Siemens Building Technology 257-02038 Valve Assembly 326058-757 this Robertshaw cold control ensures

this Robertshaw cold control ensures the evaporator is cleared of frost before initiating the next cooling cycle

this combustion air blower includes the necessary ports for pressure switch hose connections

always check your specific damper motor requirements

This model is recognized as the manufacturer-recommended direct replacement for H105K-457 and H105K-457-9942

Siemens Building Technology 257-02038 Valve Assembly 326058-757 this Robertshaw cold control ensuresThe Siemens Building Technology 257 02038 Valve Assembly is a high performance Powermite 599 MT Series solution engineered for precise flow control in HVAC terminal units. This 2 way normally open pneumatic valve features a 1 2 inch NPT forged brass body and brass trim, ensuring durability in hot or chilled water applications such as convectors and fan coil units. With a 2. 5 Cv equal percentage flow characteristic, it provides stable modulating