Swagelok Company

Joseph K Iveljic

Cal R Brown

Bruce A Hotton

George A Carlson

Jared S Timko

Kevin Mracek

A ball valve includes a body having a passageway there through with a ball member disposed in the passageway and mounted for selective rotation between valve open and valve closed positions to control fluid flow. A pair of flange grooves are provided in the body on opposite sides of the ball, each flange groove extending radially from the passageway. A pair of seat rings are disposed in the passageway on opposite sides of the ball. Each seat ring has a first sealing surface in contact with an outer surface of the ball and a radially extending annular flange or tab received in an associated one of the flange grooves. The seat design further includes a pair of annular flange seals each disposed in a respective one of the flange grooves. The seat configuration achieves a cantilever effect to improve the temperature and pressure cycling performance of the valve.

Ball valve seat seal

A ball valve ( ) includes a body (A) having a passageway ( ) extending therethrough with a ball member (B) disposed in the passageway and mounted for selective rotation between valve open and valve closed positions to control fluid flow through the valve. A pair of flange grooves are provided in the body on opposite sides of the ball. each flange groove extending radially from the passageway. A pair of seat rings ( ) are disposed in the passageway on opposite sides of the ball. Each seat ring has a first sealing surface ( ) in contact with an outer surface of the ball and a radially extending annular flange or tab ( ) received in an associated one of the flange grooves ( ). The seat design further includes a pair of annular flange seals ( ) each disposed in a respective one of the flange grooves. The seat material is preferably made of a relatively harder and stiffer material compared to PTFE, such a PEEK The seat configuration achieves a cantilever effect to improve the temperature and pressure cycling performance of the valve. The flange seals are energized and made of an elastomer material or other suitable flexible seal materials having spring-like characteristics.

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Willowick, OH, United States of America

Joseph K Iveljic