Ductile Iron Pipes - Boltless Restrained Joint (Electrolock Joint)
Features
Can withstand very high pressure
Needs factory manufactured long socket pipes with two chambers – one for sealing and the other for restraining axial movement
The water sealing is done by Push-on gasket and restraining is done by Weld Bead and Locking Bar
Normal Push-on joint gasket is to be used for sealing
After assembly, the locking bars in parts are inserted in the Locking Chamber. The weld bead on the spigot gets locked with the locking bar against separation force
Can be used for trenchless applications where all pipes with such joints are used in the trenchless portion