• Fixed port venturi orifice balancing valve Flow measurement function independent of stem and ball position Dual Schrader® style pressure ports allow for easy differential pressure gauge attachment Allows Accu-Flo to function reliably both as a balancing valve and suitable for shut-off service in closed hot or cold water systems Valve can be installed in any position All brass wetted parts resist corrosion for reliable operation Blowout-proof stem Built-in drain port Shipped ready for installation PTFE seats prevent leakage and assure smooth, quiet, dependable operation Easy-to-read, memory stop is tamper-resistant and has a fast and accurate resetting if shut-off feature is used, calibrated to aid in pre-balancing flow loop

With Taco Accu-Flo balancing valves, you will experience greater balancing accuracy than ever before. Most conventional balancing valves use a variable orifice that delivers poor balancing accuracy, high-pressure drops, low regains and an inability to read low flows. The Taco Accu-Flo balancing valves use a modified venturi design, instead, to deliver four to 5x greater accuracy. Flow measurement is independent of stem and ball position and the tamper-resistant memory stop provides accurate resetting. With calibrated nameplate for presetting, all brass interior parts, precision machining and 100% factory testing, these valves are the highest quality fixed port venturi balancing valve on the market today.