PEX pipe & PEX Plumbing Reviews » plastic pipes

Drain polypropylene pipe

admin — Mon, 02 Aug 2010 20:47:03 +0000

In the online shop sells polypropylene pipes and fittings with diameters of 50 and 110 mm for the sewerage systems of buildings. Pipes and fittings at one end smooth and the other have funnel with a rubber O-ring. When installing sewage systems smooth the end of one tube (fittings) is inserted into the socket and the other is sealed with a rubber ring. Ring – lobe, so the installation and dismantling of connections require much less effort than with a ring of circular cross section.

In the process of mounting a smooth butt end of a pipe a few not brought all the way to funnel the other, so that a gap is formed between them, which compensates for the linear extension of the pipeline, resulting in transportation via pipeline of hot water. Required number of such compounds at each site is determined by calculation.

The smooth inner surface of polypropylene tubes, first, reduces the likelihood of them dirty, and secondly – can run them with fewer, than in the case of cast iron sewer pipes, slopes.

P. 17.9 SNIP 2.04.01-85 * “Domestic water supply and sewerage of buildings” regulates the use of plastic pipes in sewage systems, including in terms of fire protection requirements.

In the sewerage systems of buildings polypropylene pipes and fittings are recommended for transporting waste liquids with constant flows of 80 ° C, while the polyethylene and polyvinyl chloride – a temperature of 60 ° C. 4.1.1 SP 40-102-2000 (domestic sewage systems of buildings should be mounted out of sewer pipes, designed for transportation of waste water at a constant temperature above 75 ° C) makes polypropylene tubes in preference to pipes of other materials.

Pipes for sewage systems are manufactured according to specifications ASTM 4926-005-41989945-97 “Tubes and pipes of polypropylene for drainage, fittings, in accordance with ASTM 4926-010-419899-45″ Parts molded from polypropylene for sewage pipe ” . All products have certificates of conformity.

UV rays protect for PEX and PVC plastic pipe

admin — Mon, 21 Jun 2010 17:55:59 +0000

But despite these arguments, our century is called the century of PEX pipe. Plastic does not rust, at the price they simply are PEX Canada, and do not require special insulation (and steel and copper pipes should be insulated to prevent heat loss). They are durable and plastic. Lightweight and easy installation allows you to create the plumbing system in the shortest possible time, without using large quantities of equipment and special equipment. But there are drawbacks, too – when radiant heating PEX tubing strength decreases. They hardly endure the impact of high temperatures, like all PVC under the influence of UV rays become brittle and disintegrate. Technologists are working to eliminate these deficiencies and strengthen the dignity of plastic pipes. It is already clear that the products of the metals is not fully meet the needs of our time, and replacing them with pipes made of plastic – a matter of time. To complete the transition to the plastic you want to create polymers that are resistant to temperature and UV radiation.

Types of plastic pipes

admin — Tue, 20 Apr 2010 18:56:21 +0000

1. Polybutylene pipes. Compared with other polymers polybutylene more elastic and thermal conductivity, can withstand temperatures up to 90oS transported fluid, in connection with what is used for mounting “warm floor.” It is easy curling, transported to the bays. Connection welding.

2. Tubes made of polyethylene. Durable. Stretch. A good insulator. Distinguish polyethylene of high and low density. High density polyethylene is stronger, but less elastic. Suitable for cold water. Ideal for installation of water gardening, because, due to its flexibility, tolerates freezing water without damage to the pipeline. Connection welding. In Europe, most used the PEX plumbing tubing from the so-called “cross-linked” polyethylene (PEX). Suitable for hot and cold water and heating. Connection disassembled fittings and crimping.

3. Pipes made of polyvinyl chloride (PVC). Of all the polymers more rigid. Resistant to ultraviolet rays, aggressive chemical compounds. Small proportion. Low flammability. The bad news – the presence of chlorine in the compound. Connected by gluing.

4. Pipes made of polypropylene. Depending on the label used for hot and cold water, heating and sanitation. Physico-chemical and thermal properties of polypropylenes are close to the sewn polyethylene, but unlike the latter is cheaper and easier to install. Connection welding.

Thus, for the American “average” consumer who wants to do self-assembly, and to focus on price / quality ratio, the most appropriate choice – a tube of polypropylene or polyvinyl chloride.