Pentair TR100C Inlet Upper Piping Assembly (156344) zurnwilkins The Pentair C76-12 pump volute

The Pentair C76-12 pump volute is designed for compatible D-Series cast iron pump applications where the main volute housing needs replacement

A check valve is useful because it helps prevent reverse flow in the system

1-1/4 inch hole size with 1-1/2 inch face diameter

That visual detail matters because these barrels are not hidden parts

and this Maytronics Dolphin version uses the 99954226-R1 reference

Pentair TR100C Inlet Upper Piping Assembly (156344) zurnwilkins The Pentair C76-12 pump voluteThis genuine Pentair Pool Products inlet upper piping assembly, part 156344, is used inside compatible TR100C sand filter systems to route incoming water through the correct internal path. A properly fitted piping assembly is important for balanced distribution and dependable filter operation. Use this replacement when internal piping is cracked, damaged, or removed during a major filter rebuild. Match the TR100C model and connection layout before