Siemens Building Technology 257-02056 Valve Assembly R-407C Engineered for low energy consumption

Engineered for low energy consumption when paired with compatible bi-stable solenoid coils

this PSC (Permanent Split Capacitor) motor is designed for continuous running duty in demanding industrial and light commercial environments

Motor Protection: Brushless DC technology includes electronic stall detection to prevent hardware failure at end-of-stroke

With a physical length of 11

The brass trim and high-temperature packing are rated for fluid temperatures up to 284°F

Siemens Building Technology 257-02056 Valve Assembly R-407C Engineered for low energy consumptionThe 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