Document Type and Number:
Japanese Patent JPS4866225
Kind Code:
A
Abstract:
An electrically-operated pressure relief valve has a closure member which can be urged open by pressure at the valve inlet. A cross-member is secured to the shaft of a torque motor for pivotal movement within the valve body. One end of said cross-member engages a stem of said closure member, and the cross-member is also engaged by a spring which rotates the shaft to urge the closure member shut. The torque motor is energisable to rotate the shaft against the spring to open the valve. The bias applied by the spring is variable and the distance between the shaft and the engagement of the cross-member with the valve stem is also variable.
Application Number:
JP12534672A
Publication Date:
September 11, 1973
Filing Date:
December 15, 1972
Export Citation:
International Classes:
F02C9/16; F16K31/02; G05D16/20; (IPC1-7): F15B5/00