Patent ID: 6581628
Filing Date: 2003-06-24
Classification: G05D,Y10T

Abstract:
A pressure reducing valve assembly for receiving fluid from a high pressure line and delivering the fluid to a low pressure line, the valve assembly comprising:an elongated tubular body having a vent operable to prevent air pressure buildup within the body and including a compression spring housed therein; a pressure reducing valve including a high pressure port for receiving fluid from the high pressure line, a low pressure port for delivering fluid to the low pressure line, a single valved opening, and an inner chamber interposed between the opening and the high pressure port and fluidly communicating therewith so that fluid pressure in the chamber is substantially the same as fluid pressure in the high pressure port; a pressure reducing reservoir defined substantially between the body and the pressure reducing valve, said pressure reducing valve being shiftable into and out of a closed position, wherein fluid communication between the inner chamber and the pressure reducing reservoir is prevented, said pressure reducing reservoir comprising the only substantial fluid communication between the body and the pressure reducing valve, said high pressure port fluidly communicating with the pressure reducing reservoir by said single valved opening, said pressure reducing reservoir fluidly communicating with the low pressure port so that fluid pressure in the reservoir is substantially the same as fluid pressure in the low pressure port; and a base having an inlet port operable to fluidly communicate with the high pressure line, an outlet port operable to fluidly communicate with the low pressure line, and a single valve port operable to receive the pressure reducing valve such that the pressure reducing valve may be completely removed with the body through the valve port, said base being coupled to the body wherein the pressure reducing valve is disposed ther between so that the inlet port is in fluid communication with the high pressure port and the outlet port is in fluid communication with the low pressure port.