Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1990-07-09
1991-08-20
Nilson, Robert G.
Fluid handling
Line condition change responsive valves
Direct response valves
137524, 137535, 239126, F16K 1706
Patent
active
050405632
ABSTRACT:
An adjustable air pressure valve for placement in a compressed air hose. Positioning a knob determines the pressure exerted by a spring on a valve member which allows air above a predetermined pressure to escape from the hose to the atmosphere. The knob is incrementally moveable to provide incremental pressure changes.
REFERENCES:
patent: 1503663 (1924-08-01), Price
patent: 1582928 (1926-05-01), Hoag
patent: 2735669 (1956-02-01), Seiler
Nilson Robert G.
The DeVilbiss Company
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