Siemens Building Technology 257-02056 Valve Assembly 322056-301 Using it with Propane without

Using it with Propane without a certified conversion kit can lead to hazardous operating conditions

Whether you are configuring it as a primary and/or secondary sensor

and supports systems with capacities up to 6 tons

Can I use this on a 30mV thermocouple system

4 inches in length

Siemens Building Technology 257-02056 Valve Assembly 322056-301 Using it with Propane withoutThe 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