SKU: 96930520569
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The McDonnell & Miller 93-M is a commercial-grade combination low water cut-off and pump controller designed specifically for steam boiler applications
Using a 240V HT coil on a 120V circuit will cause the valve to fail to actuate
The heavy-duty wiring terminals are engineered for a positive electrical connection
Replacing a faulty box is a standard solution for furnace pressure switch failure related to the secondary heat exchanger
Bi-Flow Capability: Engineered for versatility in R-22 heat pump applications
Siemens Building Technology 656-0017 Valve 318423-701 The McDonnell & Miller 93-MThe Siemens Building Technology 656 0017 is a heavy duty 1 2 inch pneumatic radiator valve engineered for proportional control in two pipe steam or hot water systems. This normally open (N. O.) assembly features an angle union valve body constructed from durable brass, designed specifically for terminal unit applications like convectors, fan coil units, and baseboard radiation. With a 2. 1 Cv capacity and a standard 3 8 psi spring range, this valve