Preso offers 2 type of balancing valves for HVAC systems: B+ and C+. The B+ and C+ Valves offer 2% accuracy and are available in sizes from 1/2" (12 mm) to 10" (254 mm), with sweat, FNPT, flanged or grooved-end connections. Valve options include pressure and temperature ports, quick-disconnect fittings, read-out gages and transmitters.
