John Mills Speedfit KM39767 - Manual (Page 16)

Fittings and pipe should be kept clean and undamaged before use.
• Sizes. 10mm to 28mm diameter.
• Pipes. Speedfit fittings can be used with:
Copper pipe to BS EN 1057
Speedfit Barrier Pipe to BS7291.
Speedfit fittings cannot be used on stainless steel pipe.
• Standards. Speedfit products are designed and manufactured
under a fully integrated system assessed by B.S.I. to BS EN ISO9001.
They are approved by the WRAS and BBA. Speedfit PEM, PSE and SFM
Fittings and Speedfit Barrier Pipe are Kitemarked to BS7291 Parts 1, 2
and 3, Class S. (Licence No. KM39767)
• Applications.
Mains fed and indirect cold water systems
Vented and unvented hot water systems
Vented and sealed central heating systems
• Do not use for Gas, fuel oil or compressed air applications.
• Working temperatures and pressures
Application Usual working Maximum working Maximum working
temperature, ºC temperature, ºC pressure, bar
Cold Water 20 20 12
(indirect and direct mains)
Central Heating
82 105, short term 3
malfunction at 114
Hot Water 65 95 6
(including unvented cylinders)
• Burst Pressure (fittings). With copper or plastic pipe at 20°C: Speedfit
fittings used with copper or Speedfit Barrier Pipe will withstand pressures
well in excess of normal service conditions.
• High temperatures. Can withstand 114°C intermittently for short periods.
The Speedfit system should not be used on an uncontrolled heat source.
• Insulation. Should comply with BS6700 and BS5422, as for copper.
• Minimum bend radii (PEX)
Pipe diameter 10mm 15mm 22mm 28mm
Min radius with clips 100mm 175mm 225mm 300mm
Min radius with cold forming bend 30mm 75mm 110mm -
• Clip spacing (in mm).
For surface mounted pipes
Pipe Diameter
Clip Spacing
Horizontal Run Vertical Run
10 - 15mm 300mm 500mm
22mm 500mm 800mm
28mm 800mm 1,000mm
Where pipe is concealed, clipping may only be required where necessary.
• Expansion (PEX pipe). 1% on length between 20°C and 82°C.
• Flow rates. Comparable with metal systems.
• Cleaners, inhibitors and descalents. For advice on the replenishment of
additives such as corrosion inhibitors, the following manufacturers should
be contacted: Fernox Manufacturing Limited on 01799 550811 or Sentinel,
BetzDearborn Limited on 0151 420 9595.
• Paint and Chemicals. Use only water or oil based paint. Collet covers
prevent paint ingress into fittings. DO NOT ALLOW CONTACT WITH
oil based jointing compounds, cellulose based paints, paint thinners, paint
strippers, solder flux, acid based descalents or aggressive cleaning products.
• Solder Flux. No fluxes of any types should come into contact with
JG Speedfit Pipe and Fittings. If fluxes are to be used in an environment
where Speedfit is installed, then (1) extreme care should be taken to ensure
that no such contact takes place and (2) JG recommend installers only use
fluxes tested and approved in writing in advance by JG. At the date of this
publication, the only such approved flux is Fernox Flux.
TECHNICAL CHECKLIST -
PLUMBING AND HEATING FITTINGS
29 30
• Applications. Speedfit Underground Fittings are designed to connect
MDPE pipes (MRS-PE80) used above or below ground, to convey
potable water from distribution mains to individual properties.
• Sizes. 20mm and 25mm with adaptors for:-
- Copper to BS2871 Part 1 / BS EN1057. Table X and Table Y.
- Screwed pipe.
- LDPE (to BS1972 Class C and Class D) in 1/2” and 3/4” inch sizes.
• Pipes. Speedfit Underground Fittings can be used with:-
- Blue MDPE pipe to BS6572.
- Black MDPE pipe to BS6730.
- Pipes conforming to ISO161/1, ISO3607 and DIN16893.
• Working Temperatures and Pressures. Maximum working pressure
12 Bar @ 20˚C.
• Standards. Speedfit Underground Fittings are approved by the
Water Regulations Advisory Scheme.
