Monument Test Plug Set - 15mm & 22mm - 1368U

The Monument 1368U 2 Piece Test Plug Set is designed for blocking off small pipes, such as copper ...

Best current price£17.87from OnBuy.com

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OnBuy.comMonument 1368U Test Plug Set Of 2 (1 X 15 & 22Mm) 5063750610894
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B&QB&Q - 1368U Test Plug Set Of 2 (1 X 15 & 22mm) Multi Colour (One Size)
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DebenhamsMonument Unisex Multicolor 1368U Test Plug Set Of 2 (1 X 15 & 22Mm)
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Product Information

Full details

The Monument 1368U 2 Piece Test Plug Set is an essential tool for professional plumbers and serious DIYers tasked with prepping pipe systems for commissioning. It provides the ability to securely block off 15mm and 22mm copper pipes for reliable dry testing, ensuring system integrity before the final hookup; however, users should be aware that these plugs are specifically designed for fluid-based testing and are not intended for air pressure testing.

All features

Model Part Number1368U
BrandMonument

Extended Product Information

FAQs

Can I use these for air testing?

No, these plugs are not designed for air pressure testing. They are strictly for dry testing liquid-based systems.

What pipe materials are these compatible with?

They are designed for use with standard copper piping.

Does this set include both sizes?

Yes, the 1368U kit includes one 15mm plug and one 22mm plug.

Can these be reused?

Yes, the plugs are durable and intended for repeated use if maintained properly.

What should I do if the rubber seal wears out?

Inspect the seals regularly. If the rubber shows signs of cracking or hardening, the plug should be replaced to maintain safety.

Troubleshooting

Plug does not create a secure seal.

Check the pipe end for burs or debris and ensure the plug is inserted straight.

Plug slips out of the pipe under test pressure.

Verify that the rubber seal is clean and dry, then ensure it is tightened sufficiently to grip the internal pipe wall.

Pros and Cons

Pros

  • Covers two most common pipe sizes (15mm and 22mm)
  • Ensures secure seal for dry testing
  • Simplifies system commissioning
  • High-quality construction from a trusted plumbing brand

Cons

  • Not suitable for air pressure testing
  • Limited to specific pipe diameters
  • Requires careful insertion to prevent copper deformation

Setup, Compatibility & Care

To use these plugs, ensure the pipe ends are deburred and clean of sharp edges or debris, as this can damage the plug or create a poor seal. Insert the plug firmly into the pipe opening and tighten until the seal is secure. Do not overtighten, as this may deform the copper pipe.

After use, clean the rubber components of the plugs with a soft cloth to remove any residue. Store the set in a dry place to prevent the metal components from oxidizing and to ensure the rubber remains supple for the next project.

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