MDPE Push Fit Reducing Coupling
Useful Information
Technical Specification
- Type: Push Fit Reducing Coupling
- Connection Type: Push fit (compression-style)
- Size Range: 25mm x 20mm to 63mm x 50mm
- Material Composition:
- Body: High-impact polypropylene
- Seal: Nitrile rubber (NBR) (varies by design)
- Pressure Rating: Up to 16 bar at 20°C
- Temperature Range: 0°C to +40°C (cold water use only)
- Standards Compliance: ISO 14236, Kiwa approved for use in potable water systems
- Pipe Compatibility: MDPE pipe of corresponding outer diameters
Liner Requirement: Pipe liners (stiffeners) are required and must be ordered separately
Description
The MDPE Push Fit Reducing Coupling is designed to securely join two MDPE pipes of different diameters, offering a quick and effective solution for size transitions within a pressurised water system. Ideal for potable water, irrigation, and utility applications, this coupling requires no disassembly and installs easily with a simple push-fit action. Manufactured from durable polypropylene and Kiwa approved, it ensures reliability in above- and below-ground pipe networks. Pipe liners are not included and must be ordered separately to maintain sealing integrity.
Key Features & Benefits
- Reduces Between Two Pipe Sizes: Joins MDPE pipes of different diameters to adapt system layouts efficiently.
- Fast Push-Fit Installation: Tool-free assembly with no disassembly required—ideal for quick repairs and retrofits.
- Durable and Corrosion-Resistant: Polypropylene body offers long-term resistance to impact, UV, and environmental stress.
- Kiwa Approved: Safe for use in potable water systems and compliant with industry standards.
- Compact and Lightweight: Easy to handle and install in confined or difficult-to-access areas.
- Pipe Liner Compatible: Use of separate stiffeners is strongly recommended to reinforce pipe ends and ensure a secure, leak-free joint.

| Product Code | Supplier Code | d (mm) | d1 (mm) | E (mm) | E1 (mm) | H (mm) | I (mm) | I1 (mm) |
| 350116 | PP1011U0025020 | 25 | 20 | 47 | 41 | 100 | 48 | 45 |
| 350117 | PP1011U0032020 | 32 | 20 | 58 | 41 | 106 | 54 | 45 |
| 350118 | PP1011U0032025 | 32 | 25 | 58 | 47 | 110 | 54 | 48 |
| 350119 | PP1011U0040032 | 40 | 32 | 70 | 58 | 139 | 71 | 55 |
| 350120 | PP1011U0050025 | 50 | 25 | 85 | 47 | 151 | 79 | 51 |
| 350121 | PP1011U0050032 | 50 | 32 | 85 | 58 | 152 | 79 | 55 |
| 350122 | PP1011U0063032 | 63 | 32 | 103 | 58 | 172 | 91 | 55 |
| 350123 | PP1011U0063050 | 63 | 50 | 103 | 85 | 187 | 91 | 81 |
