To ensure optimal technical performance and long-term reliability

quiet operation while providing superior tolerance to slipping and minor misalignment compared to raw-edge alternatives

or debris between the coil and the valve stem preventing a solid magnetic seat

making it a direct-fit solution for many modern hydronic systems

this specific unit is engineered for two-stage operation

Functional Devices RIBMNU1S Relay R-407A To ensure optimal technical performanceThe Functional Devices RIBMNU1S Relay is a professional grade 15 Amp pilot relay designed for high reliability switching in BAS, HVAC, and lighting control applications. This track mounted modular relay features a versatile triple voltage coil, allowing for seamless integration into systems utilizing 10 30 Vac Vdc or a standard 120 Vac power source. Engineered for long term field performance, it utilizes a SPST (Single Pole Single Throw) contact