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2026-04-23

The differences between stainless steel sheet-type ball valves and two-piece and three-piece ball valves

Firstly, a one-piece ball valve is a manual valve. Its structure is of an integrated type, with the ball being stabilized by a plug head. This design makes maintenance easier and the ball's valve diameter is relatively small. It is inserted from one side of the valve body, and the valve seat needs to be screwed in before pressing down on the ball. Some non-standard one-piece ball valves have a short structure, so the best way to distinguish them is by the structure of the valve body. A one-piece ball valve is fixed by a plug head, which is convenient for maintenance and practical. It is commonly used in small-sized valves.

2026-04-23

Stainless steel flange filter

The Y-type filter is an indispensable device for the pipeline system that transports media. It is usually installed at the inlet end of pressure reducing valves, relief valves, level control valves or other equipment to remove impurities from the media, thereby protecting the normal operation of valves and equipment. This filter has the characteristics of advanced structure, low resistance and conv

2026-04-23

What is a flange? What are the different classifications?

I. Definition of a Flange When it comes to flanges, many people feel quite unfamiliar. But for those who are engaged in mechanical or engineering installation, they should be very familiar with them. A flange is also called a raised disk or protruding rim. Its name is the transliteration of the English word "flange". It is a component that connects two shafts to each other, used for connecting pipes, pipe fittings or equipment. Any connection component that uses bolts to connect the periphery of

2026-04-23

Ball valve and its working principle, function and application

The opening and closing component of a ball valve is a spherical body with a circular channel that rotates around an axis perpendicular to the channel. The spherical body rotates with the valve stem to achieve the purpose of opening and closing the channel. Ball valves can be tightly closed with only a 90 degree rotation and a small rotational torque. According to the working con

2026-04-23

Why are long-neck valve covers used for low-temperature valves?

Valves suitable for operating in medium temperatures ranging from -40℃ to -196℃ all adopt long-neck valve covers. The use of long-neck valve covers stipulates that low-temperature valves include low-temperature emergency shut-off valves, low-temperature stop valves, low-temperature check valves, LNG-specific low-temperature valves, NG-specific low-temperature valves, etc., and are mainly used in chemical plants such as those for 300,000 tons of ethylene and liquefied natural gas. The output of liquid low-temperature media such as ethylene, liquid oxygen, liquid hydrogen, liquefied natural gas, and liquefied petroleum products are not only flammable and explosive, but also need to va

2024-09-30

What are the causes of leakage in pneumatic butterfly valves?

Pneumatic butterfly valves are used for controlling solid materials and are often employed as discharge valves at the bottom of tanks, such as those of cement tanks and stone powder tanks. They are used for discharging materials and quickly cutting off the flow. Since most dusty materials contain particles of various sizes, the wear on the valve sealing surface is inevitable. Incorrect selection can significantly reduce the service life of the valve or cause internal leakage very quickly, thereby affecting its continued use.