Siemens Building Technology 257-02056 Valve Assembly 318518-761 How do I adjust the

How do I adjust the gas flow on this specific valve

What size air line is required for the actuator

The S97009281 assembly features precise mounting apertures for the 9417DN heater fan

Fail-Safe Operation: The normally open 2-way valve configuration ensures continuous flow when the coil is de-energized

using it on non-specified units is not recommended due to specific drain port offsets and mounting points

Siemens Building Technology 257-02056 Valve Assembly 318518-761 How do I adjust theThe 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