JG Speedfit MDPE Pipe Insert 20mm to 32mm

Every pipe end that goes into a Push-Fit MDPE fitting needs support from inside, and the JG Speedfit MDPE pipe insert gives it. It stops the soft pipe from squashing, so the O-ring keeps sealing.

Why the JG Speedfit MDPE pipe insert matters

MDPE is soft compared with copper, and it creeps under load. Without an insert, the pipe can go oval or pull in over time. That is when a joint that was dry on the day starts weeping underground. An insert costs little and saves digging the job up again.

• Sizes: 20mm, 25mm and 32mm
• Fits inside MDPE pipe ends
• For JG Speedfit MDPE Push-Fit fittings
• One needed for each pipe end

Cut the pipe square, then push the insert into the bore until its lip sits on the end of the pipe. Check you have the right size for the pipe in front of you, because 25mm and 32mm can look alike in a muddy trench. Then push the pipe into the fitting as normal. Spares are worth carrying, because they are easy to drop.

Inserts from our Glasgow trade counter

All the fittings they go with are under MDPE and alkathene fittings.

Plumb Parts sells from 555 South Street, Glasgow G14 0QX. Visit Mon-Fri 8am-5pm or Sat-Sun 8am-1pm, or order online for collection.

Specification

• Brand: JG Speedfit
• Range: MDPE cold water services fittings
• Connection: Fits inside the bore of MDPE pipe
• Sizes: 20mm, 25mm and 32mm
• Standard or approval: Water Regulations Advisory Scheme approved (JG Speedfit technical guide)
• Max pressure: 16 bar at 20°C
• Max temperature: Cold water only, rated at 20°C
• Suitable for: Blue MDPE (PE80) cold water service pipe, above or below ground

Common Questions

What are MDPE pipe inserts used for? An insert goes inside the end of the MDPE pipe and supports the bore, so the pipe keeps its round shape where the fitting grips it.

Do you need inserts for MDPE pipe? It’s good practice to fit one with Speedfit MDPE fittings, as it stops the pipe squashing and helps the joint stay sound.

What is MDPE pipe? It’s medium density polyethylene pipe, the tough flexible plastic pipe used for cold water supplies.

What is MDPE pipe used for? Mostly for cold water mains and underground water supplies, such as the run from the boundary into a house or out to a garden tap.

Which size insert should I use? Always use an insert the same size as the pipe you’re working with.

Can I use MDPE inserts on hot water? No, these MDPE fittings are for cold water only.

Datasheets

• JG Speedfit Cold Water Pipe Insert Data Sheet (PDF)