The pneumatic ball valve is composed of a pneumatic actuator and a ball valve. The pneumatic actuator is divided into double action and single action. The double acting pneumatic actuator has gear rack, piston, output shaft, sealing ring and other pa...

Flange gaskets above 2.5Mpa are all made of metal wound mats. 1.0Mpa-2.5Mpa flange seal with asbestos pad and black lead powder. The water pipe flange gasket below 1.0Mpa is made of rubber pad and painted with black lead powder. The packing of the pu...

Globe Valve opening and closing parts are plug-shaped discs with a flat or conical surface on the seal. The discs move linearly along the center line of the valve seat to achieve opening and closing. They are mainly used to cut off the medium in the ...

1. Prevent the valve from leaking or leaking All valves must be tested for different levels of water pressure after entering the plant. Valves that need to be dismantled for repair need to be ground. During the overhaul process, carefully check wheth...

Diaphragm Valve (Diaphragm Valve) uses a diaphragm as an opening and closing member to close the flow path, cut off the fluid, and separate the inner cavity of the valve body from the inner cavity of the valve cover. It is a special form of shut-off ...

Used as a throttle valve; the ball should be repaired in time after flushing, and the seal seat should be replaced. Used for throttling, damage to the sealing surface: not allowed for throttling The sealing surface is crushed: the bolts at the valve ...

The regulating valve is a throttling device and belongs to the moving component. Compared with the detecting component, the transmitter and the controller, in the control process, the regulating valve needs to constantly change the flow area of ​​the...

The sealing surface of the valve should be resistant to abrasion, corrosion, erosion, and abrasion. It has sufficient extrusion strength. It has sufficient oxidation resistance and thermal fatigue at high temperature. The sealing surface and the valv...

The butterfly valve (Butterfly Valve) opening and closing part is a butterfly plate, which is driven by the valve stem and rotates 90° around its own axis in the valve body to achieve the purpose of opening and closing or adjustment. It is mainly use...

The swing-type check valve adopts the built-in rocker swinging type structure. All the opening and closing parts of the valve are installed outside the valve body, and do not penetrate the valve body. Except for the sealing flange and the sealing rin...

1. Overview of pneumatic actuators Pneumatic actuators are actuators that use air pressure to drive opening and closing or adjusting valves. They are also called pneumatic actuators or pneumatic devices, but they are generally called pneumatic heads....

Cavitation and noise are the two major hazards of regulating valves in controlling high pressure differential fluids. The noise on the regulating valve is the main source of pollution in petrochemical production. In addition to the use of low-noise s...