Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1985-07-12
1986-08-26
Nilson, Robert G.
Fluid handling
Line condition change responsive valves
Direct response valves
137847, 137850, F16K 1516
Patent
active
046076638
ABSTRACT:
A tide gate valve has staggered pads embedded therein to provide sufficient strength to resist sagging and inversion, and to provide sufficient flexibility to promote an easy opening of the valve.
REFERENCES:
patent: Re27399 (1972-06-01), Urso
patent: 187411 (1877-02-01), Painter
patent: 3422844 (1969-01-01), Grise
patent: 4492253 (1985-01-01), Raftis
Merritt George W.
Raftis Spiros G.
Nilson Robert G.
Red Valve Co. Inc.
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