Siemens Building Technology 257-02039 Valve Assembly 318820-201 you must check the factory

you must check the factory model number stamped on your original pilot

this unit delivers a nominal 1050 RPM across 4 speeds

ECM Efficiency: Utilizes variable-speed technology to optimize energy consumption and maintain consistent CFM across various static pressures

supporting adjustable superheat settings to maximize evaporator efficiency

Siemens Building Technology 257-02039 Valve Assembly 318820-201 you must check the factoryThe Siemens Building Technology 257 02039 is a professional grade 2 way normally open pneumatic valve assembly from the Powermite 599 Series, engineered specifically for the proportional control of hot or chilled water in terminal units like convectors and fan coils. This unit features a 1 2 inch forged brass body with a durable brass trim, utilizing an NPT x Union Male connection for simplified fieldwork and fitting. With a 2. 5 Cv flow coefficient