PushFast Brochure - Plastic Systems

Jointing Procedure
It is important to remember that the performance of the Push-Fast joint is dependant on the efficiency of the seal between
the elastromeric sealing ring, the pipe and the socket. Damage to the pipe or fitting or the presence of dirt or grit will
adversely affect the performance of the joint.
Factory fitted protective packaging should be left in position until the components are ready for use.
1
Remove protectors from spigots and sockets and inspect for damage, paying particular attention to any scoring of the
spigot. Scored spigots must be cut back to an undamaged section.
Pipe Insertion Depth
Pipe Size Insertion Depth
(mm)
(mm)
90 155
110 130
125 145
160 195
180 200
225 230
250 250
7
Apply the DuraFuse Push-Fast lubricant, spray or gel to the spigot, grip ring and the elastromeric
sealing ring in the socket. Typical usage of lubricant is as follows:
2
Push-Fast pipes are supplied with a factory machine chamfer. Any site cut pipes should be cut square and similarly
chamfered. The quality of the chamfer is important to ensure the seal performs optimally.
Pipe Size
Number of Joints
(mm) per 400g Spray/ 500g Gel
90 100
110 80
125 60
160 30
180 30
225 25
250 20
3
4
5
6
Inspect the elastromeric sealing ring and the respective locating grooves for any damage and replace if necessary.
If dirt or grit is present, the seal must be removed and the seal groove and socket thoroughly cleaned of all foreign
matter before replacing the seal.
Inspect the grip ring as above and remove any foreign particles without removing the grip ring from the socket groove.
Once all components are clean, it is important to ensure they remain clean by replacing protectors or plastic bags over
the ends unless jointing is to be carried out immediately.
The spigot ends of any site cut pipes should be marked with the insertion depth, using a suitable pipe marker:
8
Excessive use of lubricant on the joint may prevent the joint from locking correctly, particularly if
the lubricant is highly viscous in texture. We supply a recommended silicon lubricant and gel
suited for this application.
Align the pipe and fitting and enter the spigot into the mouth of the socket. Apply sufficient force
to the end of the pipe/fitting remote from the joint so that the spigot enters the socket up to the
marked insertion depth. Smaller sized pipe and fittings should be entered using hand-applied force,
where assistance of a crowbar and a wooden block may be necessary for larger sizes.