Fluid handling – Line condition change responsive valves – With separate connected fluid reactor surface
Patent
1986-07-31
1988-02-16
Nilson, Robert G.
Fluid handling
Line condition change responsive valves
With separate connected fluid reactor surface
137504, 1375147, F16K 1506
Patent
active
047248661
ABSTRACT:
A speed control valve is formed with a pair of cooperating inversely operating dashpots to control movement of a valve element in either direction so as to prevent sudden actuation upon change in fluid velocity or oscillation due to fluid flow changes. Bleeding of fluid into and out of the dashpots controls the speed of movement of the valve element.
REFERENCES:
patent: 2318963 (1943-05-01), Parker
patent: 2583295 (1952-01-01), Greer
patent: 3741241 (1973-06-01), Jackson
Bates Howard J.
Childs Willard D.
Matsuda Eugene S.
Nayler Douglas W. J.
Nilson Robert G.
NL Industries Inc.
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