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28

2019-09

【Technical article】 Causes and solutions of valve sealing surface leakage

Valve is the fluid system used most of a control component, can be used for switching or control flow direction and regulation, and from the simplest cut off function, the valve seal in the machine...
21

2019-09

【Technical article】 Causes of valve leakage

The most common reason is that the operation manager does not maintain the valve in consideration of relatively expensive maintenance costs, or the lack of scientific valve management and ...
10

2019-08

【Technical article】 Pneumatic valve accessories collocation function and principle

Pneumatic valve is a kind of compressed air to drive the operation of the valve actuator, its opening and closing speed is relatively fast, often used for fast two cut off use, can also be used to regulate the flow of use...
20

2019-07

【Technical article】 How do check valves handle pressure testing

Check valve is to rely on medium oneself activity and open actively, close valve disc, used to avoid medium backflow valve, also known as backflow valve, one-way valve, countercurrent valve, and ...
22

2019-06

【Technical article】 Comparison table of the relationship between valve size and medium velocity

It is well known that the flow rate and velocity of the valve mainly depends on the size of the valve, but also with the valve structure type of the resistance to the medium...
02

2019-03

【Technical article】 In 2025, the global valve market is expected to reach $69982.43 million

Valve is the control component in the fluid conveying system, with cut-off, regulation, diversion, prevention of countercurrent, voltage stability, diversion or overflow pressure relief and other functions.
19

2019-01

【Technical article】 Common Faults and Maintenance Strategies of Valves

First, external damage is caused by material defects. The manufacturing process of valves is very complicated. If the valve produces blowhole or slag inclusion during casting, these defects may expand and cause damage, resulting in fluid leakage.
12

2019-01

【Technical article】 Do you know the type and pressure grade of flange and sealing surface?

Flange sealing surface type introduced flange sealing surface according to the working condition, medium, pressure, specifications, temperature and other conditions, so the type of choice is not the same.
24

2018-11

【Technical article】 Cause analysis of defects in valve casting during production

1. The stomataThis is a small cavity formed by the gas that cannot be escaped from the metal during solidification. Its inner wall is smooth and contains gas, and it has a high reflectivity to ultrasonic wave.
29

2018-09

【Technical article】 Four major technical requirements of modern coal chemical industry for valve products

Direct liquefaction is also called hydroliquefaction. In the hydrogenation process, the valve, pipeline and related equipment are in the high temperature and high pressure hydrogen gas, hydrogen damage is a very big problem. When high 。。。

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