Title:
高圧作動型金属座着ダイヤフラム弁
Document Type and Number:
Japanese Patent JP4220577
Kind Code:
B2
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.
Inventors:
C. Jin-Chow
Barber Patrick Pea
Aldridge Lewis Elle
Barber Patrick Pea
Aldridge Lewis Elle
Application Number:
JP51853998A
Publication Date:
February 04, 2009
Filing Date:
October 10, 1997
Export Citation:
Assignee:
Parker Hannifin Corporation
International Classes:
F16K7/12; F16J3/02; F16K7/14; F16K7/16; F16K7/17; F16K41/12
Domestic Patent References:
| JP8004918A | ||||
| JP4191576A | ||||
| JP5026357A | ||||
| JP57096803U |
Attorney, Agent or Firm:
Yoshiteru Oshida