OneFlow® is a sustainable and full-fledged alternative to a traditional water softener. The appliance offers a huge number of advantages in private homes as well as in commercial premises (catering establishments, sports clubs, swimming pools, camp sites, etc.). Here’s a list of all the advantages.

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To guarantee that your OneFlow® continues to work at its best, it is important that you replace your cartridge in time. If you register your OneFlow®, you’ll receive a reminder by e-mail a month in advance. You can purchase the OneFlow® cartridge from your installer or technical wholesaler. Registration is a free service as we think it is important that users of our products always stay free from stubborn limescale.

There are various OneFlow® models available on the market. The price depends on the type of appliance that best matches your consumption. To give you an indication of the cost price for OneFlow®, we recommend that you contact a local wholesaler or installer. This will give you a complete overview. Curious about which model will best help you deal with hard water?

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Tiger pressure reducing valve’s is manufacturer of high quality push-in fittings, pipe and plastic plumbing systems to a wide variety of industries, Tiger fittings are easy to use, simply push the tubing all the way in then pull on the tubing to lock for a high water pressure sealed connection

It’s great that you’re so pleased with your OneFlow® and want to take the system with you to your new home or business premises. When you move home, of course you don’t want to have to purchase a new system to make sure that your drinking water is treated for limescale. Luckily, that’s also not necessary. The OneFlow® can be used without problem at your new address. This means you will benefit from all the advantages offered by this energy-efficient system, you will prevent stubborn limescale, you will have lower energy costs and your electrical appliances will last that bit longer.

Use OneFlow® in open systems/circuits where there is sufficient flow. OneFlow® performs best in open circuits and without the addition of chemical additives, which can affect the OneFlow® performance (e.g. industrial dishwashers). Avoid installation in a closed circuit (e.g. hydronic systems) and in situations with low water flow or standing water. The microcrystals continue to be active for up to 72 to 120 hours, depending on the quality of the incoming water.Avoid introducing water soluble fluxes (solder liquids) to the inside of the device or pipes.

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The casing of a OneFlow® does not have a specific service life. To ensure that your product continues to perform at its best, it is important to replace the cartridge or media once every 2 to 3 years. You can do this very easily yourself. How often this needs to happen depends on the OneFlow® model you selected. The cartridge of the standard OFTWH-R and OFTWH versions need to be replaced once every two years. For commercial tank systems OF948-16-C & OF1054-20-D and the OneFlow+®, the media need to be replaced every three years. The small version, the OF110, needs a replacement once a year.

We have various types of OneFlow® systems available as this enables us to offer everyone the best possible result. The product that’s best for you depends on your consumption and family situation.Please make sure that you select a device that has sufficient capacity for your consumption. When choosing a device, please be aware that OneFlow® should not be used in applications in which there is too much standing water. This example explains what we mean: if you live in a two-person household that uses a solar boiler of 500 litres, the water in this boiler will not flow sufficiently. In other words: the tank will never receive fully freshly-treated water within the 3 to 5 days. This means you will not gain the desired results from the OneFlow® system. If your household comprises four persons and you have a 200 litre boiler, the OneFlow® will retain its efficiency. You should also select a OneFlow® system that has sufficient capacity for your consumption. OneFlow® needs sufficient capacity to provide each household with treated water at peak periods. So, if you have 1 standard bathroom and a family of up to 4 people, we recommend you select the OFTWH-R device. This device can filter up to 22 litres of water per minute. By a standard bathroom, we mean a bathroom with a standard point of supply, such as a shower head. An average shower uses 8 l/min. If water is also used in other places in the home, such as a washing machine, dishwasher, toilet, kitchen tap, etc, the recommended device can continue to supply treated water even during peak periods. If you have a family of four but you have a luxury bathroom with large rain showers, or you have 2 bathrooms and live with 6 people, the OFTWH or OFPSYS would be a better choice. These devices can filter up to 38 litres of water per minute. Uncertain as to which model is best for you? We’d be delighted to help you! Discover quickly and easily here which OneFlow® will bring an end to stubborn limescale for you. Select your OneFlow®

As OneFlow® is not a water softener but uses an innovative technology which improves mains water quality by neutralising hard limescale, soft and harmless limescale particles remain in your drinking water.

