Water shut-off valve

Details Water shut-off valve Water shut-off valve

1987-04-10

1988-05-10

Nilson, Robert G.

Fluid handling

Self-proportioning or correlating systems

Self-controlled branched flow systems

137466, 1375125, 137551, F16K 2104

Patent

active

047428414

ABSTRACT:
A coolant system and control valve used in a circuit for cooling spot welding tips. The control valve normally passes coolant to and from the tips. Should a break in the coolant flow occur because of a breakdown of one or more of the tips, the control valve will shift to close the normal coolant loop and divert coolant from a pressure source to a tank until a repair is made. A switch indicator can be utilized for visual observation of a break and also a flow indicator is provided on the valve body to indicate normal coolant flow.

REFERENCES:
patent: 2013846 (1935-09-01), Borel
patent: 3476133 (1969-11-01), Stedfeld
patent: 4446890 (1984-05-01), Simpson
patent: 4650152 (1987-03-01), Doutt

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