Extend water supply runs with the John Guest MDPE compression straight coupling, supplied in a 20mm diameter. It provides a secure, watertight connection between two equal lengths of MDPE pipe in cold water service systems.

Built with a compact and durable profile, this straight connector is ideal for routine system modifications and pipeline extensions in confined underground spaces. It comes pre-assembled and ready for immediate installation without specialist tools or heat.

The demountable connection allows for straightforward disconnection during site maintenance or layout alterations.

• 20mm straight coupling – securely joins two equal lengths of MDPE pipe
• Pipeline extension – easily extend or modify cold water run lines
• Pre-assembled fitting – install immediately without specialist tools or heat
• Compact construction – durable build suited for confined trench applications
• Demountable joint – quick and easy to release during routine maintenance
• Available in various sizes – including 25mm and 32mm

Delivery (UK mainland only)

 

Next Day: £5, or FREE over £40

- Order by 9pm Mon-Thu: next working day

- Order Fri to 5pm Sun: Monday

- Order after 5pm Sun: Tuesday

 

Pre-12pm: £10

- Same cut-offs as Next Day above

 

Saturday & Sunday: £10, or £5 over £40, or FREE over £75

- Saturday: order by 6pm Fri

- Sunday: order by 4pm Sat

 

Heavy items (over 30kg)

- Mon-Fri only. Order by 6pm and allow up to two working days

- Order after 6pm Thu: arrives after the weekend

 

Supplier items

- Sent directly by the supplier, so timings vary. Lead times appear on the product page in working days (Mon-Fri)

 

More about delivery 

Next Business Day Collection (eligible items)

- Order by 9pm Mon-Thu: collect next day

- Order after 9pm Thu to 5pm Sun: collect Monday

- Heavy items (over 30kg): allow up to two working days

 

Opening hours

- Weekdays vary by branch: open 6:30am-7am, close 6pm-8pm

- Saturday: 7am-6pm

- Sunday: 9am-4pm

 

Check your local store's hours and that it's open before visiting. Please wait for our text or email before collecting.

 

Holding your order
We'll hold it for 14 days, then automatically refund your original payment method.