One Flow water filter

There are various factors that need to be taken into account before you install OneFlow®: Ensure that you connect the OneFlow® to a clean mains water supply. OneFlow® can cope with a maximum hardness of 30 grains/514 ppm/28.8 D°/51.3 °f Oil and H2S (hydrogen sulphide) should be removed in advance. The water pressure may be between 1.03 and 6.9 bar. If a water pump needs to be installed, this should always be installed after the OneFlow®.

OneFlow® is not a water softener; it actually uses an innovative technology that improves mains water quality by neutralising limescale. The media in the cartridge attract calcium and magnesium minerals in hard water and convert these into microscopic crystals. After formation, these microcrystals break down quickly due to the flow of moving water and are released as inert limescale particles. This means they no longer attach themselves to the surface. Hard limescale is thus eliminated and pipes, heating elements, taps, etc. stay limescale free.

OneFlow® doesn’t need any maintenance, so there are no maintenance contract costs for this limescale prevention system. The only thing you need to do to keep your system operating perfectly is to replace the cartridge every once in a while.

The OneFlow® tank system is guaranteed to be free from material and technical defects for a period of 5 years, starting from the original dispatch date. The OneFlow® media performance is guaranteed for a period of 2 years, starting from the original installation date. This only applies if the media have been installed and used correctly in accordance with the instructions stated in the supplied user manual. Watts Regulator Company guarantees its OneFlow® cartridge system in the following way: The OneFlow® cartridge system is guaranteed to be free from material and technical defects for a period of 1 year, starting from the original dispatch date. OneFlow® cartridges are guaranteed for a period of 1 year, starting from the original installation date. This only applies if the cartridge has been installed and used correctly in accordance with the instructions stated in the supplied user manual. Replacement carbon filters are not guaranteed for any specific period as the service life of the replacement carbon filters can vary significantly depending on local water conditions and the volume of water consumed.

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Our handy connection kit makes it easy for consumers to install OneFlow® themselves. Please always following the instructions stated on the guides. You can also watch various installation videos on our website if you need help installing this system.

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If you chose the OneFlow® limescale neutralisation system, you’re choosing for your health. OneFlow® does not remove any calcium and magnesium from drinking water. This means that all vital minerals remain in the water; minerals you need every day. The OneFlow+® limescale prevention & water filtration contains an integrated 20-micron carbon filter as well as the cartridge. This type does not only protect your pipes from limescale, it also ensures that your water is free from unpleasant odours and tastes. This carbon filter does not remove manganese, iron and other metals.

As all vital minerals including calcium and magnesium remain in the water, the water is healthier for human consumption than water treated with a traditional water softener, which no longer contains these minerals.

OneFlow® is a compact device that’s easy to install. It should always be installed vertically and, depending on the type, it’s possible to install OneFlow® hanging or standing. OneFlow® doesn’t only prevent limescale from forming, it also deals with existing limescale deposits in your pipes and systems. This can considerably extend the service life of your appliances.

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Feel free to contact dealer near you. If you have technical questions, you can, of course, also contact an installer near you.

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If you want to avoid stubborn limescale in your pipes and on your shower walls and taps, but are also concerned about the environment, then the OneFlow® is certainly a solution for you. OneFlow® offers you a full-fledged and sustainable alternative to a traditional water softener. Our products are efficient in various respects, which means considerable savings for you. In contrast to a traditional water softener,

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OneFlow® can be installed immediately after the water meter and connected to the cold water supply. It is important that the product is installed vertical, upright and level. Also make sure that there is sufficient free space. This will make it a lot easier for you to replace the cartridge or media. You should do this once every two or three years, depending on the type of device you purchased. After installation you’ll not need to worry about OneFlow® for a long time.

Do you want to connect the system to new copper pipes? PLEASE NOTE! If copper levels are too high, this will negatively impact the cartridge or media performance in the OneFlow® and may result in the system not operating as it should. Of course, that’s something you don’t want, which is why you should install a bypass or remove the cartridge for four weeks and allow the system to rinse during this period before you start making optimal use of it. After the four weeks you can return the cartridge and enjoy all the advantages offered by OneFlow®.

