Prima Plus Compression Coupling - 8mm - Pack of 10
Best current price£5.00from Amazon
Best offers
Shopping.co.uk recommended and popular offers
Amazon£5.00Visit shop 8mm Brass Compression Coupling
Visit shopAmazon£5.00Visit shop All Offers
6 offers from £5.00 - £17.24
View price history by clicking the chart icon.
eBay8mm Brass Compression Coupling - FREE Next-Day Delivery
Free delivery in 1–3 days
£7.20
Visit shop
PrimaPlus Compression Coupling 8mm (Pack of 10)Free delivery in 1–3 days£14.78Visit shop →
The RangePrima Plus Compression Coupling 8Mm - 21000005 - Pack Of 10 For Plumbing - Grey
Free delivery in 1–3 days
£15.53
Visit shop
OnBuy.comPrima Plus Compression Coupling 8Mm (Pack Of 10) 5051258009647
Free delivery in 1–3 days
£16.65
Visit shop
B&QB&Q - Prima Plus Compression Coupling 8mm (Pack Of 10)
Free delivery in 1–3 days
£17.24
Visit shop
Product Information
Full details
The Prima Plus 8mm Compression Coupling is designed for professional plumbers and DIY enthusiasts working on small-bore water and gas installations. These British-manufactured brass fittings offer a high-performance, secure connection that is WRAS approved for drinking water safety, though users should ensure their pipework is strictly 8mm as these fittings are not compatible with larger or non-standard metric sizes.
All features
| Model Part Number | 21000005 |
|---|---|
| Brand | Prima Plus |
Extended Product Information
FAQs
Are these fittings suitable for drinking water?
Yes, these fittings are fully WRAS approved, making them safe for use in potable drinking water systems.
Can I use these for gas lines?
Yes, they are designed to be suitable for use in both water and gas systems.
What is the maximum pressure these couplings can handle?
They are rated for a maximum pressure of 16 Bar.
Does the pack include olives?
Yes, the pack includes 10 couplings and the necessary olives for each.
What is the warranty period?
These fittings come with a 5-year guarantee.
Can I use these with 10mm pipe?
No, these are strictly designed for 8mm piping.
Troubleshooting
The connection is dripping after installation
Ensure the pipe is cut square and the olive is seated correctly. Tighten the nut incrementally by a quarter turn until the leak stops.
Nut feels difficult to turn
Check for debris or grit on the threads. Clean the threads and apply a small amount of plumber's lubricant if necessary.
The olive will not seal
Check if the pipe was damaged during insertion. If the olive is severely deformed or the pipe is scratched, you may need to trim the pipe and use a new olive.
Pros and Cons
Pros
- Manufactured in Britain to high engineering standards
- Suitable for both water and gas system applications
- WRAS approval provides peace of mind for drinking water safety
- Generous 5-year guarantee covering manufacturing defects
- Easy-to-use compression mechanism requiring basic hand tools
Cons
- Limited to 8mm diameter piping only
- Not intended for use with high-heat steam systems
- Brass requires care to prevent scratching or damage to the sealing surface
Setup, Compatibility & Care
To install, ensure the pipe end is cut square and deburred to prevent damaging the olive. Slide the nut and the olive onto the pipe, insert the pipe into the coupling body, and tighten the nut by hand before finishing with a spanner. Do not overtighten, as this can deform the olive and cause leaks. These fittings are compatible with 8mm copper and appropriate plastic piping. Maintenance is minimal; however, it is recommended to inspect joints annually during routine system checks. Avoid using harsh chemical cleaners on the brass finish to prevent degradation of the material.