• Performance. The fittings are manufactured from tough plastic
material well able to meet the stringent requirements of the water
industry. They have been approved by the WRAS and, as such,
have passed the ʻpull out testʼ where a force shown below is applied
to a connection between MDPE pipes and a fitting for 5 minutes
without the connection failing.
Size
Test Force 20mm 25mm
Newtons 1900 2500
lbs 427 562
• DO NOT USE FOR Gas, fuel oil or compressed air applications
or hot water.
• Chemical Effects. For below ground applications the fittings require
no additional preparations - coating etc. When used above ground,
avoid contact with aggressive chemical compounds. Protect from frost
where necessary. In the United Kingdom, potable water does not
contain high levels of chemicals (eg chlorine etc) that would adversely
affect Speedfit Underground Fittings.
• Exposure to sunlight. Permanent exposure to direct sunlight will
necessitate lagging the fittings.
• Pipe Inserts. Pipe inserts must be used and fully inserted on all
connections to MDPE or LDPE pipe.
• System Testing. Pressure test to 1.5 times working pressure for 10
minutes before connecting to the mains supply. It is recommended
that all pipe and fitting installations are pressure tested after
installation before handing over to the final user
• Maximum Torque Figures. The maximum torque figures for BSP
and BSPT threads used on Speedfit products are as follows:-
Size Maximum Torque
1/2 3.0 Nm
3/4 4.0 Nm
It is recommended that all installations are checked prior to use to
determine that a seal has been made.
The maximum torque figures quoted for use with Speedfit fittings are
dependent on the mating thread conforming to the relevant British
International thread standards.
TECHNICAL CHECKLIST -
UNDERGROUND FITTINGS
• Applications. Underfloor Heating Installations in solid or timber floors.
• Pipes. 15mm JG Speedfit Barrier Pipe to BS 7291, Parts 1, 2 and 3 Class S.
• DO NOT USE Speedfit UFH Products for Gas, fuel oil or compressed
air applications.
• Floor Insulation. Should be a suitable material and thickness to comply
with current regulations.
• Minimum Bending Radii. For Speedfit B-PEX Pipe is 175mm.
• Expansion (PEX - Pipe). 1% on length between 20˚C and 82˚C.
• Cleaners, Inhibitors and Descalents. For advice on the replenishment of
additives such as corrosion inhibitors, the following manufacturers
should be contacted Fernox Manufacturing Limited on 01799 550811 or
Sentinel, BetzDearborn Limited on 0151420 9595.
• Paint and Chemicals. Only use water or oil based paint. DO NOT ALLOW
CONTACT WITH cellulose based paints, paint thinners or strippers, solder
flux or acid based descalents or aggressive household cleaning products.
• Exposure to sunlight. Speedfit products, when used indoors, are not
affected by sunlight. When used out doors protect from ultra violet light
by lagging or painting.
• Pipe Inserts. Must be used on all installations when using plastic pipe and
should be fully inserted.
• Electrical Components. Electrical products in the Speedfit Underfloor Heating
Systems are designed only to be used in U.K. Electrical Supply situations.
• Electrical Continuity. If Speedfit is used in an existing metal system which
may have been used for earthing, electrical continuity should be reinstated.
• Collet Clips. White and Grey collet clips are used with standard fittings to
prevent accidental pipe disconnection. Red or blue clips provide colour
coding of pipe. Red and blue clips should not be used to prevent accidental
release of pipe.
• Pre-Screed System Testing. To ensure the pipework has been installed
correctly and prior to the screed being laid, it is essential that the system
is checked and hydraulically wet tested.
Testing should be carried out at 2 bar for 10 minutes and 10 bar for
10 minutes.
This testing, combined with other relevant checks, should reveal installation
problems and is regarded as good plumbing practice.
• Pressurisation During Screed Laying & Curing. In accordance with
BS1264-4, the system should be left under pressure at a minimum of 6 bar for
the duration of the laying and curing of the screed.
Under NO circumstances should the UFH System be used to quicken
the screed drying process.
• System Flushing. As is usual practice for any plumbing installation,
flushing of the system prior to the use of JG Speedfit is recommended to
remove any contaminants/chemical residue from elsewhere in the system.
