MDPE Compression Fittings
Technical Data Sheet
Document Reference: TDS-MD-FT-001
Issue Date: February 2026
Range: MDPE Compression Fittings
Product Description
Kalsi MDPE compression fittings are designed for jointing blue MDPE water pipe. Aquaflow polypropylene fittings carry WRAS Product Approval #2207406 for use with PE pipe in cold water applications. The compression grip ring design requires no special tools and creates a secure, leak-free joint.
Material Specification
| Property | Specification |
|---|---|
| Body material | Polypropylene |
| Compression ring | Polyacetal |
| O-ring seal | EPDM |
| Standard | For use with PE pipe manufactured to EN 12201 |
| Pressure rating | 16 bar at 20°C |
Fitting Range
Couplings
| Description | Sizes Available |
|---|---|
| Straight Coupler | 20mm - 63mm |
| Reducing Coupler | Various combinations |
Elbows
| Description | Sizes Available |
|---|---|
| 90° Elbow | 20mm - 63mm |
| 45° Elbow | 20mm - 50mm |
Tees
| Description | Sizes Available |
|---|---|
| Equal Tee | 20mm - 63mm |
| Reducing Tee | Various combinations |
Adaptors
| Description | Sizes Available |
|---|---|
| Male Adaptor (BSP) | 20mm - 63mm |
| Female Adaptor (BSP) | 20mm - 63mm |
| Tank Connector | 20mm - 32mm |
| Flange Adaptor | 50mm - 63mm |
Stop Ends
| Description | Sizes Available |
|---|---|
| End Cap | 20mm - 63mm |
| End Plug | 20mm - 32mm |
Size Chart
| MDPE Pipe Size | BSP Thread Sizes |
|---|---|
| 20mm | ½”, ¾” |
| 25mm | ¾”, 1” |
| 32mm | 1”, 1¼” |
| 50mm | 1½”, 2” |
| 63mm | 2”, 2½” |
Installation
Tools Required
- Pipe cutter or hacksaw
- Spanner or adjustable wrench
- No PTFE tape required (seal is mechanical)
Method
- Cut pipe square
- Remove burrs
- Mark insertion depth on pipe
- Disassemble fitting
- Slide nut and compression ring onto pipe
- Insert pipe to marking
- Hand tighten nut
- Wrench tighten (2 full turns from hand tight)
Reuse
Fittings can be reused - replace O-ring if remaking joint.
Approvals & Compliance
- ✓ WRAS Approved Product #2207406 for Aquaflow polypropylene fittings
- ✓ For use with PE pipe manufactured to EN 12201
- ✓ Install in accordance with WRAS IRN R001 and manufacturer guidance
- ✓ UK manufactured
Downloads: WRAS Product Approval Certificate - Aquaflow MDPE Fittings | WRAS Product Approval Letter - Aquaflow MDPE Fittings
Temperature & Pressure
| Temperature | Pressure |
|---|---|
| 20°C | 16 bar |
| 40°C | 12 bar |
| 60°C | 8 bar |
Guarantee
Product Guarantee: 25 years against manufacturing defects
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