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Race Glaze Water Filter 14 Litre

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Product image of Race Glaze Water Filter 14 Litre
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Our Price:£189.99 (inc VAT)
Product Code:RG-Filter-14L
Availability:In Stock
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Customer Rating:Average Customer Rating: 5 out of 5 for the Race Glaze Water Filter 14 Litre read reviews
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Race Glaze Water Filter 14 Litre - Features

  • Leaves no water spots even without drying off
  • Connects to your hosepipe or pressure washer effortlessly
  • Use to fully wash or just final rinse to reduce usage - the latter for best economy
  • 14 litre capacity, weighs 10kg, 100cm total height
  • Typically 1,105+ litres of pure filtered water in really hard water areas - results depend on local water hardness, softer water is more typical in most areas
  • Supplied ready to use, pre-filled with MB115 resin manufactured under ISO 9001 and ISO 14001 certification in Belgium - not China or India
  • Refillable with new filtration resin granules - so much lower cost long term - £90 for refills
  • Supplied filled with resin and 3/4" threads for male adapters for Hozelock hosepipe fixings (adapters not supplied)
  • Refilling takes 5 minutes
  • No need to empty vessel of water between washes but advisable to run 2-3 litres through every 2 weeks in summer
  • Shipping to Northern Ireland - due to size/weight there is a supplement of £17 over our standard shipping rate.

Race Glaze Water Filter 14 Litre - Description

New, taller and 30% more efficient water filter to make your car washing easier - no white water spots and no need to dry the car. Saves time and reduces marring and drying risks.

See video here: https://youtu.be/GCIaB-i91Tg

This new 14L filter produces around 1,105 litres of pure zero parts per million filtered rinse water before the resin needs replacement (buy 2 x 7L refill bags). Our smaller, 7L vessel produces 415L, so this new, larger unit is significantly more economical. In comparison to other, 'window cleaner suppliers' units, the combination of our resin and taller filter makes this more economical. See our detailed explanation why below. NOTE: this is based on Harpenden town water at 420ppm - some of the worst in the UK. Most customers will achieve significantly greater volume of pure what than this.

Suitable for use with a pressure washer but ensure you buy the £1 Mesh Exit Filter.

Note that as it is tall and slightly top heavy, you will need to secure it upright - we supply wall brackets which will achieve this. It is illustrated with our 7 Litre filter.

The use of "mixed resin bed" water filters to remove all of the dissolved impurities has long been established in industries such as Pharmaceuticals, electronics and metal surface treatment. More recently, large scale car wash systems (such as tunnel washes), window cleaners and horticulturalists have also been using the products to produce water free from impurities. Note: filled with 14L of resin and ready to use.

For the car wash and window cleaning industry, the advantages are that using water which contains no dissolved impurities allows the user to leave the car or window wet, to dry naturally and with no trace of water marks.
The use of these filters is not simply a case of just connecting up a unit and running water through it though.

The size and shape of the unit has a big impact on the maximum flow rate of the water through the unit, the volume of water that can be treated before the resin needs changing and also the quality of the water produced. The performance of a water filter comes down to contact time between the water and the mixed bed resin within the unit. The longer the contact time, the better the quality of the water will be, as the resin has longer to remove the dissolved ions (or impurities).

The best way to achieve long contact time is to have a good amount of resin in relation to the flow rate of the water. This is represented by what is known as the 40 bed volumes per hour rule. That is the bed volume of resin in the unit multiplied by 40 which gives the optimum flow rate of water for that sized unit per hour. So a unit with 6 litres of resin in should (theoretically) be able to treat up to 240Lts per hour. In real terms this rule is rarely adhered to however, but does give a good guideline to the effectiveness if individual units.

Unfortunately the story doesn´t end there as the "aspect ratio" of the filter also needs to be taken into account. This is basically the height of the filter divided by the diameter. The bigger the aspect ratio (i.e. the taller and thinner the unit) the better the performance will be. This is because the water has a greater depth of resin to pass through and therefore the resin has a greater chance of removing all of the impurities.
A narrower diameter filter will also ensure that the water is distributed across the whole cross sectional area of the filter, thereby using all the resin bed to its maximum capacity.

The standard Race Glaze 7L filter is a 6" diameter by 18" high vessel, which has an aspect ratio of 3. The vast majority of window cleaning filter products are based either on 8"diameter by 17" high vessels which only have an aspect ratio of 2.1 or a 7" by 13" vessels which only has an aspect ratio of 1.9. As such these units can suffer with the external edges of the resin not being fully utilised, and therefore giving lower capacity than the volume of resin would suggest. In the window cleaning industry this isn´t so much of a problem as the filters are generally used as the final stage of a multiple stage purification process.
As such the water is already quite pure before it gets to these filters, so any shortfall in efficiency isn´t really noticed as they have such a low mineral load anyway.

With mains water however the load on the resin is much higher, with the mineral content of the water often being tens of or even a hundred of times higher than the water from the window cleaning purification process.

The new Race Glaze 14L filter is a 6" diameter by 35" high vessel having an aspect ratio of 5.8, far in excess of anything else available on the market. Coupled with a large resin capacity of 14 litres this filter now has unrivalled capacity for those who like to use a lot of water when rinsing their car.
The tested capacity figures also bear this theory out.

We filled 3 separate vessels with the same mixed bed resin (Purolite MB400) and tested the overall capacity at the same standard flow rate (6 litres per minute) using Harpenden towns mains water at a TDS of 420. The volume of water produced before the quality reached 10ppm (still good enough to no give spots, but a sign that the resin bed is beginning to fail from its initial 0ppm reading) were as follows:-

• Race Glaze 6" by 18" 7L filter gave 415 litres of water from 7 litres of resin.

• Window Cleaning type 8" by 17" filter gave 480 litres of water from 10 litres of resin.

• Race Glaze 6" by 35" 14L filter gave 1105 litres of water from 14 litres of resin.

You can see from these figures that by simply using a taller thinner filter you significantly increase the capacity of the unit from 59 litres of water per litre of resin with the 6x18 to 79 litres of water per litre of resin with the 6x35.

So what´s the downside then?
The reason the window cleaning industry tend to use 8x17 vessels is that they tend to be a bit dumpier and if stored in a moving van (as they generally are) they will be more stable than a taller thinner unit. Clearly a 6" diameter by 35" high filter is going to be top heavy and more likely to fall over, so needs to be secured, but if sited in your garage then securing the filter shouldn´t be a problem. We do offer a heavy duty wall bracket which will do the job.

The only other downside is that the old trick of "backwashing" the filter probably won´t give you extra capacity as the filter has used all of its resin bed up by being efficient in the first place. The backwashing process (where the inlet and outlet connections are swapped over and water passed upwards through the filter) moves the resin bed around and re-classifies some of the un


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Race Glaze was established in 1994 to provide easy to use car care and detailing products which provide superb results. Our range has widened and we now offer other complementary branded products which meet our high standards. So from this new 2010 website you'll find Car Wax, Car Polish, Battery Chargers, Battery Conditioners for 6 volt, 12 volt, 24 volt applications, Tailor Made Car Covers, Universal Car Covers. We stock leading brands such as CTEK, Renovo, Mitsubishi, Hindsight, X-Dry and with dedicated advisors available to help, RaceGlaze makes shopping online for car and bike care products and accessories simple, fast and reliable.
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