F - Mech Eng,Light,Heat,Weapons – 16 – J
Patent
F - Mech Eng,Light,Heat,Weapons
16
J
251/56
F16J 15/18 (2006.01) F16J 15/16 (2006.01) F16J 15/32 (2006.01) F16K 41/04 (2006.01)
Patent
CA 1259597
VALVE AND IMPROVED STEM SEAL THEREFOR Abstract of the Disclosure An improved valve with an improved stem seal includ- ing a body having a valve chamber, an inlet to and an outlet from the valve chamber, and a valve seat in the valve chamber, a valve member movable in the valve chamber and coacting with the valve seat to control flow through the valve, a valve stem connected to the valve member and extending through an opening in said body, means coacting with said stem to move said valve member, a stem sealing assembly positioned in said opening surrounding said stem and means for retaining the stem sealing assembly in position, said assembly including a wear resistant and corrosion resistant sealing ring having a plurality of internal and external grooves with internal and external sealing lips between the grooves, and an annular end recess opening toward the valve member, a soft sealing ring in each of the inner rod outer grooves farthest from said valve member and a load ring positioned in said end recess and having a tapered external surface extending toward the axis of said stem in a direction toward said valve member. In a modified form of said sealing assembly the load ring also includes an internal taper extending toward the axis of said stem in a direction away from the valve member.
489482
Cameron Iron Works Inc.
Smart & Biggar
LandOfFree
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