Serviceable check valve

Details Serviceable check valve Serviceable check valve

2006-05-02

2006-05-02

Rivell, John (Department: 3753)

Fluid handling

Removable valve head and seat unit

Threaded into valve casing

C137S541000, C137S543230

Reexamination Certificate

active

07036523

ABSTRACT:
Within a check valve, a spring urges a poppet into the closed position. If the fluid flow through the valve attempts to reverse, the poppet will seal against the valve seat by a combination of spring resistance and fluid pressure, thereby preventing all or a significant portion of fluid flow back through the valve body. The poppet is retained in the valve body by a retainer or other suitable part or combination of parts that can be removed for service of the check valve assembly.

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