Knowledge

The sealing performance of valves is one of the most important indicators to measure the quality of valves and is also the main factor that determines

The most common definition of an actuator is: a drive device that can provide linear or rotary motion, which uses a certain driving energy source and

The plug body rotates with the valve stem to achieve the opening and closing action. Small plug valves without fillers are also called plug valves &qu

The sealing pair of the conical plug valve can be adjusted by forcing the plug body deeper into the valve seat. When the plug body is in close contact

The plug body of a cylindrical plug valve is a cylinder. This type of plug valve is often sealed by methods such as sealants, O-rings, plug expansion,

Structural features a. Rapid opening and closing, opening or closing can be achieved by rotating 90°. b. Simple structure, few parts and light wei

The basic principle of the plug valve is mainly composed of valve body, plug body, sleeve, valve stem, valve bonnet, grease nipple, handle (or other d

The definition of plug valve in standard GB/T21465 is: Plug valve is a valve whose opening and closing part is a plug body, which is driven by the val

Main design and manufacturing standards for check valves GB/T 13932-1992 "General valves - Iron swing check valves " GB 12236-1989 "Gen

The closing part of the diaphragm check valve is composed of a diaphragm, which is offset or bonded to the valve seat. The diaphragm check valve is a

The disc of the butterfly check valve is disc-shaped and rotates around the rotating shaft of the valve seat channel. Because the channel inside the v

A check valve whose disc moves up and down along the axis of the disc sealing surface. Lift check valves are divided into vertical lift check valves a