20-63mm Metric MDPE Pipe
- Insert liner into pipe and slacken nut until half the thread is visible.
Note: Liners are not required on black pipe.
- Push and twist pipe into body through the nut, split ring and 0-ring.
- Tighten nut firmly. For final tightening on 50 & 63mm use a wrench
Dedicated Imperial to Metric Fittings
- Slacken nut until half the thread is visible.
- Push and twist Imperial pipe into body through the nut, red split ring and O-ring.
- Tighten nut firmly. For final tightening on 1¼", 1½" and 2" use a wrench.
Imperial Polythene Pipe Adaptor
- Cut pipe square. Remove nut from end of fitting and discard white split ring. Mount nut on pipe and assemble red split ring flush with end of pipe (taper towards the nut).
- Push barbed adaptor into pipe to the stop.
- Push plain end of adaptor into body of fitting, past the sealing ring to the stop. Hand tightening is sufficient.
Universal Pipe Adaptors: Galvanised and PVC
- Prepare pipe by ensuring that the end is free of grease and roughen outer surface with wire wool or similar. Cut pipe end square. Remove nut from end of fitting and discard white split ring.
- Push adaptor into fitting to the stop. Also push and twist the pipe until it meets the internal stop.
- Screw the nut tightly towards the body of the fitting. Final tightening with a wrench is essential. The installation should be firmly anchored against end loading.
Lead Pipe Adaptors
- Remove nut from fitting and discard white split ring. Mount nut on pipe followed by brown split ring and seal ring.
- Push both components onto the pipe until the seal ring is 20mm from end of pipe and touching the split ring.
- Enter pipe into fitting body and tighten firmly with a wrench. (It is important that the pipe is not pushed fully to the stop in the fitting).
Note: This product seals on the outside diameter of the pipe and it is therefore important that the lead pipe is in good condition on the external part of the pipe where the seal is made. Variation in lead piping sometimes results in oversize pipe. In these circumstances it may be preferable to use the white split ring provided with the fitting.
PlasShield™ Installation Instructions
PlasShield™ fittings are available for Barrier Pipes in the following OD dimensions: 25mm, 27.4mm, 32mm and 34.5mm, ensure the pipe and fittings are sized to suit each other.
- Cut pipe square. Remove nut, ring and barbed adaptor from the fitting body, mount nut on pipe and assemble grip ring flush with end of pipe (taper towards the nut).
- Push Barbed Adaptor into pipe until it reaches the stop.
- Push plain end of adaptor into the fitting body, past the sealing ring to the stop. Tighten nut firmly with a wrench.
For underground installations, wrap the whole fitting and adjacent pipe with self adhesive aluminium foil barrier tape (40 microns thick) ensuring a 50% overlap of the tape and a 50-100mm length of pipe either side of the fitting to be wrapped. In addition the foil taped fitting should be protected with a self adhesive waterproof tape or petrolatum tape (Denso).
Note: PlasShield™, when installed in accordance with the instructions above, provides improved resistance to chemical permeation. PlasShield™ does not guarantee absolute resistance. Applications may have rules, regulations and requirements, including those of the local Water Company. It is the installer's sole responsibility to inquire as to the existence of such rules, regulations and requirements and to implement them fully.
Installation Instructions for Fitting 75mm-110mm (Series 87)
- Undo the nut until 3-4 threads are visible.
- Insert the pipe into the fitting until the stop.
- Tighten the nut firmly with a Plasson wrench
(N.B. For the 125mm fittings refer to assembly instructions with fitting)
Installation Instructions for Plass4 Fittings
Remove any unsound material adhering to the pipe. Select correct fitting using the Plasson Gauge to measure the pipe. Cut and de-burr pipe as necessary. Slide the Plass4 fitting end onto the pipe until it reaches the internal fins and a resistance point is felt.
Important: Do not force the pipe end past the resistance point before tightening as this may impair the joint.
Tighten the nut against the body. Final tightening to be done with a Plasson Wrench or similar. Assemble the metric P.E. joint as per the standard fitting instructions. Note: If reusing the fitting, ensure the metal teeth are located in the grip ring, and pipe end does not pass the location fins in the body.
Pipe Conversion Chart
The basic fitting is a dedicated product for joining metric MDPE pipe. It will securely join the pipe without any additional components. However, for the purpose of WRAS approval, a plastic liner is used which is pushed into the pipe.
The fitting can be regarded as "Push Fit" as it is possible to simply loosen the nut, push it together and tighten.
The fittings can be easily adapted for the use with other pipe materials simply by adding an adaptor. In addition, there are also dedicated imperial to metric fittings.
Plasson offers a full range of adaptors to provide exceptional adaptability.
Plasson Tapping Valve Installation Instructions
1. Scrape & clean pipe.
2. Assemble the saddle part of the valve on the main pipe and tighten nuts evenly (use a deep socket key for dimensions 180 and smaller) until the upper and lower parts abut (dimension 200 and up, tighten until the metal bar of the straps abuts the upper part).
3. Scrape & clean branch pipe, clean valve branch spigot.
4. Assemble and fuse branch fitting. (All the above to be performed according to standard EF procedures.
5. Carry out the branch outlet pressure test (follow the installation company procedures) after the following cooling time has elapsed:
d 40 -180 20 min.
d 200-250 30 min.
6. To perform the tapping, turn the spindle* clockwise until a resistance is felt and keep turning until the resistance drops significantly (the tapping through the pipe is now done), keep turning until a second resistance is felt, the valve is now closed. *Spindle dimension is 14 mm square, use a suitable spanner.
7. To open the valve, turn the spindle counterclockwise to the valve top position (a significant resistance will be felt at this point) and turn back about 1/2 a turn. Note: The number of turns between closed and fully open positions is approx. 32.