Water manifold with double valves: 1.Scientific design 2.ISO9001,CE approved 3.Long service ... delivery 1.Brief introduction♦ Product name:Water manifold with double valves♦ Raw material:DZR,CW617,CZ132,C37700,CW614N,Hpb58-2,Hpb59 ... 24 hours! 2012 Popular DH1''G1620 water manifold with double valves for underfloor heating