www.arrowvalves.co.uk copyright 2005-20131 arrow valves ltd – the water regulations solution...
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www.arrowvalves.co.uk copyright 2005-20131
Arrow Valves Ltd – The Water Regulations Solution Specialist
www.arrowvalves.co.uk copyright 2005-20122
Hose Union Tap Applications
• Car Parks• Private Residential and Public Gardens• Washdown• Garages and Vehicle Washing• Commercial and Industrial Yards• Building Sites• Retail Parks• Golf Courses and Bowling Greens• Caravan Sites• Garden Centres• Marinas• Dairies and Food Preparation
www.arrowvalves.co.uk copyright 2005-20123
Hose Union Taps – Backflow Prevention
Applications can be categorised depending on the type of premises or the use, as either:
House - (domestic)
Non-house - (commercial)
The Regulations do not define “Domestic”.
Generally domestic means used in a house.
The term house includes flat and bungalow.
“House Garden” includes recreational area.
The Regulations do not define “Commercial”.
Generally commercial means not used in a house environment.
Non-house situations include offices, factories and schools
Agricultural and horticultural applications are considered
non-house.
www.arrowvalves.co.uk copyright 2005-20124
House Gardens & Similar Applications
G15.20
Taps to which hoses are, or may be, connected and located in house garden locations are to be protected against backflow by means of a double check valve.
The double check valve should be located inside a building and protected from freezing.
Double Check Valve(model ED132)
www.arrowvalves.co.uk copyright 2005-20125
Hose Union Taps and Backflow
Courtesy of WRAS
Proposed installations require the water company to “risk-assess”
G15.18
Any taps and fittings used for supplying water for non domestic applications such as commercial, horticultural, agricultural or industrial purposes should be provided with:
a. Backflow protection devices appropriate to downstream fluid category; and,
b. Where appropriate, a zone protection system.
www.arrowvalves.co.uk copyright 2005-20126
‘I’ve had my installation risk assessed, now what?’
Fluid Category 5
Fluid Category 4
Fluid Category 3
To be supplied via AB air gap e.g. Break Tank & Booster Set model BTAB
Reduced Pressure Zone (RPZ) Valve (BA device), or DB Pipe Interrupter e.g. Standpipe model SPBA
Double Check Valve (ED) e.g. Standpipe model SPED
www.arrowvalves.co.uk copyright 2005-20127
What Hose Union Tap should I use?
YESSee
later slide!
Does it need to be inconspicuous?
minimising the possibility of vandalism and injury
NO
YES
“Conceal-A-Tap”
Model HUC
Tap Box / “Tap Guard”
Model HUTB/S/T/G
Is therea building to
fix to?NO
www.arrowvalves.co.uk copyright 2005-20128
What is a “Conceal-A-Tap” Wall Recessed, Vandal-Proof, Frost-
Proof
Ideal for schools and public buildings
Key Points:
Recessed into thermal envelope of the building and therefore offering:
• Frost protection
Minimal exposed parts reducing:-
• Risk of injury
• VandalismClosed Open
When used with the “Conceal-A-Tap” installation kit provides Fluid Category 3 protection (includes Double Check Valve)
www.arrowvalves.co.uk copyright 2005-20129
What is a “Conceal-A-Tap”?Wall Recessed, Vandal-Proof, Frost-
Proof
Model HUC
www.arrowvalves.co.uk copyright 2005-201210
What is a Tap Box?Wall Mounted, Lockable, Frost
Resistant
The tap box is tamperproof by means of a hinged lid, which can be padlocked shut.
Foam insulation around the valve provides an element of frost resistance.
HUTB is rear entry, with copper tube passing through the wall, providing additional frost protection
HUTBS is surface entry enabling “daisy-chaining”
HUTBT is top entry with supply pipe surface run above Tap Box
www.arrowvalves.co.uk copyright 2005-201211
What is a “Tap Guard”?Guarded Hose Tap with Pipe Cover
Supplied with Servicing Valve, Double Check Valve, insulation, hose connector plug and ten stainless steel screws.
The tap box is tamperproof by means of a hinged lid, which can be padlocked shut.
“Tap Guard” (model HUTG)(shown with optional hose guard)Polished stainless housing.Incorporates Servicing and Double Check Valves
www.arrowvalves.co.uk copyright 2005-201212
What if I don’t have a building to fix to?
NO
Does it need to be inconspicuous?
minimising the possibility of vandalism and injury
NO
YESBelow Ground
Tap
Model HUBG
Is therea building to
fix to?
Fluid Cat 3Standpipe
Model SPWPSC
Fluid Cat 3Standpipe
Model SPTBFluid Cat 4Standpipe
Model SPBA
Fluid Cat 3Standpipe
Model SPED
Fluid Cat 3Standpipe
Model SPWPFluid Cat 3Standpipe
Model SPTG
www.arrowvalves.co.uk copyright 2005-201213
What is a Below Ground Tap?Inconspicuous, Frost Resistant
To be supplied via AB air gap e.g. Break Tank & Booster Set model BTAB
Use where standpipe unsuitable.
www.arrowvalves.co.uk copyright 2005-201214
Which Standpipe?Model SPED
Double Check Valve provides Fluid Category 3
protection
Casing provides a degree of frost resistance
Padlock required to hold cover shut, making the
Standpipe tamperproof
Model SPBA
Includes Reduced Pressure Zone (RPZ)
Valve for Fluid Category 4 protection
Casing provides a degree of frost resistance
Tamperproof if supplied with padlock
Model SPTG
Double Check Valve provides Fluid Category 3
protection
Flanged base designed to be bolted to horizontal
hard surfaces – e.g. flat roofs
Hinged tap cover can be secured using optional
padlock
www.arrowvalves.co.uk copyright 2005-201215
Which Standpipe?
Model SPWPSC
Standpipe with self closing non hose tap and bucket shelf
Incorporates Double Check Valve providing Fluid Category 3 protection
Model SPTB
Miniature Tamperproof Standpipe – ground mounting
Incorporates Double Check Valve providing Fluid Category 3 protection
Model SPWP
“WaterPoint” with internal shelf, which recesses into
the top cap when not in use, preventing injury
Padlock required to hold cover shut, making the
Standpipe tamperproof
Incorporates Double Check Valve providing Fluid Category 3 protection
www.arrowvalves.co.uk copyright 2005-201216
Standpipe Installation
Installation
750 mm
MDPE Pile
Standpipe
www.arrowvalves.co.uk copyright 2005-201217
Hand Held Hoses
G15.17
Hand held hoses should be fitted with a self closing mechanism at the outlet of the hose.
Medium DutySpray Gun
www.arrowvalves.co.uk copyright 2005-201218
For further guidance or to discuss your particular application,
please contact us:
01442 823123 info@arrowvalves.co.uk
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