Self-acting double control point emergency cut-off valve is a kind of mechanical security shut off device. Its closing action is only powered by the energy stored in the spring from previous manual operation, without the necessity of power supply, gas source, hydraulic or other energy. It is safe, reliable and highly sensitive and can be widely used in petroleum, chemical industry, metallurgy, electric power and other fields, especially for natural gas pipeline emergency shut-off valve.

Features:

1. The shut-off valve possesses automatic detection and automatic shut-off functions. When the system pressure fluctuations in the gathering pipeline exceeds the set value due to failure, the valve will automatically cut off fluid under the action of spring force to ensure the security requirements of the system.

2. Novel design and reasonable structure enable the valve to be closed quickly and sealed tightly, with accurate shut-off pressure.

3. The valve is equipped with two sets of pressure sensors. Through different connection, it can not only make the valve controlled by either one pressure collection signal or two pressure collection signals at the same time. When the valve is controlled by the two signal collection points, they constitute a logical relationship "or"; that is to say, as long as one collection signal exceeds the set value, the valve will automatically cut off the fluid in the pipeline.

4. The valve may collect signals on the field and remotely. As for field signal collection, it is to collect the pressure signals of the pipeline behind the valve through the pressure pipe on the valve body, while for remote signal collection, it is to connect the pressure tube to the remote device to collect the pressure signal of the remote device;

5. Because the valve adopts mechanical security shut-off device, the valve can also be used in flammable, explosive and other occasions.