Combination needle flow control and shut-off valve for precision

Details Combination needle flow control and shut-off valve for precision Combination needle flow control and shut-off valve for precision

1976-04-05

1977-12-27

Nilson, Robert G.

Fluid handling

Systems

Flow path with serial valves and/or closures

251122, F16K 104

Patent

active

040649083

ABSTRACT:
A combination flow control and shut-off valve comprising a body having an elongated opening with separated inlet and outlet passages. An elongated valve cartridge is screw threadedly mounted for longitudinal movement within said opening to open and close the connection between the inlet and outlet passages. An elongated needle member is screw threadedly mounted within the valve cartridge and is rotatable to move an elongated tapered needle longitudinally within a cylindrical opening formed in the valve cartridge for precisely controlling the flow of fluid between the inlet and outlet passages. The cartridge is movable independently from the needle member to turn the flow of fluid through the valve completely on and off without affecting the precision flow control setting of the needle.

REFERENCES:
patent: 916163 (1909-03-01), Jettinger
patent: 1527358 (1925-02-01), Hamilton
patent: 2791236 (1957-05-01), Mauer
patent: 3117595 (1964-01-01), Broecker et al.
patent: 3870080 (1975-03-01), Landwehr

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