Metal window frames are not required to be supplementary bonded unless they are electrically connected to the metallic structure of the bonding. Metal baths supplied by metal pipes do not require supplementary bonding if all the pipes are bonded and there is no other connection of the bath to earth. All bonding connections must be accessible and labelled “Safety Electrical Connection – Do Not Remove”. Speedfit Barrier Pipe is manufactured to BS7291 Parts 1, 2 and 3 Class S and is kitemarked.
It is made up of 5 layers, the centre of which is a blue coloured oxygen barrier which prevents the ingress of air into the system, thereby reducing the effect of corrosion on metal components. Because of its low thermal conductivity, when carrying hot water, Speedfit pipe is cooler and therefore safer to touch. Relatively low heat loss through radiation means that a system retains its heat longer and delivers hot water more quickly and with less wastage than a metal system. The pipe is available in coils and straight lengths. Pipe markings are spaced to aid the making of a good connection when using a Superseal Pipe Insert. For general guidance on pipework sizing, please refer to BS6700 or the Institute of Plumbing Engineering Services Design Guide. Speedfit fittings are suitable for pipes within ±0.1mm of nominal size.
They can be used with copper pipe to BS EN 1057 or Speedfit plastic pipe. The Product Range List shows the fittings available for reducing pipe diameters within the system. Speedfit pipe is available in straight lengths and coils. Pipe Diameter Straights 2m – 15mm 22mm – 3m – 15mm 22mm 28mm 6m – 15mm 22mm 28mm Coils 25m 10mm 15mm 22mm – 50m 10mm 15mm 22mm – 100m 10mm 15mm – – 120m – 15mm – – 150m – 15mm – – Metal Foil Tape. JG Speedfit aluminium foil tape can be used to fulfil the NHBC requirements for the identification of location of plastic pipes in or behind a wall surface by a metal detector. It features a bright aluminium finish, rubber/resin high-tack adhesive and quality siliconised backing paper to allow the easy handling of short, cut lengths. Gentle bends can be made with pipe clips on either side of the curve, positioned to maintain the bend radius. Internal Bending Springs are available in sizes from 10mm to 22mm. Tighter bends can be achieved by using the cold forming bends shown among the products on this site. It is also possible to bend Speedit Pipe using a standard pipe bender. The pipe should not be heated with a blowlamp or hot air gun. Minimum bend radii for Speedfit pipes are as follows: Min Radius Pipe Diameter 10mm 15mm 22mm 28mm with Cold Forming Bends 30mm 75mm 110mm – with Clips 100mm 175mm 225mm 300mm. For bends of radii smaller than those shown, standard elbow fittings are recommended. There are two types of pipe clip in the Speedfit range. Firstly, a nail clip is used for fixing to timber when running concealed pipework (i.e. This clip takes less time to fit and is compact which allows pipework to be fixed close together when space is at a premium. The second type uses a screw and, therefore, takes a little longer to fix. When pipes are required to cross over, it is possible to add a spacer to the clip. This will give room between the pipe and the wall to allow the pipes to cross over. If pipework needs to be insulated, using the spacer will give room for the lagging to be applied. Pipe clips should not be fitted any closer than 60mm from the end of the fitting to allow for expansion. Pipes should always be adequately supported to prevent undue stress or side load on the fittings. Pipe Diameter Clip Spacing Horizontal Run Vertical Run 10 – 15mm 300mm 500mm 22mm 500mm 800mm 28mm 800mm 1,000mm. For general guidance on pipework sizing, please refer to BS6700 and BS5449 or the Institute of Plumbing Engineering Services Design Guide. Speedfit fittings are suitable for connection to pipe sizes within ±0.1mm of nominal size.
The maximum heat carrying capacity and flow of Speedfit pipe, based on 1.2m/s velocity and an 11°C temperature drop is shown in the table below. Pipe size Max Capacity KW Max Flow litres/sec Headloss m/m pipe 10mm 1.948 0.042 0.283 15mm 5.941 0.129 0.319 22mm 13.604 0.295 0.084 28mm 21.991 0.478 0.062. The insulation requirements for Speedfit pipe are the same as those for copper and should comply with BS6700 and BS5422. The flexibility of Speedfit pipe gives it the ability to be threaded through concealed or inaccessible spaces without disruption to surrounding structure, making major savings in installation time.
Pipework can be “cabled” through drilled holes in joists and rafters. Therefore, pipework can be installed after floorboards have been laid if access is available from the lower floor before ceilings have been installed. This makes site work far safer as the installer does not have to balance on open joists with the risk of dropping tools or equipment on other people below. This will also eliminate the risk of damage by floorboard nails.