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Key Benefits: Direct OEM Compatibility: Specifically engineered as the EF19ZE120 replacement to ensure precise electrical matches for Carrier and Bryant systems
meaning the internal battery is integrated to maintain the memory state independently of the main board power
ensuring a perfect 1/2" hub seating every time
ensuring seamless interlock wiring and mounting alignment
Siemens Building Technology 277-03170 Valve Assembly 322838-753 Key Benefits: Direct OEM Compatibility:The Siemens 277 03170 Valve Assembly is a heavy duty 2 way normally open globe valve engineered for precise modulating control in hydronic heating and cooling systems. Built with a rugged UNS CA 844 bronze body and durable brass trim, this 2 inch NPT assembly is rated for ANSI Class 250 applications, supporting a 40 Cv flow capacity with an equal percentage flow characteristic. This ensures linear heat output even during fluctuating pressure drops,
