Remotely actuated multiple pressure direct acting relief valve

Details Remotely actuated multiple pressure direct acting relief valve Remotely actuated multiple pressure direct acting relief valve

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 17/06 (2006.01)

Patent

CA 2423021

A multiple pressure direct acting relief valve is disclosed. The multiple pressure relief valve comprises an actuating cylinder, a relief valve and an adjustment screw interconnecting the actuating cylinder and the relief valve. The relief valve includes a low pressure spring which biases a poppet valve arrangement permitting the poppet valve arrangement to be actuatable at a first pre-determined pressure. The actuating cylinder includes a piston that is biased by a high pressure spring causing an additional compressive force to be applied to the poppet valve arrangement through an actuating rod received through the adjustment screw. When pressure is applied to the piston within the actuating cylinder, an additional compressive force is applied by the high pressure spring and the actuator rod to the poppet valve arrangement causing the poppet valve arrangement to be actuatable at a second pre-determined pressure. Lock nuts are provided on the adjustment screw that interconnects the actuating cylinder and the relief valve. When the lock nuts are disengaged, the position of the adjustment screw can be moved relative to the actuating cylinder and the relief valve permitting the adjustment of both pre-determined actuating pressures for the poppet valve arrangement.

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