Plastic sub-catchment and the valve device works in the application of warm (a)

Sub-catchment of plastic raw materials for the overall product requirements, design requirements, performance requirements, matching plastic valves and plastic filter test method requirements and the use of pressure and temperature, etc. that can find sub-catchment of the plastic device and sealed with a plastic valve test, torque test and fatigue test of basic quality control requirements, in order to facilitate sub-catchment of plastic valves and plastic device to determine the quality of selection and procurement.



Keywords: plastic valve plastic sub-catchment seal test device fatigue test



Warming in the rapid development of industry, the low-temperature floor radiation heating of the pipeline and the overall quality of support system also appears to require more and more important. With the low-temperature floor heating system in radiation applications, the proportion of construction work and continuous improvement, a variety of systems sub-catchment of the copper, and stainless steel sub-catchment, and plastic sub-catchment, and temperature control devices, a variety of materials valves, filters, and tube connector into engineering applications one after another, if not give the user control and bring the entire industry is adversely affected. The following sub-catchment devices on plastic and plastic valves to briefly outline the technical requirements.



Sub-catchment as a result of plastic valves and plastic device has a light weight, corrosion-resistant, non-absorption scale, can be integrated with the plastic pipe connected to a long life, production and installation of high efficiency not stolen after the loss of the advantages of plastic sub-catchment devices with plastic valves in the low-temperature floor radiation heating system, its advantages in the use of other materials or products are not mentioned in the same breath. At present, the domestic sub-catchment of the plastic device with the plastic valve in the production and application, there is no corresponding national or industry standards of their control, resulting in uneven product quality. With the rising price of copper, plastic and plastic sub-catchment devices such as valves and the rise of products has gradually expanded its market share. In order to protect the interests of consumers and to warm the healthy development of the industry, China's sub-catchment devices plastic valves and plastic is to declare national standards-making process.



The international community for the plastic to warm sub-catchment's varieties are mainly polypropylene, glass fiber reinforced material such as nylon 66 products. There are no plastic water's international standards, but the sub-catchment of the plastic unit supporting the valve need to be consistent with international standards.



International main types of plastic valves are ball valves, butterfly valve, check valve, valve, gate valve and shut-off valves, etc. There are two main structural forms pass, links and multi-valve, the main raw materials are ABS, PVC -U, PVC-C, PB, PE, PP and PVDF, etc.. Used to warm the main varieties of plastic ball valve and plastic valve.



Valve in the plastic products to international standards, the first valve is used in the production of raw materials to carry out the requirements of the manufacturer of its raw materials must be consistent with the plastic pipe product standard curve of creep damage; At the same time, the sealed plastic valve testing, valve body test, the overall long-term performance of the valve test, fatigue test and operation of the torque requirements are carried out, given the design life of plastic valves for 25 years.



Plastic filter materials to meet the same pieces of plastic pipe to meet the technical requirements and sub-catchment of the use of system requirements.



1. Plastic sub-catchment, and plastic valves and plastic filter products, the technical requirements



Raw material requirements of 1.1



Products in line with the selection of materials should be selected GB/T18252-2000 "plastic pipe systems extrapolation of thermoplastic pipe hydrostatic strength of long-term determination" requirement. ball valve Trunnion Mounted Ball Valve Floating Ball Valve Top Entry Ball Valve Three way ball valve V Type Ball Valve
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