Three-way valve
AssigneeJandy Industries
InventorBruce R. Johnson
Life of this patent
Estimating the term…
Abstract
A three-way rotary plug valve comprising upper and lower radial arms carried on top and bottom shafts and supporting an integral arcuate closure member between them. The upper shaft extends through a bearing in the top closure and carries a sector position indicator having an arcuate outer surface which overlies and is coextensive with the arcuate closure sealing surface so that the precise position of the closure is apparent at all times. Marks on the top cover depict the locations of the flow passages and cooperating stop means on the cover and the position indicator prevent complete blockage of the inlet passageway from the pump.
Claims4
A rotary three-way plug valve comprising:
- a generally cylindrical valve body;
- at least three hubs extending radially from said body and having flow passageways therethrough opening into said valve body;
- a cylindrical inner surface in said body forming sealing surfaces around said flow passageways;
- each of said hubs being adapted for connection to a pump;
- a valve closure member rotatable in said body and having an outer arcuate surface engageable with said sealing surfaces and being of sufficient arcuate length to span said passageways;
- a generally circular top closure;
- a top shaft on said valve closure rotatable in and extending through said top closure;
- an operating lever secured to said top shaft for rotation thereof;
- first and second engagable stop means on said top shaft and said top closure, respectively, to prevent full closure of a flow passageway aligned with said second stop means;
- and
- symmetrical mounting means for said top closure so that same can be secured in a selected angular position on said body with said second stop means aligned with that one of said hubs connected to a pump.
Dependencies are inferred from the claim text.