Accession Number:

ADD018808

Title:

High Pressure Enabled, Low Pressure Activated Automatic Fluid Control Valve

Descriptive Note:

Patent, Filed 5 Sep 95, patented 9 Dec 97

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

Report Date:

1997-12-09

Pagination or Media Count:

9.0

Abstract:

A simple and highly reliable automatic valve is disclosed which is enabled by being subjected to a predetermined pressure and actuated as pressure is reduced from that pressure. A pressure differential of several orders of magnitude between enablement pressure and actuation pressure can be obtained by providing non-linear or plural springs which oppose fluid pressure against a reciprocable piston. The piston includes an aperture or passage which seals against a surrounding bore when the valve is closed. The piston is maintained in a position where the aperture or passage is sealed against the bore by a latch. The latch comprises a band spring held in position by a protrusion on the piston and released when the piston is moved by a predetermined fluid pressure. Fine adjustment of both enablement and actuation pressures is provided.

Subject Categories:

  • Pumps, Filters, Pipes, Tubing, Fittings and Valves

Distribution Statement:

APPROVED FOR PUBLIC RELEASE