John Mills Speedfit KM39767 - Manual (Page 9)

Water-replenishing ring mains are typically used in hotels
and hospitals. They are maintained at a constant high
temperature to supply hot water to distribution pipes to
wards or hotel rooms which may be some way from the
heat source.
These systems are very different from more conventional
domestic hot water and central heating systems.
Speedfit Products cannot be used on ring main systems.
The exception would be those systems designed for
domestic situations which have an intermittent
temperature of less than a maximum of 65ºC. This is in
accordance with BS7291 Parts 1 and 3 Class S.
P ART N O .
JG-TS
P ART N O .
JG HDC
BLADE-JGHDC
P ART N O . S IZE MM
PC15W 15
PC22W 22
PC28W 28
PCSW
For up to 22mm size pipe.
P ART N O . S IZE MM
NPC10 10
NPC15 15
NPC22 22
NPC28 28
P ART N O . S IZE MM
10CFB 10
15CFB 15
22CFB 22
To help create a tighter bend than
the minimum with unsupported pipe.
P ART N O . S IZE MM
JG-BS10 10
JG-BS15 15
JG-BS22 22
For use with Female Coupler/Tap Connector.
PLUMBING SPARE PARTS
P ART N O . S IZE MM
PXC 10 10
PXC 15 15
SPF 22 22
PXC 28 28
PXC 10 10
PXC 15 15
PXC 22 22
PXC 28 28
P ART N O . S IZE MM
10 EPR 10
15 EPR 15
22 EPR 22
28 EPR 28
P ART N O . S IZE
1/2 EPW 1/2
3/4 EPW 3/4
10mm
15mm and 22mm
P ART N O . S IZE MM
10RA 10
15RA 15
22RA 22
28RA 28
PIPE AND PIPE ACCESSORIES
For Standard Fittings
For Twist and Locks Fittings
SYSTEM CONNECTIONS
The Speedfit Range includes couplers to connect
Speedfit Pipe to 1/2” to 1” BSP and BSPT. See page 12.
Many but not all compression fittings are suitable for use
with plastic fittings and pipe. Users should therefore
check for compatibility. Compression fittings with short
tube stop depth or brass olives should not be used with
plastic fittings or pipe.
When using compression fittings with Speedfit Pipe, a
Standard Pipe Insert (prefix TSM) must be used to
withstand the compressive pressure of the olive. The olive
must be located within the the length of the pipe insert
and the pipe fully inserted into the fitting. The connection
should not need more than 2 full turns after the olive has
gripped the pipe. JG Speedfit recommend the use of soft
copper olives.
In modern properties, water enters a building usually in
blue MDPE (medium density polyethylene) pipe. In order
to comply with Water Regulation Schedule 2.10, the
internal plumbing system should be connected via a
Speedfit Stop Valve (Part Nos. 15STV and 22STV) in
conjunction with a PE-Copper Coupler from the Speedfit
range of Underground Fittings.
Speedfit fittings can be connected onto chromium plated
copper pipe if the chromium plating is completely
removed to the full depth of the fitting. To ensure
maximum grip, the fitting of a collet clip is recommended.
Connection of Speedfit
pipe to supply pipe of other
materials should be via a
stop tap with a 15mm or
22mm compression outlet.
Compression fitting Standard Pipe insert
Olive
Speedfit Pipe
with Superseal Pipe Insert
Stop valve
Copper pipe
PE copper coupler
MDPE pipe with
Pipe Insert
Collet clip
Speedfit Pipe
Speedfit pipe should never be connected directly to a boiler.
Although most modern boilers have a high limit
thermostat, residual heat can be conducted by the heat
exchanger. Therefore, Speedfit recommend a minimum of
1 metre from the boiler casing should be run in copper
pipe unless otherwise stated in the boiler manufacturers
installation literature.
A gravity primary circuit operating on an uncontrolled
cooking range or solid fuel boiler should be run entirely in
copper and the heating circuit run in copper for the first metre.
Refer to BS 5955: Part 8 for further clarification.
All appliances should have safety devices to make sure
they cannot operate above the working temperature and
pressure range set out in our Technical Checklist on page
29. If safety devices are not incorporated within the
appliance then external controls will be needed.
Water meters (and other devices) can contain check
valves that prevent the expansion of heated water back
down the main supply from a combi boiler. If plastic pipe
is to be used, a suitable expansion vessel must be fitted.
This is especially important to consider if a water meter is
fitted retrospectively. Speedfit do not recommend the use
of plastic pipe on the main supply between a water meter
and a combi boiler if an expansion vessel is not fitted.
Speedfit Products should not be fitted to a sealed system
oil boiler, back fired boiler or other uncontrolled heat source.
Please also see Drop-Pipe Systems on page 17 and
System Commissioning and Flushing on page 21.
Ensure nut and olive are in place before inserting pipe insert.
It is not possible to connect Speedfit fittings to Stainless
Steel Pipe.
Fittings to connect imperial
pipe to metric pipe are
shown on page 10.
RELEASE AID
COLD FORMING BEND
BENDING SPRING
PIPE CUTTER
HEAVY DUTY PIPE CUTTER
PIPE CLIPS AND SPACERS
NAIL CLIP
COLLETS
EPDM ‘O’ RING
THREAD WASHER
CONNECTION TO COMPRESSION FITTING
CONNECTION TO IMPERIAL PIPE AND FITTINGS
CONNECTION TO CHROME-PLATED COPPER PIPE
CONNECTION TO MAINS SUPPLY
CONNECTION TO RING MAINS
CONNECTION TO BOILERS
Speedfit can be used on sealed and open vented heating
systems, where boilers are either heating a hot water
storage cylinder or instantaneous hot water such as a
combination boiler. The temperature and pressure limits
of the system must not exceed the maximum values stated
under the heading ‘Working Temperatures and Pressures’.
When using a traditional copper vented cylinder Speedfit
pipe and fittings can be installed with direct connections
to the cylinder.
As shown in the Product Range List, the Speedfit range of
fittings includes valves, taps, adaptors and connectors for
the plumbing of all typical domestic appliances and fittings.
CONNECTING TO OTHER PLUMBING FIXTURES
CONNECTION TO CYLINDER & WATER HEATERS
15 16
For up to 28mm size pipe.
Allows a firmer grip on the
collet when removing pipe.
P ART N O . S IZE MM X M
JGTAPE 50 x 45
FOIL TAPE
Metallic tape to meet NHBC requirements
for plastic pipe to be detected inside walls.