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Belimo B349 Valve Els PW 17895 What is the purpose ofThe Belimo B349 is a high performance 2 inch NPT 3 way ball valve designed for precise mixing or diverting in commercial HVAC and hydronic systems. This 46 Cv valve features an A port equal percentage flow characteristic and a B port modified for constant common port flow, ensuring stable control and preventing pressure surges during modulation. Engineered with a nickel plated forged brass body and stainless steel ball and stem, the B349 provides