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John Guest Compression Conversion Adaptor - 25mm X 22mm

John Guest Compression Conversion Adaptor - 25mm X 22mm

This adaptor enables seamless transition from 25mm MDPE to 22mm copper pipe. Designed for undergro...

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B&Q - Mdpe Compression Conversion AdaptorMpde To Copper (Pushfit)20mm X 15mm

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John Guest Blue Mdpe To Copper Conversion Adaptor 20X15mm Pushfit Pipe Fitting, Wras Approved Connector

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eBayJohn Guest MDPE Compression Adaptor MDPE to Copper Pushfit 20mm x 15mm
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AmazonJohn Guest Blue Mdpe To Copper Conversion Adaptor 20X15mm Pushfit Pipe Fitting, Wras Approved Connector
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Product Information

Full details

This John Guest Compression Conversion Adaptor is for plumbers and DIY enthusiasts needing to connect 25mm MDPE pipe to 22mm copper, PEX, or PB systems, particularly at underground water entry points. Its key benefit is a secure, leak-free connection without special tools. A potential caveat is its specific size compatibility, so ensure it matches your pipe diameters. This adaptor offers a durable, WRAS-approved solution for cold water supply lines.

All features

Model Part NumberPI9012
BrandJohn Guest

Extended Product Information

FAQs

What types of pipe can this adaptor connect?

This adaptor is designed to connect 25mm MDPE pipe to 22mm copper, PEX, or PB pipe.

Is this adaptor suitable for hot water?

No, this adaptor is intended for cold water applications only.

Do I need special tools to install this adaptor?

No, the compression fitting technology does not require specialist tools or hot works for installation.

What does WRAS approved mean?

WRAS (Water Regulations Advisory Scheme) approval signifies that the product meets stringent water regulations and quality standards for safe use in public and private water supply systems.

Can this adaptor be used underground?

Yes, it is manufactured from durable, corrosion-resistant materials suitable for underground installation in cold water pipe systems.

How many adaptors are included in a pack?

Each pack contains 10 conversion adaptors.

What is the maximum operating pressure?

While specific pressure ratings should be confirmed with manufacturer specifications, John Guest compression fittings are designed to provide secure, long-lasting joints in typical domestic water supply pressures.

Troubleshooting

Connection is leaking

Ensure both pipe ends are cut squarely and are free from burrs. Verify that the pipes are inserted fully into the adaptor body and that the compression nut is tightened sufficiently. Check for any damage to the pipe ends or the fitting itself.

Difficulty inserting pipe

Confirm that the pipe is the correct size (25mm MDPE and 22mm copper/PEX/PB) and that the ends are clean and free from obstructions. Ensure the pipe hasn't been deformed.

Fitting appears corroded

While designed for corrosion resistance, inspect the area around the fitting for external corrosive agents. If the fitting itself is significantly degraded, it may need replacement.

Pros and Cons

Pros

  • Provides a reliable transition between MDPE and copper/PEX/PB pipes.
  • Easy installation with compression fittings, no special tools needed.
  • Durable materials ensure longevity, especially in underground applications.
  • WRAS approval guarantees suitability for drinking water systems.
  • Supplied in a pack of 10 for value and convenience.

Cons

  • Specific size: only compatible with 25mm MDPE and 22mm copper/PEX/PB.
  • Not suitable for hot water systems.
  • Requires precise pipe preparation for a secure seal.

Setup, Compatibility & Care

Setup:

  1. Ensure the ends of both the 25mm MDPE pipe and the 22mm copper, PEX, or PB pipe are clean, dry, and free from damage.
  2. For MDPE pipe, ensure a square cut and remove any burrs.
  3. For copper pipe, ensure a clean, de-burred end.
  4. Slide the compression nut and then the ring onto the pipe ends as per the specific pipe type's requirements.
  5. Insert the pipe ends fully into the adaptor body.
  6. Tighten the compression nut securely using appropriate wrenches. Do not overtighten, but ensure a firm grip to create a seal.

Compatibility:

  • This adaptor is specifically designed for connecting 25mm MDPE pipe to 22mm copper, PEX, or PB pipe.
  • It is suitable for cold water applications only.
  • Approved for use in potable water systems.

Care:

  • As these fittings are typically installed underground or in protected areas, regular maintenance is minimal.
  • Periodically inspect visible connections for any signs of leakage. No lubrication is typically required for the internal seals.

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