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Full analysis of ball valve sealing surface selection: how to accurately select according to conditions

2024-09-30

Full analysis of ball valve sealing surface selection: how to accurately select according to conditions

The selection of the ball valve sealing surface involves multiple factors, including the type of medium, working conditions, operating temperature, surrounding environment and the performance requirements of the sealing surface. The following is a detailed analysis of the selection of ball valve sealing surface:

Evaluation of valve performance

2024-09-30

Evaluation of valve performance

Check content: whether the appearance of the valve is defective, such as cracks, bubbles, dents, etc.; check whether the logo, nameplate and surface treatment meet the requirements. Standards: International standards include API 598, ASME B16.34, ISO 5208, etc.; Chinese standards include GB/T 12224 (general requirements for steel valves), GB/T 12237 (steel ball valves for petroleum, petrochemical and related industries), etc.

Silent check valve: fluid guardian, silent is more reassuring

2024-09-30

Silent check valve: fluid guardian, silent is more reassuring

Silent check valve is a valve that automatically opens and closes the disc by the flow of the medium itself to prevent the backflow of the medium, also known as reverse check valve, one-way valve, reverse flow valve, and back pressure valve. Its main characteristics and advantages are as follows:

Analysis of the whole process of valve maintenance: key steps to restore safety and efficiency

2024-09-30

Analysis of the whole process of valve maintenance: key steps to restore safety and efficiency

The general procedure of valve maintenance is a systematic and meticulous process to ensure that the valve can return to normal operation and meet the requirements of safety and reliability. The following are the general procedures for valve maintenance according to multiple sources:

Butterfly check valve: guarding pipeline safety, intelligent anti-backflow expert

2024-09-30

Butterfly check valve: guarding pipeline safety, intelligent anti-backflow expert

Butterfly check valve, also known as butterfly check valve and double-dip check valve, is a valve that automatically opens and closes the disc by relying on the flow of the medium itself. It also has aliases such as check valve, one-way valve, backflow valve, back pressure valve, etc. The working principle of the butterfly check valve is relatively simple. When the medium flows in a normal direction, the medium pressure pushes the valve disc to open, so that the medium passes smoothly; when the medium flows backwards, the disc automatically closes under the action of medium pressure and self-weight, cutting off the flow of the medium, so as to prevent the backflow of the medium.

The working principle and correct installation method of Y-type filter

2024-09-30

The working principle and correct installation method of Y-type filter

Y-type filter is an indispensable filtration device in the pipeline system for transporting fluid media. Y-type filters are usually installed in pressure reducing valves, pressure relief valves, shut-off valves (such as the water inlet end of the indoor heating pipeline) or the inlet end of other equipment, which is used to remove impurities in the medium to protect the normal use of valves and equipment. The structure of the Y-type filter is advanced, with low resistance and convenient sewage discharge.

 
 
 
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