Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1991-03-06
1993-01-12
Rivell, John
Fluid handling
Line condition change responsive valves
Direct response valves
137385, 1375563, 251 83, 251285, F16K 1506, F16K 3700, F16K 1518
Patent
active
051781859
ABSTRACT:
A suction inlet pump, useful with pumper firetrucks, has a floating valve element which is normally biased closed by a spring. The motion of the floating valve is also positively determined by a cam engaging a shaft extending from the floating valve element and aligned with the cam. The cam is moved from a first position that positively holds the floating valve element completely closed to a second position which allows the floating valve element to fully open. By selectively positioning the cam between the completely closed and fully opened positions, the amount of water entering the valve may be selected so that the valve functions properly for the particular use to which it is put. The suction inlet valve includes a lockable operating handle which is used to rotate and position the cam. An indicator on the exterior of the valve housing indicates the position of the cam. The suction inlet valve is useable for both hydrant and draft applications and is adjustable to accommodate situations in which hydrant pressure is very high, as well as situations where there are a number of hoses served by a pumper, and situations in which the pumper is served by a sequence of shuttling tanker trucks.
REFERENCES:
patent: 2641437 (1953-06-01), Jay et al.
patent: 3875963 (1975-04-01), Buck et al.
patent: 3983899 (1976-10-01), Graham et al.
patent: 3987812 (1976-10-01), Nelson
patent: 4580596 (1986-04-01), Stehling
North Grady
Stehling Henry J.
Hydra-Shield Manufacturing Inc.
Rivell John
LandOfFree
Suction inlet valve for fire truck pumpers does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Suction inlet valve for fire truck pumpers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Suction inlet valve for fire truck pumpers will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1213937