Electrosteel D]. Pipes and Fittings are available with following types of jointing systems:
– Socket & Spigot Flexible Push-on Joints
– Restrained Joints Push-on Type
– Mechanical Flexible Joints (only fittings)
– Flanged Joint
Socket & Spigot Flexible Push-on Joints
Socket and Spigot Flexible Joints are assembled with synthetic (EPDM/SBR) rubber gaskets of special shape. The gasket has a hard ‘Heel’ and soft ‘Bulb’. In Push-on joint the soft bulb of the rubber gasket is compressed when the spigot is inserted into the socket. The ‘Heel’ locks the position of the gasket and does not allow the gasket to get displaced when the spigot is pushed in. The joint becomes tighter with the increase in internal pressure of water. The rubber is confined in a place and cannot blow out.
Permissible Deflection at Socket and Spigot Joints
Where it is necessary to deflect the pipeline from a straight line, either in the vertical or horizontal plane, to avoid obstructions etc., deflection at joint should not exceed the following:
Electrosteel Ductile Iron Pipe ioints are type tested
Electrosteel’s design of the socket and the rubber gasket ensures guaranteed leak-tight joint through Type Test as per BSEN:545 and ISO:2531 . Type Test is testing the pipe and pipe joint at extreme working conditions (the product and use) to ensure satisfactory performance for a long time.
The recommended Type Tests as per BS EN:545/598, ISO:2531 are:
1. Leak Tightness of Joints to Positive, Negative and Dynamic Internal Pressure.
2. Leak Tightness of Joints to Positive External Pressure.
3. Leak tightness and Mechanical Resistance of Flanged Joints.
4. Test for Abrasion Resistance.
5. Test for Chemical Resistance to Effluents.
The British Standard Institute (BSI) has supervised the type tests and accordingly the ‘KITEMARK’ Licenses have been issued.
Post time: May-15-2024