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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 。。。
25

2018-08

【Technical article】 The world's most wear-resistant alloy is 100 times more durable than high-strength steel

According to foreign media reports, researchers at the National Laboratory of Albuquerque Sandia, New Mexico, developed a new wear-resistant material consisting of 90% ...
18

2018-08

【Technical article】 Installation and maintenance of filters

All kinds of filters in front of the equipment, do not allow to open the packaging bag or packaging film; and according to the direction marked on the packaging box to store the filter...
11

2018-08

【Technical article】 Domestic valves imported more than 3 billion US dollars in less than half a year

According to data released by China Customs, from January to May 2018, China imported 427.96 million sets of valves , an increase of 2.5% over the same period of last year.

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