The working principle of pneumatic emergency cut-off valve has four

Pneumatic emergency cut-off valve, also known as the pneumatic ball valve, it is a kind of automation system of actuators, pneumatic diaphragm actuator by a more spring or floating piston actuators and pneumatic control valve, the reception of the regulating instrument signal, fluid control technology of the pipe on the cut, or switch. It has a simple structure, sensitive reaction, reliable operation, etc. Can be widely used in petroleum, chemical, metallurgical and other industrial production. Pneumatic cut-off valve of air required by the compressed air filter, flowing through the valve body is supposed to be free of impurities and particles of the medium of liquid and gas. Working principle: 1, the valve in daily work in a normally open state, the electromagnetic valve coil is in power position, don't waste electricity. 2, when the accident happened, the valve coil instantaneous electricity, trigger quick off valve, the state of self-lock. Then the power even removed, the valve is still in the state of self-locking, does not automatically open again. 3, adopt pilot operated valve disc, open easily, even pressure 6 bar open is very relaxed, diameter greater than DN125, adopts the lever handle, valve, a switch and effort. 4, when the staff deal with the accident, artificial to open valve, will restore gas supply. Note: according to customer's requirements are available power is shut down normally closed type of emergency cut-off valve.