AccuFlow® Stainless Steel Manifolds are easily assembled with 2 through 12 loops and 3/8 through 3/4 in tubing connections to fit a variety of piping configurations. The Manifold includes 1 in supply and return isolation ball valves with thermometers, 0 to 1.3 gpm flow meters, automatic air vents, fill/drain valves and mounting brackets, allowing for easy installation, quick flow adjustment and performance verification. Actuators are available for maximum zoning potential. Maximum 12 gpm.