Push-Fit Plumbing

plumbing pipes


Push-Fit is our hand demountable white, push-fit plumbing system, offering maximum flexibility and adjustability.

Push-Fit features a one-step jointing operation for quick and easy installation. Push-Fit leads the market in speed to fit. If you need to adjust a fitting joint during the installation process, Push-Fit fittings can be quickly demounted by hand, or by using our release tool.

Use Push-Fit with Polypipe white polybutylene flexible pipe, using a Polypipe metal or plastic pipe stiffener. For extra security, choose the new Polypipe sealed stiffener. Push-Fit can be used on a wide range of contract and retrofit projects, including hot and cold water systems, and is particularly suitable for first fix installations.

The system offers a number of benefits:

• One step operation for quick and easy
• PolyFit is ideal for first fix applications
or when demountability is important
• PolyFit is hand or tool demountable for
maximum flexibility
• Use for most hot and cold water supply
or heating applications
• Use with Polypipe white polybutylene
pipe systems or with copper pipe
• Use Polypipe metal, plastic and sealed
stiffeners (15mm and 22mm only)


Step 1a: Cutting Polypipe pipe Check the pipe is not scored or scratched in any way and if it is, cut back to a point where there is no damage. Using a Polypipe pipe cutter, cut the pipe squarely using the “K” marks on the pipe as a guide. These marks indicate when the pipe has been inserted into the fitting correctly.

Step 1b: Cutting copper pipe for insertion in a PolyFit fitting Wherever possible, use a rotational pipe cutter when cutting copper pipe. Ensure that all cut ends have a rounded lead-in, with burrs removed. Never use a hacksaw. You will need to mark the insertion depth on the pipe as below.

Step 2: Use of pipe stiffener Insert a pipe stiffener into the pipe (not required with copper pipe). Polypipe offer three types of stiffeners for use with PolyFit fittings: metal, plastic and for extra security – a sealed stiffener (15mm and 22mm only). When using a sealed stiffener, the stiffener will be retained in the fitting when demounted.

Step 3: Visually check fitting and fitting components Visually check that all components are present, undamaged and free from contamination. PolyFit fittings contain; a blue bottom washer; an EPDM ‘O’ ring; a blue top washer and a collet all held in place by a cap nut. All cap-nuts are torqued to ensure they cannot unscrew easily. There is no need to undo cap-nuts and remove any components prior to jointing PolyFit fittings.


All Polypipe fittings are supplied with pre-lubricated EPDM ‘O’ rings. If any further lubrication is required only Polypipe silicone lubricant should be used. Substances such as solder flux must not be used.

Step 4: Insert pipe fully into fitting Insert the pipe into the fitting, ensuring it is inserted to the full socket depth denoted by the next “K” mark on the pipe.

Step 5: Check joint security A quick tug on the pipe will confirm that the pipe is inserted past the grab ring and that a grab ring was present in the fitting. It does not, however, ensure that the pipe is fully inserted as this can only be confirmed by using the depth insertion mark.

Demounting a PolyFit joint

PolyFit fittings are fully demountable and re-usable. To demount a PolyFit fitting simply depress the collet squarely towards the fitting and pull the pipe out of the fitting. Care should be taken that the collet is pushed all the way back to the fitting squarely to avoid scratching or scoring the pipe when it is pulled from the fitting. When systems have been pressurised the collet is designed to grip into the pipe, therefore, using a fitting release aid.

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