Bonded valve with replaceable insert
First Claim
1. In a poppet-type valve, said valve including a reciprocable metal valve member and a metal seat member, said members having mateable tapered annular seating surfaces for making sealing contact, said reciprocable valve member having a replaceable insert of elastomeric material installed in a groove in said reciprocable member, said insert having a tapered annular seating surface for making sealing contact with the seating surface of said metal seat member,the improvement in said poppet-type valve which comprises:
- said reciprocable metal valve member having an outer annular groove of circular arc-shape,said elastomeric material having a circular arc-shaped surface mateable with the groove in said reciprocable metal valve member, said elastomeric insert being adapted to be received in the groove of said valve member,said reciprocable metal valve member having an elastomeric backup member bonded to a transverse metal surface of said reciprocable member, opposite from the tapered annular seating surface of said reciprocable valve member,said elastomeric insert having a higher durometer hardness than said elastomeric backup member,said backup member abutting at least a major portion of a transverse surface of said elastomeric insert at a location opposite the tapered seating surface of said insert,the extent of said transverse surface of the insert being defined by boundaries intercepted by directions parallel to the axis of said reciprocable valve member through upper and lower ends of the tapered surface of said insert as viewed in an axial cross-section of said reciprocable valve member.
3 Assignments
0 Petitions
Accused Products
Abstract
The invention is of a valve member having a replaceable deformable insert installed in a groove of the member and a deformable backup member secured to the valve member, preferably by bonding, and abutting so as to abut at least a major portion of a transverse surface of the insert opposite a tapered seating surface thereof. The insert may be of harder more wear resistant material than the backup member extending service life and permitting easier repair or replacement of the insert.
23 Citations
6 Claims
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1. In a poppet-type valve, said valve including a reciprocable metal valve member and a metal seat member, said members having mateable tapered annular seating surfaces for making sealing contact, said reciprocable valve member having a replaceable insert of elastomeric material installed in a groove in said reciprocable member, said insert having a tapered annular seating surface for making sealing contact with the seating surface of said metal seat member,
the improvement in said poppet-type valve which comprises: -
said reciprocable metal valve member having an outer annular groove of circular arc-shape, said elastomeric material having a circular arc-shaped surface mateable with the groove in said reciprocable metal valve member, said elastomeric insert being adapted to be received in the groove of said valve member, said reciprocable metal valve member having an elastomeric backup member bonded to a transverse metal surface of said reciprocable member, opposite from the tapered annular seating surface of said reciprocable valve member, said elastomeric insert having a higher durometer hardness than said elastomeric backup member, said backup member abutting at least a major portion of a transverse surface of said elastomeric insert at a location opposite the tapered seating surface of said insert, the extent of said transverse surface of the insert being defined by boundaries intercepted by directions parallel to the axis of said reciprocable valve member through upper and lower ends of the tapered surface of said insert as viewed in an axial cross-section of said reciprocable valve member. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification