These MDPE compression fittings are designed to make secure connections on 20mm water supply pipew...These MDPE compression fittings are designed to make secure connections on 20mm water supply pipework, whether you're extending a run, changing... MDPE or medium density polyethylene is a reliable and highly versatile material that has proven itself across a wide range of plumbing products providing a stable and economical platform for domestic and commercial installations. We have a wide array of medium density polyethylene fittings to suit your latest hot or cold plumbing project, no matter the scope or scale. Taking you from parts list to job Hand tight only Captive O ring seal Lifetime protection WRAS approved Withstands up to 16 bar Variety of applications Used for connecting water mains pipes and any water supply pipes Size 20mm, Weight: 0.1543235834 Pounds, Manufacturer: B2C
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 Number
1533251eMD
Brand
B2C
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:
Ensure the end of the 20mm MDPE pipe is cut square and clean. Remove any burrs or debris.
Loosen the compression nut on the fitting.
Slide the compression nut onto the MDPE pipe, followed by the ferrule (if supplied separately).
Insert the end of the MDPE pipe fully into the fitting body, ensuring it reaches the internal stop.
Slide the ferrule down to the pipe end and screw the compression nut hand-tight onto the fitting body.
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.