3/4" CrimpRing™ End x 3/4" CrimpRing™ End “Flow-Through” Manifolds Flow-through manifolds have 3/4" brass CrimpRing™ fittings at both ends. This allows water supply to continue through the manifold to the next group of fixtures. Available with 1/2" brass CrimpRing™ fittings‚ with or without 1/4-turn brass mini ball valves (MBV)‚ in sizes from M3 to M12. Branches are 2" O.C. Manifolds are sold individually. Order one for hot and one for cold.