Belimo B278 Valve 318423-701 The "BX" suffix simply denotes

The "BX" suffix simply denotes the boxed retail packaging from the manufacturer

Versatile Primary Tap: Rated for both 208VAC and 240VAC primary inputs to suit various field power supplies

and running times to meet specific system requirements

Whether you are servicing a standing pilot system or a spark-to-light configuration

Belimo B278 Valve 318423-701 The "BX" suffix simply denotesThe Belimo B278 is a high performance 3 inch 2 way characterized control valve (CCV) designed for precise hydronic regulation in demanding commercial HVACR applications. This 130 Cv valve features a nickel plated forged brass body and robust stainless steel ball and stem, ensuring long term reliability in chilled or hot water systems. Engineered with a specialized TEFZEL characterizing disc, the B278 provides an equal percentage flow characteristic,