Bellows pressure relief valve
AssigneeGraco Minnesota Inc.
InventorTimothy S. Roman
Life of this patent
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Abstract
A valve for a reciprocating pump includes a housing, a first chamber, a second chamber, a first valve element, and a second valve element. The housing includes an inlet and an outlet. The first and second chambers are within the housing. The first chamber includes a first valve seat and is fluidly connected to the inlet. The second chamber includes a second valve seat and is fluidly connected to the outlet. The first valve element is disposed in the first chamber and includes a spring-loaded check valve element. The second valve element is disposed in the second chamber and includes a buoyant material.
Claims15
A valve for a reciprocating pump, the valve comprising:
- a housing with an inlet and an outlet;
- a first chamber within the housing, the first chamber with a first valve seat and fluidly connected to the inlet;
- a second chamber within the housing, the second chamber with a second valve seat and fluidly connected to the outlet and the first chamber;
- a first valve element disposed in the first chamber, wherein the first valve element comprises a spring-loaded check valve element;
- and
- a second valve element disposed in the second chamber, wherein the second valve element comprises a buoyant material.
Dependencies are inferred from the claim text.