Combination diaphragm and groove coupler seal for automatic control valves
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 27, 2000
Grant Date -
N/A
app pub date -
Apr 3, 1997
filing date -
Apr 3, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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