DN25-DN250 150LB~2500LB Self-operated pressure control valve
DN25-DN250 150LB~2500LB Self-operated pressure control valve
Self-operated pressure control valve
Material of valve body: WCB, 304, 316
Spool material: WCB, 304,316
Cover type: standard type, normal temperature type, high temperature type, low temperature type, heat dissipation type
bellows seal type
Pressure qrade: PN16 PN25,PN40.PN64
Seat design: single seat, pressure balance, two seats
Flow characteristics: fast open mode
Action mode: pressure relief before valve, pressure relief after valve
Voltage regulation range: 15-3000kPa
Spool material: WCB, 304,316
Cover type: standard type, normal temperature type, high temperature type, low temperature type, heat dissipation type
bellows seal type
Pressure qrade: PN16 PN25,PN40.PN64
Seat design: single seat, pressure balance, two seats
Flow characteristics: fast open mode
Action mode: pressure relief before valve, pressure relief after valve
Voltage regulation range: 15-3000kPa
Quantity
Self-operated pressure control valve
Self actuated pressure control valve do not depend on any external signal for pressure control. As the name suggests, pressure in the process line itself is used as an actuating signal to open or close the pressure control valve.
Aflow control valve can be used to control the pressure at either upstream or downstream of the control valve. If the pressure upstream to the valves is used to throttle the control valve, then the upstream pressure is maintained at a specified set point and such a valve is known as a backpressure control valve, as it maintains the backpressure imposed by the control valve.
If pressure at immediate downstream point of the valve is used as a signal to throttle the control valve, then the downstream pressure is maintained at a specified set point and such valves are known as self actuated pressure control valves.
A Self actuated pressure control valve uses a pitot tube which gives access for process fluid to pressurize the diaphragm which then acts to open the valve so process fluid from process line can pass through.
For a pressure regulator valve, pitot tube connects the diaphragm casing to a point downstream of control valve. When the pressure downstream to control valve increases beyond setpoint, process fluid exerts increased pressure on the diaphragm thus closing the valve. Closing of the valve stops process flow thus reducing the valve downstream pressure back to setpoint level.
When the pressure downstream of control valve drops below the setpoint level, process fluid from diaphragm casing recedes back to process line. This relieves pressure on diaphragm and opens the valve to allow increased process flow. Increased process flow leads to increase in pressure back to its setpoint.
Talk To Our Team
Have a question for our team? Get in touch with the details below.
BOTIM
+39 389 949 9067
PHONE
+39 389 949 9067
CONTACT INFORMATION
WORKING HOURS