Siemens Building Technology 257-02056 Valve Assembly 322056-301 If you are experiencing seat

If you are experiencing seat leakage or inconsistent flow control despite a functioning actuator

and 4YC series

and supports systems with capacities up to 6 tons

Its compact design facilitates a direct swap

Crafted with a durable gray-painted cast iron mounted bearing housing and a zone-hardened 52100 steel inner ring

Siemens Building Technology 257-02056 Valve Assembly 322056-301 If you are experiencing seatThe 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