초록 ▼

A manifold assembly includes a housing unit which has a check valve assembly and a pressure relief valve assembly formed in one integral unit. When the check valve is in a closed position, the dispensing line is sealed off from the pumping assembly. In addition, the check valve also seals off the pr

A manifold assembly includes a housing unit which has a check valve assembly and a pressure relief valve assembly formed in one integral unit. When the check valve is in a closed position, the dispensing line is sealed off from the pumping assembly. In addition, the check valve also seals off the pressure relief outlet in the same movement, by the use of two O-rings placed on a lockdown member. Line maintenance tests may be performed accurately, as well as testing of the pumping assembly, when the check valve and pressure relief valve are closed. This structure provides an improved assembly since the check valve and pressure relief valve are formed in one integral unit so as to be adjacent one another so that both valves can be conveniently closed off at the same time during a maintenance check.

대표청구항 ▼

[ What is claimed is:] [1.] A housing unit for use with a manifold mounted at an outlet end of a submersible pump, said housing unit comprising:a check valve assembly having a check valve housing mounted on the manifold and having a check valve member disposed therein;a lockdown member disposed in s

[ What is claimed is:] [1.] A housing unit for use with a manifold mounted at an outlet end of a submersible pump, said housing unit comprising:a check valve assembly having a check valve housing mounted on the manifold and having a check valve member disposed therein;a lockdown member disposed in said check valve assembly and being operative to engage with and close said check valve member during a testing procedure; anda pressure relief valve assembly mounted on said check valve housing, for adjusting a relief pressure to a desired setting, so that said check valve assembly and said pressure relief valve assembly are proximate each other,wherein said pressure relief valve assembly comprises an expansion relief body mounted on said check valve housing, and an adjustment member which protrudes from one end of said expansion relief body, wherein said adjustment member adjusts the relief pressure independently of said lockdown member.