Siemens Building Technology 257-02056 Valve Assembly R-407C this PSC (Permanent Split Capacitor)

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

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

or pilot light operation within NEMA rated motor starters and contactors

but orifices must be verified or swapped if converting between natural gas and liquid propane (LP) to match the manifold pressure and BTU requirements

Siemens Building Technology 257-02056 Valve Assembly R-407C this PSC (Permanent Split Capacitor)The 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