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US 4,399,834 AGranted
Chemically inert control valve
OwnerHans D. Baumanninventor
Life of this patent
Estimating the term…
Abstract
A control valve, the internal wetted working parts of which are made of corrosion resistant material and which are completely enclosed by and easily removed from a steel or stainless steel pressure vessel, and which is capable of tight shut-off when subjected to fluid differential pressure.
Claims8
Chemically inert control valve comprising
- (a) housing having a longitudinal central bore extending throughout its lengths;
- (b) inlet and outlet ends formed on said housing, said inlet and outlet ends adapted to be coupled in a pipe line;
- (c) a tubular cylindrical insert having a central port and two terminating ends at least one of which being recessed, removably received in said central bore;
- (d) sealing means slidingly arranged inside the central port of said tubular insert and comprising a spool member attached to a flexible web portion connected to an outer flange which abutts one of the terminating and recessed ends of said tubular insert and being arranged to allow fluid differential pressure to deflect said web portion and thereby allow a sliding displacement of said spool member within the central port of said insert;
- (e) a central perpendicular cross-bore intersecting said housing, insert and spool member and having an enlarged diameter portion within said housing and insert containing a tubular packing arrangement;
- (f) a plug slidably engaged within said packing arrangement and said perpendicular cross-bore, one lower terminating end of said plug arranged to selectively engage or disengage the spool member portion of said sealing means;
- (g) means to position said plug;
- (h) means to compress said packing arrangement.
5 more elements
Dependencies are inferred from the claim text.