www.pmmag.com/articles/92276-distribution-manifold
Distribution Manifold
October 28, 2008
Caleffi introduces the TwistFlow™ Distribution Manifold updating the already-proven 668 series with built-in sight flow gages. These new sight-flow gages are integrated with adjustable balancing valves allowing accurate 1/4- to 2-gpm flow rate adjustment to each circuit by simply reading the flow rate on the integral graduated scale. This simplifies and speeds up circuit calibration without cumbersome reference graphs.
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