Valves and valve actuation – Reciprocating valve – Diaphragm
Patent
1997-07-07
1998-12-22
Lee, Kevin
Valves and valve actuation
Reciprocating valve
Diaphragm
251 635, 251368, F16K 717
Patent
active
058510044
ABSTRACT:
An all metal diaphragm valve is provided. The valve includes a housing having an inlet passage and an outlet passage each of which communicates with a valve chamber. Portions of the inlet passage in the valve chamber are surrounded by a toroidal sealing bead. The valve further includes a resilient metallic diaphragm which is dished and in an unbiased condition projects away from the toroidal sealing bead. Thus, fluid may flow through the inlet passage, through the valve chamber and out of the outlet passage. Actuation of a valve stem will cause the metal diaphragm to deflect toward and into sealing engagement with the toroidal sealing bead. The surface of the diaphragm that engages the toroidal sealing bead is formed from a very hard metallic alloy. However adjacent layers of the diaphragm are formed from softer metals.
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Aldridge Lewis L.
Barber Patrick P.
Wu Jing-Chau
Budzyn Ludomir A.
Casella Anthony J.
Hespos Gerald E.
Lee Kevin
Parker-Hannifin Corporation
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