When cutting Hep 2 O
pipe it is essential to use the correct tools.
Only the recommended
cutters should be used. Do not use a hacksaw. (Figure No. 1)
Before making a joint
ensure the pipe end is clean, cut square and free from burrs and
surface damage. (Figure No. 2). Place the pipe in the jaws of the
cutter and apply pressure, the pipe should be rotated whilst maintaining
the pressure until the pipe is severed. (Figure No. 3)
To ensure adequate insertion, essential for a secure joint cut the
pipe square at one of the cutting/insertion marks '/\'. The distance
between these marks indicates full socket depth (Figure No. 3).
may not be possible to use the /\ marks eg. badly lit areas, jointing
copper pipe or where an exact length is required, mark the insertion
depth on the pipe using a pencil or suitable marker pen. The correct
insertion depth can be obtained by holding the pipe against the
fitting or by measuring with a rule, as shown in figure 4. The depth
of insertion is shown in Table 3 at the end of this section.
insert a Hep 2 O support sleeve into the pipe end. (Figure No. 5)
It is essential to use a support sleeve in order to make a good
joint. Failure to use a support sleeve will negate the guarantee
(the only exceptions to this rule are when using copper pipe, or
the spigot end of a Hep 2 O fitting).
When using Demountable Hep 2 O BiTite fittings, DO NOT slacken the
retaining cap prior to pipe insertion. This will not ease jointing.
Push the pipe and fitting firmly together (Figure No. 6). Do not
knock the fittings onto the pipe (Figure No. 7). A secure professional
joint has been achieved when the socket of the fitting has reached
the next '/\'mark (or pencil mark) on the pipe.
TIP - when inserting
pipes into fittings it is a good idea to look at the fittings to
make sure a washer didn't accidentally drop out or get turned around.
As a final
precaution, after jointing it is recommended that, whilst holding
the fitting firmly, the pipe is tugged back to check that the
joint is secure.
a Joint (Demountable
fittings only) Figure No. 9 Unscrew the retaining cap and remove
the pipe clear of the fitting.
wedge and O ring will be in position on the pipe. Remove the
O ring from the end of the pipe.
wedge can then be removed using the demounting tool. Provided
the grab wedge is undamaged, it can be re-used.
should be rotated in cutters during cutting operation.
sleeve is an integral part of system and should NEVER be omitted
when using Hep2O pipe.
completed Hep2O BiTite joints can be rotated even under pressure.
Rotatability also enables fittings such as stopcocks and draincocks
to be rotated close to the wall when not in use.
Re-assembling a Joint
To re-assemble the fitting, insert the O ring into the fitting
body until it rests on the cassellated ledge at the base of the
socket. If necessary re-lubricate the O ring with Hepworth Silicone
Lubricant. Check that the grab wedge is undamaged (replacement grab
wedges are available. Insert the grab wedge into the fitting body
with the flat face of the grab wedge against theO ring, slots
facing outwards. Replace the retaining cap and hand tighten. The
fitting is now ready for use.
Figure No. 12
10mm, 15mm and 22mm and 28mm Fittings