F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
103/154, 277/56,
F16K 1/46 (2006.01)
Patent
CA 2011696
A2348 VALVE WITH REPLACEABLE SEAL ELEMENT ABSTRACT OF THE DISCLOSURE A valve assembly comprises a rigid seat and a valve for opening and closing the seat. The valve comprises a rigid valve body and an elastomeric seal element mounted on the valve body. The seal element includes smoothly concave seat-engaging surface which tapers in a forward direction. An annular recess formed in a rear surface of the seal element extends to a depth at least one-third of the distance from a rear end to a front end of the concave surface to define therewith a flexible lip. The walls of the recess are oriented such that pressures present behind the valve intensify the engagement of the seal element with both the seat and valve body.
National-Oilwell
Riches Mckenzie & Herbert Llp
LandOfFree
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