Valve seat with sediment guard
AssigneeDaniel Industries, Inc.
InventorKee W. Kim
Life of this patent
Estimating the term…
Abstract
Valve seat rings are provided having sediment guard recesses formed in the back face portions thereof, which recesses are in the form of annular grooves having restricted annular openings and defining an internal stop shoulder. A sediment guard is movably positioned within the receptacle and includes an annular sediment blocking portion that protrudes through the restricted groove for sediment blocking engagement with a radial surface defining a portion of the seat recess. The sediment guard also defines a stop portion that is engageable with the stop shoulder to prevent separation of the sediment guard from its receptacle. The sediment guard is urged toward the radial surface of the seat recess by compression springs located within the receptacle.
Claims7
A valve mechanism for controlling the flow of fluid, said valve mechanism comprising:
- (a) a valve body structure defining a valve chamber and inlet and outlet flow passages intersecting said valve chamber, said valve body further defining annular seat recess means about said flow passages, said seat recess means defining radial surface means;
- (b) a gate member being movably positioned within said valve chamber and being movable between open and closed positions to control the flow of fluid through said flow passages;
- (c) means for imparting controlling movement to said gate member;
- (d) annular seat means being movably retained within said seat recess means and having a sealing portion establishing sealing engagement with said gate member and a rear face portion opposing said radial surface means, said rear face portion being formed to define receptacle means;
- (e) sediment guard means being movably positioned within said receptacle means;
- and
- (f) urging means continuously maintaining said sediment guard means in contact with said radial surface means.
Dependencies are inferred from the claim text.