Watts 0856736 Valve 30067439-890 meaning it is designed to
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Watts 0856736 Valve 30067439 890 meaning it is designed to meaning it is designed to open (break the circuit) at 150°F and close (reset) once the temperature drops by 40°F The Weil McLain 510 218 100 Gauge is a critical instrument for monitoring system conditions in low pressure steam heating applications