Back pressure inducer

Details Back pressure inducer Back pressure inducer

1982-04-23

1984-12-04

Schwadron, Martin P.

Fluid handling

Line condition change responsive valves

Direct response valves

137536, 137540, 13754313, 13754315, 251333, F16K 1506, F16K 1704

Patent

active

044858442

ABSTRACT:
A back pressure inducer and check valve is disclosed for use with a fluid system having inlet passageway, an outlet passageway and in which fluid flows from the inlet and to the outlet passageway. The back pressure inducer comprises a valve seat secured to the system and having a fluid port fluidly between the inlet and outlet passageways. A valve member is movable between a closed and open position to variably open the fluid port while a spring urges the valve member towards its closed position. Cooperating conical surfaces on the valve member and valve seat form an annular passageway when the valve member is in its open position to produce controlled pressure drops between the inlet and outlet conduit over a wide range of fluid flow rates.

REFERENCES:
patent: 1385932 (1921-07-01), Stayman
patent: 2197148 (1940-04-01), Hasbrouck
patent: 2809660 (1957-10-01), Becker
patent: 2943639 (1960-07-01), Smith
patent: 3661175 (1972-05-01), Tillman
patent: 4350179 (1982-09-01), Bunn et al.

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