Knowledge

Valve sealing is an important guarantee of valve quality. Valve product quality and technical level are related to the development of various fields such as petroleum, chemical industry, electric powe

Shut-off valves, throttle valves, pressure reducing valves, check valves and other valves are directional. If they are installed upside down, the throttle valve will affect the use effect and life; th

The maintenance principles during valve operation are as follows: ① Keep the exterior and active parts of the valve clean and protect the integrity of the valve paint. The surface of the valve, the tr

1. Why is the double-seat valve prone to oscillation when working with a small opening For a single core, when the medium is a flow-open type, the valve stability is good; when the medium is a flow-cl

1. The two have different uses 1. The purpose of the exhaust valve well: In order to facilitate the opening and closing of part of the pipe network operation or maintenance work, the valves of the und

1. Cleaning method Welding slag, rust, slag, etc. in the pipeline cause blockage or jamming in the throttle, guide part, and balance hole of the lower valve cover, causing strain and scratches on the

Valve corrosion is one of the main causes of valve failure. What are the forms or causes of corrosion? Generally, there are six forms of corrosion. Corrosion is the process of getting metals to their

I. Working principle 1. High temperature and high pressure power station gate valve The high temperature and high pressure power station gate valve changes the flow rate and kinetic energy of the flui

The main seal of a slag discharge valve is a balanced gate seal, while an ordinary sealing surface is inclined. Ordinary slag discharge valves are prone to damage the sealing surface and leak, and the

Forged steel flange globe valve is a commonly used shutoff valve, which is mainly used to connect or cut off the medium in the pipeline, and is generally not used to adjust the flow. The applicable pr

(Stainless steel) ball valves and plug valves belong to the same type of valves. The difference is that the opening and closing part of the ball valve is a sphere with a through hole. This sphere rota

The butterfly plate of the butterfly valve is installed in the diameter direction of the pipeline. Valve Net In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rot