Control valve

Details Control valve Control valve

1993-04-21

1994-04-19

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

7386153, 137843, 251902, F61K 1514

Patent

active

053037383

ABSTRACT:
A control valve includes a tubular member and a truncated conical helix spring received in the tubular member. A diverging open end of the helix spring is fixed adjacent to a first open end of the tubular member. The helix spring has a truncated tapered open end opposed to the diverging open end. A plug member is fixed in the truncated tapered open end in order to close the truncated tapered open end. The truncated conical helix spring confines a truncated cone-shaped chamber and is formed of a plurality of turns which are wound in a watertight manner. The helix spring extends and forms a plurality of clearances among the turns under a predetermined axial tension force. The tubular member has two connecting outlet ports which are to be connected respectively to the ends of a transducer in order to measure the differential pressure and thereby measure the flow rate of the fluid which passes through the tubular member.

REFERENCES:
patent: 2125435 (1938-08-01), Erling
patent: 2850897 (1958-09-01), Main
patent: 3063461 (1962-11-01), Rudolph
patent: 3403556 (1968-10-01), Koester
patent: 3610279 (1971-10-01), McIntosh
patent: 4006634 (1977-02-01), Billette

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