while the diaphragm-isolated spring chamber prevents corrosive system fluids from making contact with the steel-plated alloy spring

The standard EFB24-SR does not include internal auxiliary switches

facilitating both heating and cooling logic

Simplified Installation: Designed for standard bracket mounting with clear terminal markings for efficient field replacement

Resideo V2040DSL25 Straight Body 326058-756 while the diaphragm-isolated spring chamberThe Resideo V2040DSL25 is a professional grade straight pattern thermostatic radiator valve designed for precision temperature regulation in one pipe steam or hot water hydronic systems. Featuring a heavy duty nickel plated bronze body and a 1 inch NPT connection, this valve is the industry standard for replacing manual valves in baseboard or straight run radiator applications. Engineered for the field, the V2040DSL25 utilizes an EPDM adjustable