Thermostatic self-powered drain valve

Details Thermostatic self-powered drain valve Thermostatic self-powered drain valve

F - Mech Eng,Light,Heat,Weapons

16

K

236/2

F16K 17/38 (2006.01) E03B 7/12 (2006.01)

Patent

CA 1116145

R. S. Shelton THERMOSTATIC SELF-POWERED DRAIN VALVE Abstract of the Disclosure A water or other fluid containing system is protected by a thermostatically controlled drain valve having input, output, drain and control ports. A slideable barrier within the valve selectively directs the flow within the valve between the ports. A small coupling orifice through the barrier allows equal static pressures to develop on opposite sides of the barrier, and a thermosensitive relief mechanism at the control port relieves the pressure on one side of the barrier when ambient temperature drops below a predetermined level. Unequal pressures upon the barrier shift the barrier, redirecting the flow within the valve.

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