REUSABLE PRESSURE RELEASE VALVE

• US 3,780,759 A
• Filed: 04/10/1972
• Issued: 12/25/1973
• Est. Priority Date: 04/10/1972
• Status: Expired due to Term

• Current Assignee: Daniel I. Yahle
• Original Assignee: Daniel I. Yahle
• Inventors: Yahle, Daniel I.
• Primary Examiner(s): Cline, William R.
• Application Number:
  US05/242,553
• Time in Patent Office: 624 Days
• Field of Search: 137/467,456
• US Class Current: 137/467
• CPC Class Codes: F16K 17/042 with locking or disconnecting arrangements
• CPC Class Codes: Y10T 137/7734 Fluid opened valve requiring reset

Abstract

A reusable release valve for use in checking fluid systems, in areas such as missile stage controls, and to dump the fluid at a predetermined pressure. The system fluid causes pressure on a piston to release a latching mechanism whereby the system fluid is dumped through the release valve. After fluid dumping the valve is disassembled and reset for reuse.

Claims

1. A reusable pressure release valve for use in checking fluid systems and to dump the fluid at a predetermined pressure, said valve comprising:

a body having inlet and outlet ports for passing fluid therethrough, a chamber in said body;

a piston in said body having one side closing said inlet port;

a retainer housing moveably mounted in said chamber on the opposite side of said piston, said retainer housing including means for exerting a predetermined biasing force, a plunger supported by said retainer housing for exerting said biasing force on said opposite side of said piston, said plunger extending away from said inlet port;

an end cap connected on one end of said body opposite said inlet port; and

latching means located between said end cap and said plunger to restrain movement of said retainer housing until said predetermined biasing force is overcome by the pressure of said fluid, said piston moving a predetermined degree of travel to cause release of said latching means and allow fluid dumping.

2. A reusable pressure release valve as set forth in claim 1 wherein said means for exerting a predetermined biasing force pressure includes a gland nut adjustably connected with said plunger and slidably mounted in said retainer housing, and a spring located in said retainer housing between said gland nut and said retainer housing to load said plunger and apply the predetermined biasing force on said piston.

3. A reusable pressure release valve as set forth in claim 2 wherein said latching means includes recesses provided in said cap, a release pin connected with said retainer housing and surrounding and provided with openings therein, and latching balls placed in said openings for cooperation with said recesses to secure said retainer housing to said end cap, and said plunger being provided with recesses for unlatching said balls when said plunger recesses are moved into alignment with said balls.