Installation

  • Acceptability of pipe complying with WIS 4-32-19

    Area of Interest : Installation Topic : Pipes Title : Acceptability of pipe complying with WIS 4-32-19 Clause Reference : Regulation 4(2) Reference Number : I27 Decision Date : February 2011 Pipe and fittings which comply with read more

  • Acceptability of towel radiators connected to the domestic hot water system

    Area of Interest : Installation Topic : Towel radiators Title : Acceptability of towel radiators connected to the domestic hot water system Clause Reference : Regulation 3, G18.2 & G18.4 Reference Number : I36 Decision Date : read more

  • Accessibility of operational fittings

    Area of Interest : Installation Topic : Accessibility Title : Accessibility of operational fittings Clause Reference : Schedule 2 paragraph 11: G10.1 & G10.5 Reference Number : I23 Decision Date : September 2008 The stop read more

  • Accessibility of supply pipes passing through premises in multi-occupancy.

    Area of Interest : Installation Topic : Accessibility of pipework Title : Accessibility of supply pipes passing through premises in multi-occupancy. Clause Reference : Schedule 2 paragraph 7: G7.1 & G10.2 Reference Number : I11 read more

  • Accommodation of thermal expansion

    Area of Interest : Installation Topic : Water heaters Title : Accommodation of thermal expansion Clause Reference : Regulation 3 (2) & Schedule 2 paragraph 15 (2) (a) Reference Number : I39 Decision Date : November 2013 In read more

  • Application of marker tape

    Area of Interest : Installation Topic : Identification of pipework Title : Application of marker tape Clause Reference : Regulation 3 (2) & Schedule 2 paragraph 14 (1) Reference Number : I38 Decision Date : June 2013 To read more

  • Backflow protection on fire protection systems considered to be a fluid category 2 risk

    Area of Interest : Installation Topic : Single check valves Title : Backflow protection on fire protection systems considered to be a fluid category 2 risk Clause Reference : Regulation 3 (2), Schedule 2 paragraph 15 (1) & G 15.29 read more

  • Ban on lead-based solder – declaration from developer/installer

    Area of Interest : Installation Topic : Contamination Title : Ban on lead-based solder - declaration from developer/installer Clause Reference : Regulation 3 & G2.1 Reference Number : I06 Decision Date : October 2001 Water read more

  • Bi-flow taps

    Area of Interest : Installation Topic :Combination taps with separate waterways Title : Bi-flow taps Clause Reference : Regulation 3 Reference Number : I43 Decision Date : November 2014 For a combination tap to be considered as read more

  • BS EN 806: pressure testing requirements

    Area of Interest : Installation Topic : Pressure testing Title : BS EN 806: pressure testing requirements Clause Reference : Schedule 2 paragraph 5 & G5.1 Reference Number : I35 Decision Date : October 2012 Pressure testing read more

  • Clarification of DZR requirement for closed circuits

    Area of Interest : Installation Topic : DZR Title : Clarification of DZR requirement for closed circuits Clause Reference : Schedule 2 paragraph 3 Reference Number : I24 Decision Date : February 2009 Having considered all the read more

  • Colour coding of supply pipes

    Area of Interest : Installation Topic : Pipes Title : Colour coding of supply pipes Clause Reference : Regulation 2 (3) & Schedule 2 paragraph 14 Reference Number : I08 Decision Date : February 2002 Pipes buried within the read more

  • Continued use of fittings lawfully installed under the former Water Supply Byelaws.

    Area of Interest : Installation Topic : Fittings Title : Continued use of fittings lawfully installed under the former Water Supply Byelaws. Clause Reference : Regulation 2(4) Reference Number : I10 Decision Date : February 2002 read more

  • Dead legs

    Area of Interest : Installation Topic : Dead leg Title : Dead legs Clause Reference : Regulation 3 (2) (i) Reference Number : I21 Decision Date : September 2008 Where water is allowed to stagnate there is a risk of read more

  • Deadlegs as surge arrestors

    Area of Interest : Installation Topic : Surge arrestor Title : Deadlegs as surge arrestors Clause Reference : Regulation 3 (2) Reference Number : I18 Decision Date : September 2005 Any system identified as likely to suffer the read more

  • Discharges from condensing boilers

    Area of Interest : Installation Topic : Discharge pipes Title : Discharges from condensing boilers Clause Reference : Schedule 2 paragraph 19 & G19.4 Reference Number : I14 Decision Date : February 2003 The expansion relief read more

  • Equivalent of Table X, Table Y and Table W copper tube

    Area of Interest : Installation Topic : Copper Title : Equivalent of Table X, Table Y and Table W copper tube Clause Reference : Regulation 4(1) (b) Reference Number : I34 Decision Date : January 2012 Following the withdrawal of read more

  • Frost protection for the supply pipe systems to, and on, allotments

    Area of Interest : Installation Topic : Insulation Title : Frost protection for the supply pipe systems to, and on, allotments Clause Reference : Schedule 2 paragraph 4 (b) (ii) Reference Number : I15 Decision Date : October 2003 read more

  • Guidance for installers of irrigation systems

    Area of Interest : Installation Topic : Irrigation systems Title : Guidance for installers of irrigation systems Clause Reference : Schedule 2 paragraph 15 & G15.3 Reference Number : I31 Decision Date : January 2012 If any read more

  • Hose union taps considered as service valves

    Area of Interest : Installation Topic : Servicing valves Title : Hose union taps considered as service valves Clause Reference : Regulation 4 & G11.1 Reference Number : I13 Decision Date : February 2003 Hose union bib taps, read more

  • Inappropriate use of blue coloured pipe

    Area of Interest : Installation Topic : Preventing cross connection Title : Inappropriate use of blue coloured pipe Clause Reference : Regulation 2 (3) Schedule 2 paragraph 14 (1) Reference Number : I02 Decision Date : February read more

  • Installation of copper pipe below ground

    Area of Interest : Installation Topic : Copper pipe Title : Installation of copper pipe below ground Clause Reference : Regulation 4(1)(b) Reference Number : I33 Decision Date : January 2012 Following the withdrawal of BS 2871 read more

  • Installation of expansion vessels

    Area of Interest : Installation Topic : Expansion vessels Title : Installation of expansion vessels Clause Reference : Regulation 3 (2)(i) Reference Number : I20 Decision Date : September 2007 (Revised April 2013) In recognition read more

  • Isolation valves in expansion vessel pipework.

