Supreme Compression Coupling 20mm – Reliable PE Pipe Joining for Irrigation Systems
Are you looking for premium components built to withstand high pressure and tough weather conditions? The Supreme Compression Coupling 20mm, available at MB Irrigation, is a heavy-duty straight coupler designed for both professional and domestic automatic watering systems.
This fitting allows you to instantly connect two lengths of 20mm irrigation pipe, ensuring a 100% watertight seal without the need for specialist tools, glues, or heat welding. Thanks to its mechanical grip design, installation is incredibly simple and hassle-free.
Why Choose the Supreme 20mm Fitting?
Patented Poseidon Sealing System
At the heart of the Supreme compression fitting is the innovative Poseidon Balance Sealing System. The specially engineered conical seal (NBR/EPDM) automatically adjusts its grip and compression around the pipe as the nut is tightened. This eliminates the risk of leaks, even if the PE pipe surface is slightly scratched or uneven.
Heavy-Duty PN16 Rated & UV Stabilised Construction
Unlike standard, low-grade DIY store fittings, the Supreme series features a PN16 pressure rating. The body and nut are manufactured from virgin polypropylene (PP-B) with high thermal stability, fully protected against ultraviolet radiation (Class 8 per ASTM D2565). The product is frost-resistant and highly resilient against liquid chemical fertilisers used in horticulture.
Fast Assembly Without Dismantling (No-Dismantling Feature)
The internal profile design allows the PE pipe to be pushed directly into the fitting until it hits the pipe stop, without needing to fully unscrew the nut or remove the internal split-ring. This cuts installation time down by more than 50%.
Technical Specification
- Product Type: Straight Compression Coupling / Joiner
- Pipe Diameter: 20mm (Outside Diameter)
- Body & Nut Material: High-grade PP-B (Virgin Polypropylene) for superior mechanical strength
- Grip Ring (Clinch Ring): High-performance polyacetal (POM) to prevent pipe pull-out under hydraulic shock
- Seal Material: NBR / EPDM rubber (Hardness 70sh)
- Operating Temperature: -10°C to +45°C
- Nominal Pressure: PN16 bar
- Approvals & Certificates: WRAS (UK), DVGW (Germany), KIWA (Netherlands)
Primary Applications
The Supreme S16 20mm is ideal for:
- Above-ground and underground supply lines for drip irrigation systems (20mm LDPE pipes)
- Professional pop-up sprinkler systems for lawns, gardens, and sports pitches
- Agricultural irrigation, commercial horticulture, and commercial glasshouses
- Quick on-site repairs of mechanically damaged water pipe sections
Simple Installation Guide
- Cut the PE pipe square using a pipe cutter and remove any burrs or sharp edges.
- Slacken the nut on the Supreme fitting (there is no need to remove it completely).
- Push the pipe firmly through the nut and grip ring until you feel it pass through the seal to the pipe stop.
- Tighten the nut firmly by hand (hand-tight is usually sufficient for 20mm, though a PE fitting spanner can be used for a final nip).
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