Domestic Filters

Filters are designed for mechanical solid impurities. These are usually rust fragments, shavings, sand, or hemp fibres, for example. All of this can impact the water pipes and even destroy expensive equipment and valves. The main water supply network is often not in optimal condition, and in some places, it has been underground for decades. It can happen that a failure occurs in the water supply, allowing impurities to enter the pipes. The task of filters is to clean the water not only after a potential failure.

There are several categories of Honeywell filters. The first are simple filters without backwash, such as the FF06 series (FF06-1AA), and FK06 with an integrated pressure reducing valve (FK06-1AA). Higher quality backwash and up to six times the lifespan of the mesh is achieved with backwash filters (e.g., F74CS-1AA). The pinnacle of the range are filters with double spin technology Honeywell F76 (e.g., F76S-1AA). Filters are also divided according to the type of bowl used. Up to 40°C, transparent bowls are used, but we also offer a variant for higher temperatures (up to 80°C), flanged design, or design with an integrated pressure reducing valve.

Filters without backwash

The backwash is controlled by a ball valve located at the bottom of the bowl. If the filter is dirty, you turn it downwards, open it, and the water that would otherwise go into the house changes direction and starts flowing into the sewer.

Filters with backwash

Backwash filters F74 and F76 are equipped with a special filter cartridge. When the ball valve is turned, the entire insert moves downwards, and the water that normally flows through the outer side of the mesh to the appliance is redirected to the centre, thus cleaning the mesh from the inside.

In the model with double spin technology, a special roller is placed in the centre. It has side openings functioning as nozzles. The water pressure spins it and it starts moving up and down. The nozzles clean the stainless steel mesh from the inside and remove impurities settled on the mesh eyes. This results in much more precise cleaning than with simple backwash filters.

Filters are useful not only in industrial plants but also in apartments or family homes. We recommend their use in places with frequent main network failures. Filters are also suitable in older buildings where steel-cast iron or stoneware pipes are used. In new buildings, their installation is becoming standard.

We supply meshes with fineness from 20 to 500 microns. The most commonly used, which we also recommend for most applications, are those with a fineness of 100 - 200 microns. The number indicates the size of the mesh eye - the smaller, the denser. Unless it is for laboratories or other special operations, a filter with a density of 200 microns is suitable. When using a denser mesh, it is necessary to account for much faster clogging.
For larger flanged filters, or with more contaminated water, meshes with values of 300 and 500 microns are also used.

Not on their own. For example, for pumping water from a pond, it is necessary to precede the filters with sand filtration. This removes coarser impurities and algae from the water, which would otherwise quickly clog the filter and could cause irreversible clogging of the mesh.

It is very individual - it directly depends on the quality of the water. For quality distributions, we recommend checking at least once a month. However, situations may arise where the mesh needs to be cleaned much more frequently. In higher ranges like the Honeywell F74, you will find a rotary wheel on which you set the time of the last backwash.
The same applies to mesh replacement intervals, which depend on the quality of the water and mainly on the frequency of its cleaning. If regular backwashing does not occur, impurities can become compacted, after which the mesh will need to be replaced.

For smaller filters, it is sufficient to place a bucket under the filter to drain the dirty water. For larger filters, or in places where the network pressure is higher, we recommend connecting to the sewer.

We recommend letting the water flow for at least fifteen seconds. It is important to adhere to this time, otherwise, there is a risk of insufficient filter backwash, or even damage to the backwash valve.

Yes, for some filters there is an automatic backwash unit that initiates cleaning at set intervals. The cleaning interval can be set from one hour to three months. The unit is placed directly on compatible filters. It can therefore be added later. The unit, which is essentially a programmable servo motor, is supplied with a plug adapter. In the event of a power outage in the network, operation is backed up by AA batteries.

The meshes are very fine, for domestic applications we recommend those with a size of 100 to 200 microns. If you try to scrub such a fine mesh with a brush, it is very likely to be damaged.
For this reason, the installation of an automatic unit that regularly cleans the filter is suitable. This prevents the owner from remembering the filter only when there is a noticeable drop in pressure, by which time it is often too late to clean the mesh.

No, it only removes coarse mechanical impurities. It does not remove chemical additives, does not change hardness, nor does it capture iron. Other types of filtration are intended for this. However, Honeywell offers special treatment plants that can soften water using an ion-based principle. Salt is added there, which helps remove calcium ions through electrolysis.

The water supplier should have its own shut-off valve and sealed water meter at the water connection. Everything behind it already belongs to the property owner. Usually, another valve follows, installed for potential water meter replacement. We also recommend using a check valve and a pressure reducing valve. However, the length of the water connection can often be a limiting factor. If the length of the fittings exceeds the designated space, the ideal solution is a filter combined with a pressure reducing valve. To prevent its contamination, the pressure reducing valve should be placed in the system after the filter itself. The filter bowl must always face downwards. However, for higher ranges of Honeywell filters F74, this does not necessarily mean horizontal installation — they can be mounted horizontally or vertically and the bowl can be rotated.

With a pressure reducing valve or a filter equipped with one, the desired pressure can be easily set. This can reduce water consumption and also protect the household from pressure fluctuations. If the household is not equipped with a pressure reducing valve, significant water losses can occur in the event of sudden increases. Typically, heating boilers are equipped with a safety valve. In the event of an unaddressed pressure increase in the water supply network, a common mistake is that it leads to bypassing through this valve. A massive water loss is usually only noticed by a significantly higher bill for drinking water.