Attachment control valve comprising
2015-12-25 by bridge
1, Gas Control Valve positioner is used to improve the performance of the control valve to adjust the operating characteristics, to achieve the correct positioning;
2, valve position switch displays upper and lower valve stroke working position;
3, to secure his position valve pneumatic control valve when the air supply fails, the valve is in the open position to maintain gas supply before the fault occurred;
4, pneumatic
magnet valve to achieve electromagnetic switching valve during a power failure to ensure that the valve is in the desired safety opening position;
5, the hand wheel when the control system controller fails, you can switch to manual mode operation of the valve;
6. Following the action pneumatic actuator allows dynamic acceleration, reducing transmission time;
7, the air filter for the purification of gas supply valve to regulate pressure;
8, the gas tank when the gas supply fails to ensure that no spring cylinder piston actuator valve operation to be able to control the fail-safe position. Its size depends on the requirements of the size of the cylinder, valve and valve operation time and other working conditions;