Thermal relief valve

Details Thermal relief valve Thermal relief valve

1998-12-30

1999-10-19

Bennett, Henry

Automatic temperature and humidity regulation

Thermostatic

In fluid controlled

236 92C, 236100, 236 99J, 236 99K, F16K 1700

Patent

active

059674105

ABSTRACT:
A thermal relief valve to be mounted in a fluid flow line. The valve comprises a valve body and a valve actuator movable in a bore defined by a bore wall in the valve body from a sealing position in which the actuator sealingly engages a valve seat to block flow through the valve to a non-sealing position. The valve actuator is responsive to the temperature of the fluid exceeding a predetermined temperature to move to its non-sealing position. The relief valve has an actuator body configured to have first exterior surfaces sized for a close clearance fit with the bore wall at spaced locations around the actuator body to prevent substantial lateral shifting of the body relative to the bore wall, and second exterior surfaces which extend between the first exterior surfaces and which are spaced farther from the bore wall to define flow passages to permit the flow of fluid past the actuator when the valve actuator moves to its non-sealing position.

REFERENCES:
patent: 2505321 (1950-04-01), Brutocao et al.
patent: 2731207 (1956-01-01), Mueller et al.
patent: 4285465 (1981-08-01), North
patent: 5641119 (1997-06-01), Simonette
Two Drawings, numbered TRV25-0AA and Sketch 5, entitled "Thermal Relief Valve," Control Devices, Inc., admitted by applicant to be prior art.

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