Fluid handling – Line condition change responsive valves – With separate connected fluid reactor surface
Patent
1986-06-30
1990-05-15
Rivell, John
Fluid handling
Line condition change responsive valves
With separate connected fluid reactor surface
13750525, F16K 3122
Patent
active
049249045
ABSTRACT:
A pressure regulator, of a type having a spring whose compressive force is a factor of the differential of pressure achieved as to the outlet pressure in comparison to the inlet pressure, and whose adjustment of spring pressure achieves a variation of the pressure differential, with the present concepts providing a screw-type camming feature for easily imposing whatever pre-load is desired on the spring to achieve the desired pressure differential of fluid being dispensed by the regulator. The casing is provided with a window through which a tool may be easily passed to give the rotational torque for this camming effect by which the pressure differential adjustment is achieved; and the camming effect provides axial spring-load adjustment by an easily applied rotational torque to an adjustment plate, or to the abutment plate which provides a relief valve function.
REFERENCES:
patent: 614441 (1898-11-01), Burnett
patent: 2935083 (1960-05-01), Singer
patent: 3848631 (1974-11-01), Fallon
patent: 3890999 (1975-06-01), Moskow
patent: 4015630 (1977-04-01), Contreras
patent: 4020863 (1977-05-01), Fabish
Puritan-Bennett Corporation
Rivell John
Spray Robert A.
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