US 5,275,204 AGranted

Valve element

AssigneeUtex Industries, Inc.

InventorsJohn T. Rogers, Frederick B. Pippert

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Abstract

A valve element is disclosed comprised of a body section, upper guide, lower guide, sealing section and reinforcement section. The reinforcement section is made of materials having a hardness greater than the lower guide and sealing section. The reinforcement section, as well as the sealing section, have a frustoconical outer surface to increase support of the sealing section due to bracing from a mating valve seat annular sealing surface. The frustoconical outer surfaces of the valve element combine to form a uniform frustoconical surface. Two sealing sections may be disposed above and below the reinforcement section. These two sealing sections have frustoconical outer surfaces that cooperate with the frustoconical surface of the reinforcement section to form a continuous, co-extensive frustoconical outer surface.

Claims20

Dependent claims

A valve element for sealing with an annular valve seat, comprising:

a body portion having a first side, a second side and an annularly extending sealing section defining a sealing surface;
an upper guide secured to said first side of said body portion, said upper guide being formed of a substantially non-metallic material;
a lower guide secured to said second side of said body portion, said lower center guide being formed of a substantially non-metallic material;
an annularly extending reinforcing section secured to said sealing section, said reinforcing section being disposed proximate said lower guide relative to said sealing section, said reinforcement section being formed of a material that is harder than the material forming said sealing section and said lower guide, said valve element being formed into an integral structure by bonding together of said upper guide, said body portion, said reinforcing section and said lower guide.

1 more element

Dependencies are inferred from the claim text.