Expanding gate valve having mechanically secured seats

Details Expanding gate valve having mechanically secured seats Expanding gate valve having mechanically secured seats

F - Mech Eng,Light,Heat,Weapons

16

K

251/74

F16K 43/00 (2006.01) F16K 3/18 (2006.01) F16K 3/30 (2006.01)

Patent

CA 1125262

Case 211 EXPANDED GATE VALVE HAVING MECHANICALLY SECURED SEATS Roy R. Dare Houston, Texas Robart C. Houlgrave Houston, Texas William S. Shelton Houston, Texas Abstract of the Disclosure An expanding gate valve having seats (74) which are mechanically secured in place. The valve body has seat pockets which include undercut grooves (78) intersected by a cylindrical body cavity (24) to form a pair of openings (80) to each groove. Each valve seat has a pair of lugs (90) which may be fitted through the openings and into the undercut groove. Subsequent rotation of the seat locks the lugs in the groove to secure the seat in place in its seat pocket. Each seat is able to pivot about an axis extending be- tween the lugs in order to compensate for irregularities in the contact surfacesof the gate or seat.

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