Siemens Building Technology 257-02056 Valve Assembly 322056-301 and supports systems with capacities

and supports systems with capacities up to 6 tons

1 seconds up to 999 hours across four selectable scales

and 4YC series

Reliable Construction: Features a rugged 42 frame and sleeve bearings for quiet

Its compact design facilitates a direct swap

Siemens Building Technology 257-02056 Valve Assembly 322056-301 and supports systems with capacitiesThe Siemens 257 02056 is a professional grade 2 way normally open pneumatic valve assembly engineered for precise proportional control in heating and cooling applications. This 1 2 inch NPT x Union Male unit features a forged brass body and stainless steel trim, ensuring high durability and resistance to scaling in demanding hydronic systems. With a 2. 5 Cv rating and equal percentage flow characteristic, it provides stabilized heat output even under