STANDARD joint
The STANDARD joint is a push-in joint. The seal is assured during assembly by radial compression of an elastomer joint gasket. Their main features are:
– ease and rapidity of installation,
– high pressure resistance,
– possibility of gap and angular deflection.
Range: DN 60 to 2 000
Principle
The seal is provided by radial compression of the joint gasket, simply achieved during assembly by introduction of a spigot into the socket.
Description
The socket chamber contains:
– a deep housing with an annular anchor groove for the gasket,
– an annular cavity allowing pipe angular and longitudinal movements.
The gasket has:
– an anchoring heel,
– a bulky body with a centring chamfer.
Range
Pipes: DN 60 to 2,000.
Fittings: DN 60 to 2,000.
Applications
Buried pipelines.
High pressures.
Laying below the water table.
These joints can also be used above ground because of their ability to accommodate expansion and contraction movements.
Performances
Pressure resistance
The STANDARD joint is designed so that the contact pressure between the gasket and metal increases as the water pressure increases. A perfect seal is thus guaranteed.
When tested to destruction the pipe bursts before there is any joint leakage.
A feature of the STANDARD joint is its resistance to external pressure : resistant to 3 bars (30 metres head). Please consult us for higher pressures.
| DN | Class | PFA | PMA | PEA |
|---|---|---|---|---|
| Allowable operating pressure bar | Allowable maximum pressure bar | Allowable test pressure bar | ||
| DN 60 to DN 300 | C40 | 40 | 48 | 53 |
| DN 350 to DN 600 | C30 | 30 | 36 | 41 |
| DN 700 to DN 1000 | C25 | 25 | 30 | 35 |
| DN 700 to DN 1000 | C30 | 30 | 36 | 41 |
| DN 1100 to DN 2000 | C25 | 25 | 30 | 35 |
Angular deflection and gap
The degree of angular deflection afforded by the STANDARD joint allows great flexibility in design and laying, enabling elimination of some bends.
The STANDARD joint accepts gap, enabling it to accommodate small expansion and contraction movements.
The gap must be regarded as a safeguard and not be used to accommodate repeated backward and forward movements.
The degree of angular deflection and withdrawal afforded by the STANDARD joint gives it an excellent performance in cases of ground movement or undermining by soil scouring.
| DN | Gap | DN | Gap | |||
|---|---|---|---|---|---|---|
| aligned | deflected | aligned | deflected | |||
| mm | mm | mm | mm | |||
| 60 | 36 | 30 | 600 | 46 | 2 | |
| 80 | 37 | 29 | 700 | 99 | 41 | |
| 100 | 33 | 22 | 800 | 100 | 34 | |
| 125 | 35 | 22 | 900 | 98 | 25 | |
| 150 | 38 | 23 | 1000 | 98 | 18 | |
| 200 | 42 | 22 | 1100 | 115 | 26 | |
| 250 | 41 | 17 | 1200 | 115 | 17 | |
| 300 | 38 | 9 | 1400 | 96 | 20 | |
| 400 | 42 | 12 | 1600 | 106 | 19 | |
| 450 | 43 | 9 | 1800 | 103 | 21 | |
| 500 | 43 | 6 | 2000 | 101 | 28 | |
* Values given for STANDARD pipes
This joint complies with the technical specifications of standard EN 545 and ISO 2531.
Performance tests advised by this standard have been performed.
The gasket complies with standard EN 681.1.