Pressure balanced valve with diaphragm valve member end seal

摘要

A diaphragm sealed, pressure balanced valve assembly includes a valve body and a cartridge connected to the valve body. The cartridge includes a cartridge loading end having a retaining member engaged to the cartridge loading end. A valve member slides coaxial to a longitudinal axis of the valve body. A resilient material first diaphragm is connected to and extends diametrically outward from the valve member having a diaphragm body clasped between the retaining member and the cartridge loading end, creating a first diaphragm fluid pressure boundary. A resilient material second diaphragm is connected to and extends diametrically outward from the valve member at an opposite end of the valve member with respect to the first diaphragm and has a diaphragm body clasped between first and second adjustable retention members, creating a second diaphragm fluid pressure boundary.

主权项

1. A diaphragm sealed, pressure balanced valve assembly, comprising:
a valve body; and a cartridge connected to the valve body, the cartridge including:
a cartridge loading end;a retaining member engaged to the cartridge loading end;a valve member sliding coaxial to a longitudinal axis of the valve body;a resilient material diaphragm connected to and extending diametrically outward from the valve member having a diaphragm body clasped between the retaining member and the cartridge loading end creating a fluid pressure boundary;a piston end slidably received in a cylinder cavity of the retaining member; andan armature portion oppositely oriented with respect to the piston end;wherein when the armature portion of the valve member is slidably moved coaxially to the longitudinal axis of the valve body to a valve open position a biasing force is created by the diaphragm when the diaphragm body elastically deflects between a valve closed position and the valve open position, the biasing force subsequently assisting sliding movement of the valve member thereby decreasing a valve closing time to reach the valve closed position when the coil is de-energized.