KwikHEAT - Practical Facilities Management

Save water & improvewashroom qualityDart Valley Systems offer acomprehensive range of watersaving products coupled with unrivalledexpertise in providing cost effectivewater efficient solutions for washrooms.WC Flushing Save 30%The no-touch WC Flushvalve is the most robust andreliable WC Flushing device available for arduousapplications. The importance of the innovativedesign was recognised by the “Enterprise 2000Innovation and Technology Award” .The productsaves 30% to 40% water when retro-fitted to the oldlarger cisterns. The repeatability of flushing isexceptional. Other benefits include the robustness,hygiene, ease of use and aesthetics.Urinal Controls Save 80%The Flushmatic urinal control was awarded “BestEnvironmental Product in Australia”. DVS offer abroad spectrum of urinal flushing solutions, includingbiological sleeves, cleaner deodoriser sleeves,individual sensing urinal controls, PIR groupcontrols, wall mounted or flush ceiling mounted. Formost applications where the cisterns continually filland flush the PIR systems suit retro-fit and areeconomical to install saving around 80% of water.Individual controls are the most cost effectivesolution for new installations and keep the bowlsfreshest.Electronic taps Save 65%No-Touch electronic taps for hand washing typicallysave between 50% and 65%. Used in conjunctionwith TMV3 thermostatic mixing valves these tapsprovide the most convenient water efficient solutionfor handwashing. Other benefits include ease of use,safe pre-set water temperature, hygiene andaesthetics.washroomsSelf Closing push taps Save 40%It is critical to have self closing taps in public toiletsto ensure users do not leave taps running. The notouchelectronic taps are clearly the most waterefficient, and the benefits should be carefullyconsidered. If budgets are not available then selfclosing push taps are the minimum that should beinstalled. They are not as hygienic as no-touch tapsbut are more hygienic than twist or lever taps asafter washing hands they shut of without furthercontact. Toggle levers are available for ease of usefor young children or disabled.No-Touch shower controls Save 30%Water efficient shower heads combined with autoshut off electronic no touch controls can savearound 30% in public showers. The shower controlscan be adjusted to provide a suitable shower timeand when the user is finished can be waved off. Ifthe user does not turn the shower of it will time outand shut off automatically.WC Overflow DetectionA Guide to SelectingUrinal ControlsSometimes we cannot see the wood forthe trees, and such is often the casewhen trying to select an appropriatesolution for Urinal Cleaning.Apart from differences in applications, such as siteconditions, levels of use, and cleaning regimes, theoptimum solution may differ for retro-fit, maintenance,refurbishment or new build.In order to provide some basis for comparing differentsystems we have assumed a facility averaging 50 menusing three urinal bowls 5 days per week. The totalaverage cost per bowl includes an estimate forreplacement cartridges, cleaning, maintenance andoccasional clearing of blockages. We have assumedNational average water/sewage costs of £2.00 per M3,and other costs at approximate market averages. Thecleaning costs also reflect the frequency of cleaningestimated to maintain good standards of freshness.Fill and Flush systems with no urinal controls waste anenormous amount of water with zero benefit. Totalwater use per bowl 105,000 litres per year amountingto £210.00 per bowl, with total costs estimated at£282.00 per bowl per year.This can be addressed by retro-fitting PIR urinalcontrols to existing fill and flush systems. Installation iseasy and provides a very fast payback on the smallinvestment. The first person detected starts a timedelay which is normally set at 15 minutes. Total wateruse per bowl is around 22,000 litres per yearamounting to £44.00. Total costs are estimated at£142.00 per bowl per year.Maintenance is inexpensive but essential. Most retrofiturinal controls are battery operated and usersfrequently neglect to do maintenance. We estimate30% to 40% of urinal controls are not maintained andeventually fail with excess water wasted costing 20times that of maintenance.Waterless and Less Water Urinals can be consideredfor low to medium use areas which have very goodcleaning regimes.Most waterless urinals use replaceable cartridges,designed to reduce blockages and smells. The mostcommon are oil based or biological cartridges. Mostsites use water to clean the bowls and flush throughthe sludge build up in the pipes. Some use buckets ofwater which may amount to around 2,000 litres perOne water survey conducted by DVS in a largeoffice block identified 4 WC cistern valves jammedopen and overflowing wasting 2,500 M3 per annum,it was clear from historic water use that this hadbeen a long term problem.year. Automatic flushing helps keep the bowls freshand wash the sludge through the pipes. Flushing 5times per day would increase the water cost per bowlfrom £4.00 to £11.00 per year which may be a goodinvestment and increase the chances of the systemssatisfying cleaners and users. Estimated total cost peryear for cartridges, water, cleaning, maintenance andblockages is £220.00 per bowl per year.The best option for new installations is individualcontrols. The user is detected at the bowl and whenthey move away a small amount of water is dispensedwhich is enough to clean the bowl face and clear thetrap. Many modern urinal bowls can be flushed withless than 1 litre of water and the controls can normallybe adjusted to suit the bowl. For this calculation wehave assumed 0.8 litres per flush. Water use per yearper bowl is around 11,000 litres equating to £22.00.Total cost including estimates for cleaning,maintenance and blockages £98.00. This systemoffers the freshest most hygienic solution, is verywater efficient, and probably the most cost effective formost new applications.Whatever system is selected, it is most important toensure you do not have fill and flush systems flushing24 hours per day. Ensure controls are fitted andmaintained as uncontrolled urinals frequently accountfor 50% of water RR No.: 11109727