The Lubrizol Corp., in partnership with Colonial Engineering, expands its line of cost-effective and easy-to-install FlowGuard Gold pipes and fittings with the addition of the new FlowGuard MultiPort. The FlowGuard MultiPort provides plumbers and developers for multifamily and hotel projects with an innovative solution for mini-manifold plumbing system designs with FlowGuard Gold CPVC pipe and fittings, the company notes.