The difference between pneumatic valve gas-off

Pneumatic valve ( Also known as the two valve or switch valve) Open valve and air valve can be divided into gas. As the name suggests, the gas valve open refers to using pressurized in the instrument air to the actuator, the valve opens. When actuators will be its instrument air when removing the valve closed. Gas valve. Are both open means, because the process system air source fault broken happens sometimes, according to the needs of technological process at this time, some valve to open, Such as cut-off valve) , from valve to close ( Such as exhaust valve) So that the designer in the process design according to the need and use gas valve open or close the valve. Pneumatic valve is a valve with pneumatic actuator. Pneumatic actuators execution speed is relatively fast, the fastest switching speed. Seconds/time, so usually also called pneumatic quick cut-off valve. Pneumatic valve usually configure various accessories, such as solenoid valve, air source treatment sanlian pieces, limit switch, locator, control box, etc. , in order to realize the local control and remote centralized control, in the control room can control the switch of the valve, do not need to run to the field or high altitude and dangerous manual control, to a great extent, save the human resources and time and safety. Pneumatic valve specific classification are: stainless steel pneumatic valve, pneumatic valve, plastic sanitary pneumatic valves, pneumatic valves, carbon steel 2 vent valve, tee pneumatic valve, pneumatic valve spool.