... ,3/4"x1/"x18,1"x1/2"x18 Brass Manifold, connection for pex pipe,multilayer pipe, copper pipeWays:2~4Size:3/4 ... "x1/2"x15,1.PPR pipes & fittings; 2.Brass fittings for composite pips,water-heating pipes and brass pipes; 3.Brass ... 1.packing design 2.certificate3.fairs in 2012 brass manifold for pex pipe