• Vermin. Speedfit products should not be used in vermin infested areas.
• Frost Protection. During the installation process it is important that pipe
containing water be protected from frost.
TECHNICAL CHECKLIST -
UNDERFLOOR HEATING
• Chlorine. Speedfit is not suitable for use in systems where the water
contains high levels of chlorine. e.g. swimming pools, fountains etc.
• Exposure to sunlight. Speedfit products, when used indoors, are not
affected by sunlight. When used outdoors protect from ultra violet light
by lagging or painting.
• Pipe clips. Pipe clips should not be fitted any closer than 60mm from the
end of the fitting. Pipe should be adequately supported by pipe clips to
prevent undue stress (side load) on fittings.
• Pipe inserts. Must be used on all installations when using plastic pipe
and should be fully inserted. Only use a Speedfit Insert with Speedfit Pipe.
• Metal Joists. When ʻcablingʼ plastic pipe through metal joists ensure rubber
grommets are in place to prevent damage to pipe. Use of collet covers or
collet clips on fittings recommended.
• Connection to boilers. A minimum 1000mm run of copper pipe must be
installed between the boiler and the Speedfit system, as per BS5955: Part 8.
• Connection to copper pipe. 450mm is the minimum distance to make
a solder connection on copper pipe inserted into a Speedfit Fitting. Ensure
that any residual flux solder does not come into contact with the fitting.
• Concrete and masonry. Speedfit pipe and fittings can be laid in concrete
and masonry providing they are installed in conduit pipe with access boxes
for the fittings. This is to enable the pipe to expand and provide accessibility
for both pipe and fittings. As stated in Water Regulation Scheme 2.7 and BS
8000 : Part 15, fittings and pipe should be removable for possible replacement.
Insulation is also recommended to protect against heat loss and the effects
of frost.
• Electrical continuity. If Speedfit is used in an existing metal system which
may have been used for earthing, electrical continuity should be reinstated.
• Valves and taps. Plastic 15mm and 22mm valves and taps available from
JG Speedfit Ltd are not suitable for central heating installations.
• Collet Covers. Collet covers provide added security against pipe
disconnection, e.g. the fittings coming into contact with rigid surfaces
and behind dry-lining walls. They are offered in white as standard and
in red or blue to provide colour coding of pipe.
• Collet Clips. Grey collet clips are used with standard fittings to prevent
accidental pipe disconnection. Red or blue clips provide colour coding
of pipe. Red and blue clips should not be used to prevent accidental
release of pipe.
• System testing. To ensure the pipework and fittings have been installed
correctly, whether it be on a new or extended system, it is essential that the
system is checked and hydraulically wet tested. Testing should be at 2 bar
for 10 minutes and 10 bar for 10 minutes. This testing, combined with other
relevant checks, should reveal installation problems and is regarded as good
plumbing practice. However, system testing should not be regarded as a
substitute for correct installation (see also “Making a Good Connection”).
• System flushing. As is usual practice for any plumbing installation, flushing
of the system prior to the use of Speedfit is recommended to remove any
contaminants/ chemical residue from elsewhere in the system.
• British Gas Service has accepted the John Guest Speedfit fittings as being
suitable for open vented and sealed central heating systems and as eligible
for acceptance onto its service contracts.
• Vermin. Speedfit products will need special protection in vermin infested areas.
• Maximum Torque figures (BSP & BSPT). Plastic threads are not generally as
strong as brass threads. Customers and end users should be aware of this
when choosing products for their applications. Overtightening of plastic threads
will cause undue stress and eventual cracking and leakage. The maximum
torque figures for BSP and BSPT threads used on Speedfit plumbing products
in mating threads conforming to the relevant BS or International thread
standards are shown below.
Threads Size Maximum Torque
Plastic 1/2” 3.0 Nm
3/4” 4.0 Nm
Brass 1/2” 4.0 Nm
3/4” 5.0 Nm
It is recommended that all installations are checked prior to use to determine
that seal has been made.
• Side Loads. Fittings should not be subject to excessive side loads and they
should not be used as support brackets. Tubing and fittings should be adequately
supported to prevent excessive side loading.