Method of judging internal leakage of natural gas ball valve

​Fixed shaft ball valve is commonly used on natural gas pipelines, and its general inspection method is: turn the valve to the fully open or fully closed po…

Valve performance testing

1. Inspection of appearance and logoCheck content: whether the appearance of the valve has defects, such as cracks, bubbles, dents, etc. Check signage, namep…

O-type ball valve and V-type ball valve difference

​Ball valve has many kinds of structure, but basically the same little difference, are the opening and closing parts for the round ball core, mainly by the …

In the thermal system, the thermal trap plays a very important role, and its performance directly affects the stability and energy efficiency of the steam sy…

Harm and protection of abnormal pressure boost in gate valve

​Gate valves usually have single gate, double gate, wedge, parallel and other structural designs

Valve sealing surface grinding is a key step to ensure sealing performance

The sealing performance of the valve directly affects the control effect of the fluid medium and the safe operation of the system, the grinding of the valve …

Valve sealing surface material selection factors to consider

​Sealing surface is the most critical working face of the valve, the quality of the sealing surface directly affects the service life of the valve, and the …

What are the precautions for manual operation of electric valves

​The electric actuator of valve ‍ is used to control the valve. If the valve cannot be opened and closed due to some factors, such as power failure, failur…

Working principle of pressure valve

Pressure valve is a device used in hydraulic system to control and regulate liquid flow pressure.

Six reasons for valve sealing surface damage

Because the seal plays a role in cutting and connecting, adjusting and distributing, separating and mixing media on the valve channel, the sealing surface is…