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The water supply to a OneFlow® should be clean. We have produced a summary of the specific water requirements: see the FAQ section: What factors should I take into account to achieve optimal OneFlow® performance? It is possible to connect a OneFlow® to well water as long as a filter system is installed before the OneFlow®. See the experience from B&B Akemi in Zemst – Belgium

You’ll notice that you’ve got a hard water problem if white, difficult to remove stains or scale can be seen on sanitary appliances. This is known as stubborn limescale. Unfortunately, it is not possible to determine visually the damage you have in your pipes and electrical appliances, such as a boiler or combi boiler. Reduced water pressure is also a clear signal of limescale. The more limescale forms, the smaller the internal diameter of your pipes becomes. Ultimately, this means that water will flow less quickly and this will result in a loss of pressure. If you have hard water, you’ll also notice that in your bills. Limescale makes heating elements and pipes less efficient. That’s why your energy costs increase. You can check online how hard the water supply is from your local water board. If you can’t find this information online, you can ask your installer to carry out a water test to check whether OneFlow® can offer a solution if your water is too hard. It is important that you take action if it is clear that you have stubborn limescale. Not only will this save on your energy bills, it will also extend the service life of electrical appliances and you’ll waste less time and energy on cleaning.

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The number of stains on washing up and in the dishwasher is considerably reduced. As soft limescale does still occur in the water, it is important to mention here that your dishwasher reservoir still needs salt. We recommend that you choose low-phosphate dishwasher products as these are the most suitable. They prevent the occurrence of stains and are also more environmentally-friendly. If you live in a hard water area, you should always use a rinsing agent

Certainly! As OneFlow® does not add or remove anything from the water, the composition of the water remains unchanged and all vital minerals such as calcium and magnesium remain in the water.

Sinks, taps and shower walls remain free of stubborn limescale deposits. This saves a huge amount of cleaning. Small stains may sometimes be left as a result of water evaporation.

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To make the most of this, we recommend that you rinse the water in your boiler after a year. Always follow the instructions on your central heating boiler for this. This keeps pipes and appliances in top condition so they’ll last for years.

Before we tell you how OneFlow® works compared with traditional water softeners and alternatives, it is important to know what hard water and limescale actually are.

Don’t worry. You don’t need to remember when your cartridge needs replacing. If you register your OneFlow®, you’ll receive a reminder by e-mail a month in advance. This will give you plenty of time to make sure that your OneFlow® keeps on working optimally as it always did. You can decide to have your cartridge replaced by your installer, or you could choose to replace the cartridge yourself.

The cartridge for the standard OneFlow® versions: OFTWH-R (22 l/min) and OFTWH (38 l/min) need to be replaced every two years. The larger OneFlow® tank models don’t use cartridges. The medium is dispersed in the tank. This only needs to be replaced once every three years. The cartridge also needs to be replaced once every 3 years in the OneFlow+® (OFPSYS). However, there’s also a carbon filter in this system. This 20-micron carbon filter ensures that chorine, odours, colours and other tastes are filtered from the water. This carbon filter should be replaced once a year, depending on the quality of the incoming water.

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We can imagine that you still have some questions about OneFlow®. That’s why we’ve answered all the frequently asked questions for you below.

These are easy to remove with a damp cloth or sponge. Soap and shampoo residues from water treated by OneFlow® are easier to rinse away than residues from untreated water.

Natural minerals such as calcium and magnesium are present in the ground and surface water. Hard water has a high level of these healthy minerals. The harder the water, the more these minerals are present in the water. Limescale can clog pipes and taps, affect water quality and significantly reduce the service life of electrical appliances. This is annoying as it leads to higher energy bills and electrical appliances need to be replaced more often. OneFlow® is the ideal solution for this. It is the most efficient and environmentally-friendly technology to prevent hard limescale.

Plastic threads are not generally as strong as brass threads. Customers and end users should be aware of this when choosing products for their applications. Over-tightening of plastic threads will cause undue stress and eventual cracking and leakage. The maximum torque figures for BSP and BSPT threads used in Tiger fittings in mating threads conforming to the relevant BS or International thread standards.

OneFlow® is not a water softener, but uses an innovative technology  that improves mains water quality by neutralising limescale. The media in the cartridge attract calcium and magnesium minerals in hard water and convert these into microscopic crystals. After formation, these microcrystals break down quickly due to the flow of water and are released as inert limescale particles. This means they no longer attach themselves to the surface. Stubborn limescale is thus eliminated in pipes, heating elements, taps, etc.

