Combination diaphragm and groove coupler seal for automatic cont

Details Combination diaphragm and groove coupler seal for automatic cont Combination diaphragm and groove coupler seal for automatic cont

1997-04-03

2000-06-27

Chambers, A. Michael

Valves and valve actuation

Fluid actuated or retarded

Flexible wall expansible chamber reciprocating valve actuator

251331, F16K 31126

Patent

active

060796928

ABSTRACT:
A combination diaphragm and seal device for valves which replaces a conventional bolt down diaphragm, and which permits automatic control valves and other valves to be closured by an industry standard groove coupler rather than a plurality of bolts through an external flange on the valve body. The diaphragm portion has a flat circular section with a central bore. This portion may be reinforced by a fabric layer and may or may not include a convolute for extra flexibility. The diaphragm portion is overlaid within and across the interior diameter of the groove coupler seal portion at about the midpoint thereof.

REFERENCES:
patent: 3502297 (1970-03-01), Wardrup
patent: 4109624 (1978-08-01), Washio et al.
patent: 4720079 (1988-01-01), Iizuka et al.

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