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Introduction of plastic valve types

Release Date: August 19, 2017

The types of plastic valves in the world are mainly ball valves, butterfly valves, check valves, diaphragm valves and globe valves, etc. The structural forms are mainly two-way, three-way and multi-way valves . The raw materials are mainly ABS, PVC-U, PVC-C, PB, PE, PP and PVDF.

In the international standard of plastic valve products, the first requirement is for the raw materials used to produce the valve. The manufacturer of the raw material must have a creep failure curve that conforms to the standards for plastic pipe products. At the same time, the seal test, valve body test, and overall test The valve's long-term performance test, fatigue strength test, and operating torque are all specified, and the design service life of the plastic valve used for industrial transportation of fluid is 25 years.

Relationship between using pressure and temperature:

With the increase of operating temperature, the service life of plastic valves should be shortened. In order to maintain the same service life, the operating pressure needs to be reduced.