tubing in Seattle and the presence of authorizing legislation and regulations, the extent of this production is still far from desired. Nevertheless, the case headway. Especially noticeable increase in the proportion of PEX tubing in the private and commercial construction.

1. crosslinked polyethylene (REX or PE – RT) or polypropylene;
2. adhesive layer for a tight connection of plastic and metal;
3. overlapped or butt welded aluminum pipe;
4. gum;
5. crosslinked polyethylene, crosslinked polyethylene (REX or PE-RT) or polypropylene;

One of the advantages of metal pipes – the ability to maintain shape after bending, which allows their use in the open strip (PEX pipes installed just hidden). Apart from these, the main characteristics of metal pipes are as follows:
ability to withstand constant pressure (the pressure of 10 bar at 95 ° C);
physiological suitability for drinking water and food;

- 100% I impenetrability gases;
- Slight thermal expansion;
- Lack of structural changes and deterioration;
- Two types of pipe joints – pressing and Mapesil;
- Diameters of 16, 18, 20, 25, 26, 32, 40 and 50, 63, 75, 110 mm (in the system UNIPIPE).

The multilayer structure of metal pipes is a new word in the technique of montage. If their use does not have to think whether to use metal or plastic, because they use a combination of these materials. Supplied in coils or portions of various sizes virtually eliminates the need to cut pipes, but an exception of welding, threading or soldering faster and cheaper installation.

The only drawback of copper wiring
is its cost – it is about 2.5 times the price
wiring of heating on polypropylene. However, if you build a house not
for sale, but for myself, it is worth once again to weigh whether to save
on the life of the system. In any case, none of our customers
have not regretted that fire, water and copper pipes come together in his service.

Followed by a copper pipe is polypropylene.
On the cut, she strongly resembles metal, but differs
way to connect and thickness. Polypropylene is connected with
machine that heats the PEX to a temperature
melting, and thus the fitting is welded to the pipe. If cut
Such a connection across, then the weld is not visible – Pipes
and fitting literally mixed together. Such a connection is
very reliable. Deficiencies of polypropylene in comparison with copper: a large
thickness of pipes and fittings, a large exposure to temperature deformation,
high degree of aging at high temperatures (over the years, pipelines
become more fragile, like a long lain in the ground PEX
package).

By Research Institute of Plumbers guaranteed
life of the heating system of polypropylene is 15 … 30
years.

Nevertheless, despite these shortcomings, polypropylene
on the reliability of installed systems firmly holds second place in
range of materials for heating systems.

Pipe XLPE
(PEX, or “pipe shape memory”) differs from polypropylene only
more flexibility and the way to connect. Such pipes extend special
apparatus, are inserted into the fitting, then the apparatus is removed,
and the pipe is securely compress fitting. The main disadvantages of such pipe
- Limited lifetime at high temperatures (like polypropylene)
and very high flexibility. Beautiful outdoor wiring to make such
tube is almost impossible – it has to hide in the walls.

The penultimate place among the materials
heating is repoussage. Metal PEX pipe
so popular even 5 years ago, is now gradually losing its appeal.
This is because, firstly, on the market a huge number of
Low-quality metal-pipe, and secondly, leaking,
which are formed at the junction of metal pipe after 2-3 years
exploitation.

The main danger
the use of metal pipes hidden in the following. This pipe
a layer cake: the inner layer – XLPE
further layer of glue, then a layer of aluminum, re-glue, and finally
The outer layer of polyethylene or other material. All listed
layers superimposed on top brass fittings. When using a pipe
for example, in the heating system, it is heated by the flowing coolant.
The coefficient of thermal linear expansion of polyethylene own, have glue
your have your aluminum, the outer coating pipes own, and in fitting
as his own. Multiple-temperature deformation of so many
mutually contacting materials causes a weakening of the pipe in the
its weak spot – where the mounted fitting.

Imagine
that in a year in your home decorated in a room on the radiator, bandaged
for metal-PEX, and began to dig fitting. Most likely, you take
key and tighten the nut on the fitting to eliminate leakage. After some
time – a month or a year, a drop reappears, and you re-tighten
fitting. After a while the nut is tightened to such an extent
that prozhmet through a layer of aluminum metal-tube, and
the slightest effort on the fitting will be enough to pipe broke off.

And to address such an accident, you already need
hollowing of the decorated wall or floor not less than 0,5 m pipe
for its extension, for which the need to install another fitting
which, incidentally, according to the norms of working with copper pipe Murowana
in concrete is not recommended.

Also described the main negative features
Metal systems are still two shortcomings. First,
it is always narrowed flow passage fittings (looking at any
strotelnom market inside any fittings for metal pipes,
You’ll notice that the throat of the fitting are much smaller than the diameter
pipes, for which it was intended). Secondly, the cost of quality
fittings for metal pipes are always very high, in large
as nullifying the low cost of the pipe.

Conclusion: Aluminum
pipe can be sufficiently high degree of reliability apply only
when produced from its pipeline operates at a
the same temperature, which in practice is rare. Based
on our experience and that of our colleagues, let us formulate these
above disadvantages of metal-we in the last 4 years have ceased to offer
these pipes to our customers. <br>
Of course, if you insist, we
certainly mount for you even heating, even heated floors, even
any other system of metal pipes. Moreover, we will
system mounted on its normal 1 year guarantee. However, we always
consider their duty to warn every one of our customers from the outlined
ills, often the case with others.

Completes our list of steel
pipe. Its main drawbacks – external and internal corrosion, high
internal resistance, and high complexity of installation and repair.
There is however one case where the steel pipe is still out
competition. This gravitational heating system. Rarely, but still
find homes in areas where long (2 … 4 days)
cut off electricity. One solution for heating in this situation
is to install with automatic small autonomous
generator, the other – to set the volatile boiler and gravitational
heating. This system, which does not require a pump. Such
system in the last century were mounted in almost all the village houses.
They are rejected not in vain – their efficiency by 30% below current systems
and, therefore, 30% higher fuel consumption, the pipe must be used
large diameters, and install them and radiators with slopes (which spoils
design). And there are many other shortcomings.

However, if the owner insists it is on such
gravitational heating system, the cost of pipes for it to be
highest position in the estimates. That is why such systems are mounted
remains exclusively from steel pipes.

If you are building
house for himself and the heating system it will be pressurized (with pump)
then certainly the most reliable system is obtained from copper pipes.
PEX has the meaning applied to infrequently visited country houses
and houses, standing up for sale. The difference in cost of materials between
copper and PEX distributing heating will be in a holiday home
about 800 €, in a country house of the middle class (two or three heated
level) about 1500 €, in the house of luxury 2500 € (cost of installation
Works on the type of material does not depend on).
Other materials, in our opinion,
not allow simultaneous combined into a reliable, elegant
visible parts assembly and small losses on the internal resistance.