Siemens Building Technology 257-02045 Valve Assembly R-134A This unit features external pressure

This unit features external pressure equalization with a 1/4 inch flare connection

It is rated for a maximum inlet pressure of 2 PSI and features a positive dead-end lock-up (PDEL) capability

Durable Construction: High-temperature ceramic base prevents electrical leakage

or loss of inverter output

ensuring the assembly meets the manufacturer’s technical tolerances

Siemens Building Technology 257-02045 Valve Assembly R-134A This unit features external pressureThe 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