MDPE Compression Connector Fittings - 20mm - 1/2" BSPF

These MDPE compression fittings are designed to make secure connections on 20mm water supply pipew...

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Product Information

Full details

This guide is for plumbers and DIY enthusiasts working with 20mm MDPE (Medium Density Polyethylene) water supply pipes. The key benefit is creating secure, reliable connections for extending pipe runs or making alterations, with a caveat that proper tightening is essential to prevent leaks. These fittings are designed for straightforward compression jointing onto MDPE pipes and offer various connection types, including BSP threads for integrating with other plumbing components. They are WRAS approved and built to withstand significant water pressure.

All features

Model Part Number1533251eMD
BrandB2C

Extended Product Information

FAQs

What does WRAS approved mean?

WRAS approval signifies that the product has been rigorously tested and meets the Water Regulations Advisory Scheme's standards for use in public water supplies in the UK, ensuring it is safe for drinking water.

Can I use this fitting on other types of pipe?

No, these fittings are specifically designed for 20mm Medium Density Polyethylene (MDPE) pipes. Using them on other pipe materials may result in an insecure connection and leaks.

How tight should I make the compression nut?

Tighten the nut hand-tight first, then use a wrench to turn it an additional 1/2 to 1 full turn. The goal is a secure seal; overtightening can damage the pipe or fitting.

What is the maximum pressure this fitting can handle?

These fittings are designed to withstand up to 16 bar of water pressure, making them suitable for most domestic and light commercial applications.

Can I reuse this fitting if I need to disconnect it?

It is generally recommended to replace the ferrule (the plastic ring that compresses onto the pipe) if you need to reconnect the fitting. Ensuring the pipe end is re-cut square is also important for a reliable seal.

What is the BSP thread used for?

The 1/2" BSP Female (BSPF) thread allows you to connect this fitting to components that have a 1/2" BSP Male (BSPM) thread, such as certain types of taps, valves, or adapters.

Troubleshooting

Leak at the compression joint

Ensure the pipe is inserted fully, the nut is tightened sufficiently (but not overtightened), and the pipe end is clean and square. Check the ferrule is correctly positioned.

Difficulty inserting pipe

Verify that you are using the correct size (20mm) MDPE pipe. Ensure the pipe end is clean and free of obstructions. Slightly twisting the pipe as you insert it can help.

Fitting won't tighten properly

Check for cross-threading on the compression nut and fitting body. Ensure there are no foreign objects or debris preventing a smooth engagement of the threads.

Connection fails under pressure

Re-examine the installation steps. Confirm the pipe is fully seated, the nut is adequately tightened, and that the pipe material is indeed MDPE and not a different type of plastic.

Pros and Cons

Pros

  • Creates secure and reliable pipe connections.
  • WRAS approval ensures compliance for potable water systems.
  • High pressure rating (up to 16 bar) provides durability.
  • Easy to install without specialized tools.
  • Versatile for various plumbing modifications and extensions.

Cons

  • Requires careful tightening to ensure a proper seal.
  • Specific to 20mm MDPE pipe; not compatible with other pipe types or sizes.
  • Can be susceptible to damage if overtightened or cross-threaded.
  • BSP thread size is fixed (1/2" BSPF for this model), limiting direct compatibility with different thread types without adapters.

Setup, Compatibility & Care

Setup:

  1. Ensure the end of the 20mm MDPE pipe is cut square and clean. Remove any burrs or debris.
  2. Loosen the compression nut on the fitting.
  3. Slide the compression nut onto the MDPE pipe, followed by the ferrule (if supplied separately).
  4. Insert the end of the MDPE pipe fully into the fitting body, ensuring it reaches the internal stop.
  5. Slide the ferrule down to the pipe end and screw the compression nut hand-tight onto the fitting body.
  6. Using a wrench, tighten the compression nut a further 1/2 to 1 full turn. *Overtightening can damage the pipe or fitting.* The exact tightness may vary; a secure, snug fit is key.

Compatibility:

  • Pipe Type: Exclusively designed for 20mm Medium Density Polyethylene (MDPE) pipes.
  • Thread Connection: Features a 1/2" BSP Female thread for connecting to male BSP threaded components.
  • Pressure: Suitable for systems operating up to 16 bar.

Care:

  • These fittings require no regular maintenance. Ensure they are installed correctly to maintain their performance.
  • Avoid exposing the fittings to harsh chemicals that could degrade the MDPE material.
  • If dismantling, replace the ferrule and ensure the pipe end is re-cut for a secure re-connection.

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