Siemens Building Technology 656-0017 Valve 318423-701 Replacing a faulty box is

Replacing a faulty box is a standard solution for furnace pressure switch failure related to the secondary heat exchanger

The heavy-duty wiring terminals are engineered for a positive electrical connection

Operating on a standard 24V HVAC control circuit

ensure you are landing on the correct resistive input terminals to avoid induced voltage issues

Siemens Building Technology 656-0017 Valve 318423-701 Replacing a faulty box isThe 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