Siemens Building Technology 257-02039 Valve Assembly 319847-401 including the ZF

including the ZF

which minimizes slippage and reduces vibration for quieter operation in air handling units and compressors

the AAE series valves typically feature an adjustment screw

Is this part compatible with other Laars boilers like the NeoTherm

Is the Danfoss 067N9210 bi-flow capable

Siemens Building Technology 257-02039 Valve Assembly 319847-401 including the ZFThe 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