Siemens Building Technology 257-02045 Valve Assembly R-134A Direct OEM Replacement: Specifically designed

Direct OEM Replacement: Specifically designed to replace the 18580200 belt with a precise C-Link fit

or loss of inverter output

This general service solenoid is engineered for high-cycle performance in applications where the valve must remain open during power loss or for extended periods without energizing the coil

System Safety: Provides a dedicated HVAC service disconnect to isolate electricity during vital equipment inspections

Siemens Building Technology 257-02045 Valve Assembly R-134A Direct OEM Replacement: Specifically designedThe Siemens Building Technology 257 02045 is a professional grade 2 port pneumatic control valve assembly designed for high accuracy regulation of hot or chilled water in terminal units like convectors and fan coils. As part of the Powermite 599 MT Series, this 3 4" NPT x Union Male assembly features a normally open configuration and a forged brass body with durable brass trim. Engineered for a 6. 3 Cv flow capacity, it utilizes a modified equal