How to Install a PP-R Fittings

June 9, 2022 Off By Jim Boyd

What is a PP-R Fitting? 

There are many different and various equipment we use in our daily lives, whether in our own households or in public areas. There are specific equipment and materials that are designed and customed to carry out the functions necessary. Now, down to one of the common questions, what is a  pp-r fittings? PP-R fitting is a short form for Polypropylene Random. It has the qualities of high impact strength and good wearing and chemical resistance while being light in weight. Since PP-R is appropriate to be in usage with temperatures up to 90ºC, it is generally used in industrial processing that involves the application of cold and hot water, heating, and air conditioning. 

pp-r fittings

Ways to install PP-R Pipes and Fittings in the Household.

PP-R pipes and fittings in households are common to be set up by the experts. However, that does not mean that we can’t learn about the ways to install them in the household. Below are the steps to take when installing PP-R pipes and fittings. 

First and foremost, prepare the PP-R pipes and fittings necessary before the installation. For this step, prepare the tools such as a splicer, scissors, marker, ruler, and clean wool cloth. Make sure that the melter has reliable grounding measures, installation of welded joints and inspection of correct specifications, and strong and reliable connections before electrification; and check that the specifications of the size of pipes and fittings meet the requirements. Remember that underground application is not recommended and wall-embedded or ceiling-embedded undercover for general household installation is instead recommended. 

Second, you need to clean the fusion surface of the PP-R pipe fittings with water. Make sure to clean the fusion surface of PP-R pipe materials and interface surfaces so that there are no stains. 2-3 cm of the PP-R pipe ports should be removed in general, and 4-5 cm in case of slight cracks.

The third is the deep drawing of the fusion joint of the household water pipe. Before welding, it is important to draw a circumferential line along the longitudinal length of the pipe, not less than the minimum socket depth L2 on the surface of the pipe. The fourth step is the installation of pipe welding heating. For this step, you need to push the key PP-R pipe into the weld die sleeve and core at a uniform speed and push the pipe to the marked line, and make sure that the depth of the key advance to the end face of the socket and the end face of the die core. Confirm that the phenomena of not rotating and tilting in the course of impulse, and set the heating time according to the regulations. 

pp-r fittings

The fifth step is to dick the insertion and make adjustments. The butt insertion speed should be quick, to prevent any premature hardening of the surface of household pipes. The angle adjustment of butt insertion must be completed within the prescribed adjustment time. Remember that rotational motion between pipes and fittings is not allowed during butt insertion. The second last step is shaping and cooling the domestic pipes. After the allocated adjustment time, let the pipe and fittings are to remain static, and prevent further movements. The cooling should go a natural way, by prohibiting the usage of water or other force cooling methods. 

The final step is the pressure testing of pipeline installation. After the installation of the pipeline, it is compulsory to adjust the prescribed time at room temperature for testing. The exhaust outlet should be installed at the highest point of the pipeline when the pressure test fills water. The pressure test can be carried out only when the gas in the pipeline has been completely released.