Carl W Calhoun

US Patent:

51390426, Aug 18, 1992

Filed:

May 21, 1990

Appl. No.:

7/526507

Inventors:

Carl R. Calhoun - Midland TX

International Classification:

F16K 4300
F16K 5100

US Classification:

137 15

Abstract:

A valve seat for a valve used with a treater tank comprising a body having a generally cylindrical bore therethrough, the body having a first end, a second end and being made of metal, the first end having a counterbore concentric with the cylindrical bore, the body having means on the second end for mounting the valve seat in the valve and an insert carried by the body and received in the first end, the insert being comprised of an erosion-resistant synthetic polymeric material having a cylindrical passageway therethrough, the insert having a first portion defining first inner and outer concentric cylindrical surfaces, the first outer surface having a diameter greater than the diameter of the counterbore, an annular sealing surface being formed on the first portion, and a second, generally cylindrical portion, said second portion being received in the counterbore and means disposed between the body and the second portion to secure the insert to the body and effect fluid-tight sealing between said insert and said body.

US Patent:

50485580, Sep 17, 1991

Filed:

Jan 29, 1991

Appl. No.:

7/647283

Inventors:

Carl R. Calhoun - Midland TX

International Classification:

F16K 4300
F16K 5100

US Classification:

137407

Abstract:

A valve seat for a valve used with a treater tank comprising a body having a generally cylindrical bore threthrough, the body having a first end, a second end and being made of metal, the first end having a counterbore concentric with the cylindrical bore, the body having means on the second end for mounting the valve seat in the valve and an insert carried by the body and received in the first end, the insert being comprised of an erosion-resistant synthetic polymeric material having a cylindrical passageway therethrough, the insert having a first portion defining first inner and outer concentric cylindrical surfaces, the first outer surface having a diameter greater than the diameter of the counterbore, an annular sealing surface being formed on the first portion, and a second, generally cylindrical portion, said second portion being received in the counterbore and means disposed between the body and the second portion to secure the insert to the body and effect fluid-tight sealing between said insert and said body.