Two stage valve assembly

Details Two stage valve assembly Two stage valve assembly

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 17/02 (2006.01) F16K 25/00 (2006.01) G05D 16/00 (2006.01) G05D 16/06 (2006.01) G05D 16/20 (2006.01)

Patent

CA 2375937

The present invention provides an improved two-stage pressure regulator for various compressed gases, and more particularly to pressure regulators used for gaseous fuels such as compressed or liquified natural gas. The pressure regulator of the present invention is a robust, compact, high flow, low droop, low pressure drop and low creep regulator which is suitable far both OEM and aftermarkct use. It can be used by itself, or with an optional third stage to provide a three-stage regulator such as the atmospheric (or zero pressure, differential) types commonly used to regulate the fuel pressure for gaseous carburation systems. It is particularly useful in mono-, bi-, and dual fuel engine applications. The two-stage regulator of the present invention consists of a single base (the "regulator base") upon which are mounted all of the components of the regulator, including the first and second stage regulator spring towers, a pressure relief valve (or PRV) spring tower, a filter assembly, a high pressure solenoid-activated valve, and an optional cylinder pressure sender. Channels provided in the base, for example by machining, permit the dow of coolant or other fluid through the base to control the temperature of the pressure regulator, and thus the outlet temperature of the gas flowing through it.

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