| 摘要 |
A two-piece retainer ring fits within opposed grooves (80,82) in a gate valve seat (64) and the adjacent valve body (12). The opposed grooves are of a width greater than the width of the two ring segments (84) comprising the two-piece ring and limit the movement of the associated floating seat (64). A wave spring (86) urges the ring segments (84) radially outwardly in the grooves and an access opening (88) to the grooves permits the ring segments (84) to be actuated by a suitable tool for removal of the seat, if desired.
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