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In contrast to traditional water softeners, OneFlow® does not use any salt to remove limescale. This means that it does not change the composition of the mains water. So, water treated by OneFlow® does not affect your skin.

To make a connection, the tube is simply pushed in by hand; the unique patented Tiger double O’ring locking system then holds the tube firmly in place without deforming it or restricting flow.

OneFlow® handles stubborn limescale without using salt and chemicals. It doesn’t need any electricity. In contrast to traditional water softeners, OneFlow® works entirely autonomously. This saves in consumption costs and also makes it much more sustainable. As no salt or chemicals are added, OneFlow® doesn’t need any rinsing, which means no unnecessary wastage of water. In short, the technology is a particularly sustainable and environmentally-friendly alternative and that is considerably better for our planet.

OneFlow® only needs minimal maintenance. The cartridge or media need to be replaced every 2 or 3 years, depending on the type of appliance. Less limescale results in lower energy bills. This is because appliances and heating systems function better when they’re limescale free.

No. In fact, in contrast to traditional water softeners, OneFlow® uses no electricity and this can result in considerable savings. Traditional water softeners remove vital minerals from hard water through ion exchange. This process doesn’t only need salt, it also requires regeneration or rinsing. This regeneration requires a time configuration, which requires electricity.

There are various OneFlow® models. This ensures that our range can offer a solution for every situation. The dimensions also depend on the OneFlow® model. Here is a list of all the dimensions: Model OFTWH-R (22 l/min) 18 x 18 x 60 cm Model OFTWH (38 l/min) 18.5 x 18.5 x 60 cm Model ONEFLOW+ (OFPSYS) (38 l/min)20 x 20 x 47 cm Model OF948-16-C (60 l/min) 23.5 x 23.5 x 133 cm Model OF1054-20-D (75 l/min) 26.5 x 26.5 x 147 cm Model OF110 (4 l/min) 13 x 11.7 x 34 cm The OneFlow® that’s best for you depends on your consumption and situation. Uncertain as to which model is best for you? We’d be delighted to help you! Discover quickly and easily here which OneFlow® will bring an end to stubborn limescale for you. You can find the Model that suits your consumption needs at this page.

OneFlow® does not remove any calcium and magnesium from drinking water. This means that all vital minerals remain in the water; minerals you need every day. The OneFlow+® limescale prevention & water filtration contains an integrated 20-micron carbon filter as well as the cartridge. This type does not only protect your pipes from limescale, it also ensures that your water is free from unpleasant odours and tastes. This carbon filter does not remove manganese, iron and other metals.

You’ll be able to observe this as white stains may be left on taps and other surfaces. However, these stains do not adhere to surfaces like stubborn limescale and can be removed easily with a damp cloth or sponge. If you install OneFlow® during a renovation project, be aware that during the initial months after installation the water may temporarily appear milky in colour. This indicates an increase in limescale levels in the water as the soft and harmless limescale particles flow through your pipe system while also picking up any microscopic limescale particles that have been stuck in your pipes for years.

Traditional water softeners remove the healthy minerals from hard water through ion exchange. Salt, electricity and a regular regeneration cycle are needed for this. In contrast to OneFlow®, this is not sustainable. These devices have a control valve, return flow, discharge pipe, water supply for regeneration, a brine tank and need space for storing the salt.

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Every device that is installed within the water supply pipes will result in a certain drop in pressure. Of course, you don’t want the installation of a product to result in lower water pressure. That’s why we’ve worked hard to ensure that pressure loss after the OneFlow® is negligible. In short: OneFlow® hardly has any effect on the amount of water that pours from the tap. And that’s great if you’re having a shower or doing the washing up.

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There’s a suitable OneFlow® model available to deal with stubborn limescale in every home, building and situation. You should bear a number of points in mind here. It is important that there is sufficient water flow. OneFlow® technology depends, among other things, on flowing water. If there is insufficient flow, or if there is standing water, the harmless, soft limescale crystals that are formed will resume their original form again after three to five days. You don’t need to worry about this if you’re going on holiday. As soon as water is used again, for instance, by using the kitchen tap, the OneFlow® will start treating water for you again. The water that was standing in your pipes will have been re-converted into untreated water, but this water will have been standing in your pipe system during your holidays, which means that no limescale can form.

