- Material: Brass
- Colour: Brass
- Warranty: 1 Year
- WRAS approved
Compression Repair Coupling - supplied with a pre-loaded olive in the nut ends.
Suitable for hot & cold domestic water systems.
Compression fittings are useful when working in conditions that are not suitable for soldering.
A compression repair coupling is a type of plumbing fitting used to quickly and easily fix a damaged or broken section of pipe without needing heat (like soldering) or glues. It features a unique design that allows it to "slip" over the end of an existing, stationary pipe section to connect the new segment, making it ideal for working in confined spaces or repairing pipes that cannot be moved.
How it Works
Compression repair couplings use mechanical force to create a secure, watertight, or gas-tight seal.
- Components: The fitting typically consists of a main body, compression nuts on both ends, and an internal component called an "olive" or a "gasket/O-ring".
- Installation: When the compression nuts are tightened, they compress the olive or gasket against the pipe's outer surface and the fitting's body. This action deforms the olive slightly, forming a tight, reliable seal.
Key Features and Benefits
- Flame-Free: No heat (e.g., soldering torch) is required for installation, making it safer for use in tight or sensitive areas.
- Easy Installation: They are relatively simple to install, making them suitable for both experienced professionals and DIYers.
- Versatile: They can be used on wet pipe systems and are compatible with various pipe materials including copper, PEX, low carbon steel, stainless steel, and certain plastics like PVC and MDPE.
- Removable/Reusable: Unlike soldered or glued joints, compression fittings can be dismantled and rebuilt if needed.
- No Stop: The key difference from a standard coupling is the absence of an internal pipe stop (ridge), allowing the fitting body to slide further along one pipe end while the other end is inserted into the repair section.
Installation Steps
- Drain the System: Ensure the water or gas supply is turned off and the pipework is drained.
- Cut the Pipe: Use a pipe cutter to remove the damaged section of pipe, leaving only enough gap for the length of the repair coupling.
- Disassemble the Coupling: Unscrew the compression nuts and slide one nut and the internal olive/gasket onto each of the existing pipe ends.
- Position the Body: Slide the main body of the coupling onto one pipe end, then align the other end and slide the body back so that both pipe ends are inside the fitting.
- Tighten the Nuts: Hand-tighten the nuts initially, then use a wrench to fully tighten, compressing the olive/gasket to create the seal.
Important Considerations
- Avoid Over-tightening: Over-tightening can deform the olive improperly, leading to joint failure.
- No Sealants Needed: Thread sealants like PTFE tape are generally not necessary for compression fitting threads, as the seal is made by the olive/gasket, not the threads.
- Pressure Ratings: Ensure the fitting's pressure and temperature ratings are appropriate for your specific application (e.g., suitable for gas, hot water, cold water).

























