Socket Fusion Reducing Coupling SDR11 4" IPS X 3" IPS
Socket Fusion Reducing Coupling, Example A x B = Female x Female, PE 3608/3408, PE 100, ASTM D-2683, ISO 9001:2008, NSF/ANSI 61
Rahn Plastics Pressure Rating Chart
Rahn Plastics Resin Properties HDPE (Black)