Siemens Building Technology 277-03170 Valve Assembly 321042-401 Replacing a fouled or corroded

Replacing a fouled or corroded pilot assembly is essential for preventing nuisance lockouts and ensuring efficient combustion cycles

Reliable Venting: Efficiently purges toxic combustion byproducts to maintain indoor air quality and safety

ensuring the actuator stroke is correctly calibrated to the valve seat is crucial for preventing bypass leakage

For technicians troubleshooting a "GV Relay Fail" or ignition lockout

Simplified Wiring: Includes a built-in transformer to power internal circuitry and clear terminal block connections for faster field installation

Siemens Building Technology 277-03170 Valve Assembly 321042-401 Replacing a fouled or corrodedThe Siemens 277 03170 Valve Assembly is a heavy duty 2 way normally open globe valve engineered for precise modulating control in hydronic heating and cooling systems. Built with a rugged UNS CA 844 bronze body and durable brass trim, this 2 inch NPT assembly is rated for ANSI Class 250 applications, supporting a 40 Cv flow capacity with an equal percentage flow characteristic. This ensures linear heat output even during fluctuating pressure drops,