Applications: Isiflo coupling system for plastic pipes gives a tight and end-load resistant connection and can be used on: · MDPE: BS6572 and BS6730 · Black poly: All classes, and BS3284 · Copper: Table X & Y · Lead: BS602 and BS1085 · Galvanised steel: BS1387, BS3601 and BS3602 part 1 & 2. (only type 142) · PVC: BS3505 · PEX: support insert has to be used