JiangShan

ppr water pipe purchase tips:

1, “touch” : whether the texture is delicate, whether the particle is uniform. Now on the market, the ppr tube mainly has several colors: white, gray and green. In general, recycled plastic cannot be white, so many people often think that white is the best, in fact, this view is one-sided. With the improvement of technology, color is not the standard to distinguish between good and bad ppr tubes. Tube is good or bad, look is not able to solve the problem, touch, coarse particles are likely to be mixed with other impurities.

2, “smell” : there is no smell. The main material of ppr pipe is polypropylene. Good pipe has no smell, and bad pipe has a strange taste. It is likely to be mixed with polyethylene, rather than polypropylene.

3, “pinch” : ppr tube has considerable hardness, casually can pinch into deformation of the tube, certainly not ppr tube.

4, “hit” : good ppr tube, “resilience” is good, too easy to smash nature is not a good ppr tube. But hardness is not equal to good elasticity, how can not break the ppr tube, we will leave questions. Because some illegal manufacturers by adding too much calcium carbonate and other impurities to improve the hardness of the pipe, such pipe for a long time is prone to brittle crack.

5, “burn” : ignition, very intuitive and very useful. ppr tubes mixed with recycled plastic and other impurities can smoke black and have a pungent smell; Good material after burning not only will not take black smoke, no smell, after burning, the liquid is still very clean.

ppr water pipe purchase error:

  1. Color of ppr water pipe

Many people will mistake the color of the ppr water pipe white is the best, this is a very wrong misunderstanding. Now the color of the ppr water pipe produced by different manufacturers is different, such as Yatong’s Five Star home improvement pipe is blue, and Weissing’s ppr pipe is green. Different colors of PPRS use the same base material, but the production according to the customer’s preferences or habits to add different master color, so the difference in color does not represent the quality.

2, the difference between PPR hot and cold water pipes

Not all ppr pipes are for hot and cold use. There are special for cold water pipe, also for hot cold water pipe, be sure to explain their requirements when buying. Of course, the raw materials used in PPR hot and cold water pipes are exactly the same. Hot and cold water pipes are divided into different specifications according to the temperature of the water that can be transported when in use. Due to the higher requirements for conveying hot water to the pipe, the wall thickness of the hot water pipe with the same nominal pressure (PN) is thicker than that of the cold water pipe. For convenience, hot water pipes have red co-extruded strips, cold water pipes do not.

  1. Do ppr pipes and accessories need to be from the same manufacturer

Many times we may think that it is okay if the pipe and fittings are not from the same manufacturer. As long as the specs are right, this is actually wrong. Different manufacturers will use some different raw materials, the production process is also different. Reliability is not guaranteed when connecting, so this is generally not recommended. We try to choose the same brand when choosing ppr pipe and accessories.

4, the selection of ppr water pipe pressure

The first thing to consider and determine in the selection of ppr water pipe is nominal pressure. Then select the ppr pipe size you need under the pressure conditions you need. PN in the pipe spray code represents nominal pressure, and the unit is MPa. The wall thickness of pipes with different nominal pressures is different. When selecting pipes, ensure that the nominal pressure of pipes is not lower than that of tap water.

5, ppr water pipe pressure test

The pressure test of ppr water pipe should be careful. Choose from brands of ppr water pipes. Installation and pressure test will be included. Be on site for the pressure test. Pay attention to the contents: fill the pipeline with water, completely drain the air in the pipeline, use the pressure pump to increase the pressure to the test pressure, every 10 minutes to re-pressure to the test pressure, repeat twice. Record the pressure 10min and 40min after the last pump pressure, and the pressure difference shall not be about 0.06MPa. 2 hours after the end, the pressure drop should not exceed 0.02MPa.

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