Pressure responsive pilot control valve

Details Pressure responsive pilot control valve Pressure responsive pilot control valve

F - Mech Eng,Light,Heat,Weapons

15

B

F15B 13/02 (2006.01)

Patent

CA 2052418

- 18 - PRESSURE RESPONSIVE PILOT CONTROL VALVE ABSTRACT OF THE DISCLOSURE A pressure responsive pilot control valve has a spool which is movable by a metal diaphragm sensing the pressure in a flowline. The spool includes two poppet seal rings mounted thereon, the poppet seal rings having concentric axes and which are used for opening and closing fluid ports. The fluid ports are opened and closed for the purpose of sending a signal to a latching relay valve to bleed off a shut in valve actuator which will terminate flow in the flowline. The poppet seal rings of the pilot move responsive to a high or a low pressure condition. A low pressure spring is provided for measuring a low pressure condition and a high pressure spring is provided for measuring a high pressure condition. SPECS/BAR4485.1&2

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