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these units are specifically optimized for Johnson Controls digital controllers and VMA series modules to ensure full compatibility with scaling and offset parameters
Regulatory Compliance: Meets ASME Section IV and CSA XL21 standards for safety-critical pressure relief
How do I test the defrost sequence on this board
refer to York service bulletin 50
Siemens Building Technology 257-02031 Control Valve Assembly 326070-701 these units are specifically optimizedFor 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
US$ 174500.00
US$ 174500.00
US$ 299500.00