Patent ID: 8430378
Filing Date: 2013-04-30
Classification: F16K

Abstract:
1. A valve apparatus for providing control of a fluid flow, including: a housing having a central casing and valve body with an inlet port and an outlet port, and a valve seat associated with one of the ports; a valve assembly including an armature, a movable fluid control member, and at least one spring biasing the valve assembly into a closed position, a diaphragm in contact with the valve seat when the valve assembly is in the closed position, and a poppet plate attached to the diaphragm, responding to movement of the fluid control member and extending over the valve seat on the inlet or outlet port; a solenoid assembly including an electromagnetic coil and a pole piece, the solenoid moving the armature when energized to allow fluid to flow through the valve apparatus, and dual adjustments for control of the fluid flow, wherein one of the adjustments adjust a sealing force of the diaphragm and the other adjustment varies a gap between the armature and the pole piece, the adjustment of the sealing force including a connection which varies the distance between a bottom end of the central casing and the valve body and a stop including an adjustable set screw, screwable into the valve body, is provided to set the distance between the bottom of the central casing and the valve body.