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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
- Easy to assemble and disassemble when required
| BOLTLESS RESTRAINED JOINT |
|
Size (DN)
|
Allowable Angular Deflection (Degree)
|
PFA (bar)
For Class K9 or Equivalent class
|
|
80
|
5°
|
64
|
|
100
|
5°
|
64
|
|
125
|
5°
|
64
|
|
150
|
5°
|
55
|
|
200
|
4°
|
44
|
|
250
|
4°
|
39
|
|
300
|
4°
|
37
|
|
350
|
3°
|
32
|
|
400
|
3°
|
30
|
|
450
|
3°
|
30
|
|
500
|
3°
|
30
|
|
600
|
3°
|
30
|
|
700
|
3°
|
30
|
|
800
|
3°
|
25
|
|
900
|
3°
|
25
|
|
1000
|
3°
|
25
|
# To use this system for other class of pipes, the manufacturer may be contacted
