Description:
Self-operated control valve, also known as self-operated control valve, is a control valve that relies on the pressure and temperature of the medium flowing through the valve as an energy source to drive the valve to work automatically, without external power supply and secondary instruments.
Self-operated control valves are mainly divided into self-operated pressure control valves, self-operated differential pressure control valves, self-operated temperature control valves, and self-operated flow control valves.
Features:
Self-operated pressure regulating valve does not require external energy and can work in places without electricity and gas, which is convenient and saves energy. The pressure segment range is narrow and cross each other, and the adjustment accuracy is high. The pressure setting value can be set continuously during operation. Regarding the pressure adjustment after the valve, the ratio of the pressure before the valve to the pressure after the valve can be 10:1～10:8. Rubber diaphragm detection, the actuator has high measurement accuracy and sensitive action. The pressure balance mechanism is adopted to make the control valve sensitive and precise.
Applications:
It is applied to the automatic control of pressure reduction and pressure stabilization or pressure relief and stabilization of gas, liquid and steam medium.
others:
1.The water supply type (G) and return water type (H) differential pressure control valves must be installed on the water supply pipe and the return pipe respectively;
2.Control the pressure difference accuracy ± 7.5%;
3. Nominal pressure: 1.6MPa, 2.5MPa;
4. the medium temperature 0-150 ° C;
5. the pressure connection pipe connection end 1/2" pipe thread, the pressure pipe length 1.5m;
6. Support internal control of the controlled system;
7. Eliminate the impact of external network pressure fluctuations on the controlled system;
8. Divided into constant pressure difference type and adjustable pressure difference type;
