Siemens Building Technology 257-02031 Control Valve Assembly 326070-701 making it a reliable choice

making it a reliable choice for air service applications requiring a 1/2 inch compressed air regulator with secondary aspiration to maintain a steady setpoint under load

Regulatory Compliance: Meets ASME Section IV and CSA XL21 standards for safety-critical pressure relief

these units are specifically optimized for Johnson Controls digital controllers and VMA series modules to ensure full compatibility with scaling and offset parameters

Streamlined Installation: Designed as a side-mount damper requiring only a 4-inch slot for insertion

Siemens Building Technology 257-02031 Control Valve Assembly 326070-701 making it a reliable choiceFor veteran mechanical contractors managing commercial hydronic systems, the Siemens 257 02031 provides a reliable, field proven solution for precise fluid regulation. As a core component of the Powermite 599 MT Series, this 2 way normally open pneumatic control valve is engineered for terminal units, hydronic heating coils, and chilled water applications. The assembly integrates a high performance 1 2" brass globe valve with a 2 inch pneumatic