    Area of Interest : Installation Topic : Water heaters - expansion water Title : Isolation valves in expansion vessel pipework. Clause Reference : Regulation 3(2) (i) & Schedule 2 paragraph 11 Reference Number : I07 Decision read more

  • Location of pipes under solid floors

    Area of Interest : Installation Topic : Pipes Title : Location of pipes under solid floors Clause Reference : Schedule 2 paragraph 7(1) Reference Number : I05 Decision Date : June 2001 (Revised October 2011) Where pipes, other read more

  • Mains fed water storage heaters of 15 litres or less.

    Area of Interest : Installation Topic : Water heaters - expansion water Title : Mains fed water storage heaters of 15 litres or less. Clause Reference : G17.1d Reference Number : I09 Decision Date : February 2002 Although it is read more

  • Marking to show intended flush volume

    Area of Interest : Installation Topic : WCs flush volume Title : Marking to show intendedflush volume Clause Reference : Regulation 4 & Schedule2 paragraph 25 (f) Reference Number : I42 Decision Date : June 2014 As part of read more

  • Maximum and minimum supply pressure

    Area of Interest : Installation Topic : Supply pressure Title : Maximum and minimum supply pressure Clause Reference : Regulation 4 (1) (b) Reference Number : I22 Decision Date : May 2009 There is no legal requirement in respect read more

  • Need for boundary stopcocks

    Area of Interest : Installation Topic : Stopcocks Title : Need for boundary stopcocks Clause Reference : Schedule 2 paragraph 11: G10.3 Reference Number : I01 Decision Date : October 2000 Where an Intex or an equivalent meter read more

  • Plastics pipes - test requirements.

    Area of Interest : Installation Topic : Pressure testing Title : Plastics pipes - test requirements. Clause Reference : Schedule 2 paragraph 12 & G12.3 Reference Number : I03 Decision Date : June 2001 The Water Supply (Water read more

  • Provision and location of common or separate supply stop valves in buildings

    Area of Interest : Installation Topic : Stop valves Title : Provision and location of common or separate supply stop valves in buildings Clause Reference : Schedule 2 paragraph 11: G10.3 & G10.4 Reference Number : I12 Decision read more

  • Proximity of plastic supply pipes, sewers and drains

    Area of Interest : Installation Topic : Pipework Title : Proximity of plastic supply pipes, sewers and drains Clause Reference : Schedule 2 paragraph 8 Reference Number : I19 Decision Date : February 2007 Where plastic supply read more

  • Re-using an existing supply pipe

    Area of Interest : Installation Topic : Supply pipe Title : Re-using an existing supply pipe Clause Reference : Regulation 3 Reference Number : I29 Decision Date : October 2011 Whilst re-using an existing supply pipe to supply read more

  • Relative positioning of utility service

    Area of Interest : Installation Topic : Utility pipes Title : Relative positioning of utility service Clause Reference : Schedule 2 paragraph 4 & G4.15 Reference Number : I28 Decision Date : June 2011 Having gained read more

  • Repairing lead pipe

    Area of Interest : Installation Topic : Lead pipe Title : Repairing lead pipe Clause Reference : Regulation 2(4) Reference Number : I25 Decision Date : February 2010 Whilst repairs using new lead pipe are prohibited under read more

  • Requirements for an overflow for a cistern supplied via a float valve

    Area of Interest : Installation Topic : Overflow arrangements Title : Requirements for an overflow for a cistern supplied via a float valve Clause Reference : Schedule 2 paragraph 16 (4) (a) Reference Number : I16 Decision Date : read more

  • Safety valves discharge arrangements for multiple systems

    Area of Interest : Installation Topic : Safety valve discharge Title : Safety valves discharge arrangements for multiple systems Clause Reference : Schedule 2 paragraph 14 Reference Number : I32 Decision Date : January 2012 read more

  • Screwdriver operated spherical valves

    Area of Interest : Installation Topic : Stop valves Title : Screwdriver operated spherical valves Clause Reference : Regulation 3 (2) (i) & G10.1 Reference Number : I37 Decision Date : March 2013 For ease of operation and to read more

  • Stop valves – for two or more premises with common supply or distributing pipes

    Area of Interest : Installation Topic : Stop valves Title : Stop valves for two or more premises with common supply or distributing pipes Clause Reference : Schedule 2 paragraph 11: G10.3 & G10.4 Reference Number : I04 Decision read more

  • Supplies in cemeteries & graveyards

    Area of Interest : Installation Topic : Pipework Title : Supplies in cemeteries and graveyards Clause Reference : Schedule 2 paragraph 8 Reference Number : I26 Decision Date : May 2010 To minimise the risk of ingress, supply read more

  • Supplies to equipment used exclusively for fire fighting purposes

    Area of Interest : Installation Topic :Backflow protection Title :Supplies to equipment used exclusively for fire fighting purposes Clause Reference : Regulation 3 & Schedule 2 paragraph 15 (1) Reference Number : I41 Decision read more