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While this specific model is for 2 connections
preventing ignition failure due to blocked flues or intake pipes
this precision-cut gasket provides the exact fit required to eliminate bypass air and maintain correct combustion parameters
or monitoring blower discharge pressures
Featuring a corrosion-resistant finish
Belimo B278 Valve 321042-401 While this specific model isThe 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,
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