This 3/4-inch black poly coupling is from Everflow. It is a Pex Type-A Expansion F1960 Fitting. Everflow part number B-FPPCP0034.
Benefits of Type-A Fittings:
• Most flexible
• Tightest bend radius
• Least likely to kink
• Thermal, Elastic, and Shape memory
• Highest degree of crosslinking
• Resistant to crack propagation
EC Part Number: #41074
Manufacturer Number: B-FPPCP0034
Manufacturer: Everflow