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Conditions The OneFlow® system must be installed in applications that are supplied with public water in accordance with EPA guidelines. A fault in a component may never be caused by incorrect use, fire, frost or other natural phenomenon, force or incorrect installation. The device must be installed and used in accordance with local sanitation regulations and in an approved water supply. The device should only be used with water pressures and temperatures that do not exceed our stated specifications. The supplied water should never contain chlorine at more than 2.0 ppm. Pre-treatment is required if chlorine levels are higher than 2.0 ppm. (Please consult your water treatment specialist.) A valid claim relating to the device under guarantee must include required information, including model number, serial number and installation date. Faulty parts will first be examined by the Watts Regulator Company or any authorized representative prior to final approval of the claim under the guarantee agreement. The Watts Regulator Company reserves the right to change or replace parts or equipment with parts or equipment of a similar quality or value to those currently in production.

Of course you want to bring an end to stubborn limescale, but you don’t want a system that makes a lot of noise. And that’s logical because you want to be able to sleep, work or just be at home without annoying distractions. Luckily, OneFlow® doesn’t make any noise while it brings an end to stubborn limescale. So you can enjoy living in your home even more.

OneFlow® is not a system that requires much maintenance. One of the biggest differences between OneFlow® and traditional water softeners is that with OneFlow® you don’t need a maintenance contract. So you also don’t need to call on your manufacturer to come and configure or reconfigure the device. The only thing you need to do to keep your system operating perfectly is to replace the cartridge every once in a while. An installer can, of course, help you easily with this, but you can also do this yourself. We recommend that you register your OneFlow® so that you’re certain that you’ll replace the cartridge in time. If you do this you won’t be faced with the stubborn limescale that would appear if you were to wait too long with replacing the cartridge.

Restrictions Our guarantee obligation with respect to the water tank or the control valve are limited to arranging a replacement or, if we opt for this, repairing the part or the parts as we deem appropriate and only if the defect is shown to fall within the guarantee period as stated above. Replacement parts will be delivered F.O.B. by the factory closest to the owner, without costs, with the exception of transport costs and the costs for local labour, if these apply. Our guarantee obligation with respect to the OneFlow® media is limited to arranging a replacement of the media within the 2 years, counting from the date of the original installation. This replacement media will be delivered F.O.B. by the factory closest to the owner, without costs, with the exception of transport costs and the costs for local labour, if these apply. Damage to the media caused by chlorine, other oxidation media or contamination caused by local water conditions or any other action that falls outside the limits as stated in the Equipment Characteristics, does not fall within this guarantee. THE GUARANTEE STATED HERE IS GRANTED EXPLICITLY AND IS THE ONLY GUARANTEE THAT WATTS REGULATOR COMPANY ISSUES FOR THIS PRODUCT. WATTS REGULATOR COMPANY DOES NOT OFFER ANY OTHER GUARANTEES, EXPLICITLY OR IMPLICITLY. Watts regulator company expressly rejects all other guarantees, explicit or implicit, including, but not restricted to the implicit guarantees of saleability and suitability for a specific purpose. The redress option described under this guarantee shall be the only and exclusive redress option for violations of the guarantee and Watts Regulator Company shall not be responsible for incidental, special or consequential damage, including but not restricted to freight, handling, loss of earnings or repair or replacement costs of other properties that were damaged through incorrect operation of this product, other costs arising from labour costs, delays, vandalism, negligence, contamination caused by foreign bodies, damage through unfavourable water conditions, chemical or other conditions about which Watts Regulator Company has no control. This guarantee shall be declared invalid if any misuse, incorrect use, incorrect application or incorrect installation of the product is determined. Some states do not accept any restrictions with respect to the duration of the guarantee and some states do not accept any exclusion or limitation of incidental or consequential damage. A consequence is that it is possible that the above-mentioned restrictions do not apply to you. This guarantee gives you specific legal rights and it is possible that you may enforce other rights that vary from state to state. To determine your rights, you should consult the legislation as this applies in your state. Insofar as this is in accordance with the applicable legislation in the state, all implicit guarantees that cannot be excluded, including the implicit guarantees of saleability and suitability for a specific purpose, are limited in duration to the applicable guarantee periods as described above. IOM-