Siemens Building Technology 257-02041 Valve Assembly 320788-703 always calculate the drive velocity

always calculate the drive velocity before installation

it is highly recommended to replace the entire motor and module combo to ensure internal winding integrity and avoid compatibility issues between old and new components

allowing for direct integration into header piping systems without compromising the seal

While the 8210 series covers many media types

Siemens Building Technology 257-02041 Valve Assembly 320788-703 always calculate the drive velocityThe Siemens Building Technology 257 02041 Valve Assembly is a contractor grade solution for precise hydronic control in terminal units and convective applications. This 2 way normally open valve features a 1 2 inch NPT connection and a 4. 0 Cv rating, utilizing a modified equal percentage flow characteristic to ensure linear heat transfer and stable temperature regulation. Built with a robust forged brass body and durable brass trim, the assembly is