​Giboult Joint for PVC is a mechanical joint fitting used to connect two PVC pipes or PVC pipes with other types of pipes (HDPE, iron, etc.) without using glue or welding, but through a compression system of gaskets pressed by bolts. Gibault Joint is also called a universal coupling because it is able to accommodate connections between pipes with different diameter tolerances, and is very useful for repairing leaking pipes, emergency connections, or installations that require flexible and fast connections.
Giboult Joint Structure and Components
1. Main Body
Made of ductile iron or carbon steel coated with epoxy.
Functions as a retaining shell and pipe clamp.
2. End Rings / End Flanges
Pressure rings that push the gasket to grip the pipe.
Tightened with bolts to the main body.
3. Rubber Gasket
Usually made of EPDM or NBR rubber.
Seals the joint to prevent leaks.
Compensates for slight pipe displacement (expansion/contraction).
4. Bolts and Nuts
Used to tighten the end rings so the gasket presses evenly against the pipe.
5. Protective Layer
Epoxy/fusion bonded epoxy (FBE) coating on metal parts to prevent corrosion.
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