F76S-2AA Honeywell water filter with backwashing

Effective system protection and continuous water flow

The F76S-2AA was designed as a mechanical filter for use in installations where it is necessary to capture rust particles, grains of sand, hemp fibers, and similar solid contaminants. The use of backwashing keeps the filter operational without interrupting the supply of filtered water to the installation.

All components of the device meet the requirements of current DIN/DVGW standards. This model is suitable for both domestic and industrial installations.

Key features and benefits

• Filtered water is supplied even during backwashing.
• The patented backwashing system is fast and allows the filter to be cleaned using a small amount of water.
• A special setting ring indicates when the next backwash should be carried out.
• The filter can work with an automatic backwashing unit.
• The large filtration area supports efficient device operation.
• The transparent filter housing made of impact-resistant synthetic material makes it easy to monitor the contamination level of the cartridge.
• The replaceable filter element and housing make servicing and continued operation easier.
• Very simple operation makes it suitable both for home use and for more demanding installations.
• Manufactured in accordance with KTW recommendations for drinking water.

How the backwashing filter works

The design of the Honeywell F76S-2AA model was developed so that cleaning the filter mesh is effective and convenient, without the need to dismantle the device during standard servicing.

• The filter insert consists of an upper and a lower section.
• In the “filtration” knob position, the upper filter insert is closed so that water passes only through the lower, main insert from the outside to the inside.
• After opening the ball valve to perform backwashing, the main filter insert moves downward until the water supply from the outside is shut off. At the same time, the water flow to the upper part of the filter is opened.
• The water used for cleaning passes through the screen, rotor, and main filter insert from the inside to the outside. This means that the insert is thoroughly cleaned over its entire surface at full inlet pressure.
• The filter automatically returns to the operating position after the ball valve is closed.
• The internal rotor flushes contaminants adhering to the mesh through the discharge openings.

Device construction

The filter consists of the following components:

• housing with pressure gauge,
• threaded connections,
• fine-mesh filter insert,
• transparent filter housing,
• ball valve with drain cover,
• box wrench for the filter housing.

Materials

The choice of materials is important for durability, operating resistance, and safe filter operation in a water installation.

• Housing made of dezincification-resistant brass.
• Threaded connections made of brass.
• Filter insert made of stainless steel.
• Filter housing made of red brass or impact-resistant transparent synthetic material.
• Seals made of nitrile rubber (NBR).

Installation guidelines

Correct installation affects filtration efficiency, ease of use, and ease of maintenance.

• Horizontal installation with the filter housing facing downward – this position ensures optimum efficiency.
• Installation of shut-off valves on both sides of the water meter.
• Ensure access to the device so that the pressure gauge is clearly visible – with the transparent filter housing, the contamination level of the filter mesh can be easily determined, which simplifies maintenance and inspection.
• Install directly downstream of the water meter in accordance with DIN 1988, Part 2.

Operation and ease of use

The F76S-2AA model was designed for everyday, practical use. The transparent housing allows the contamination level of the insert to be assessed on an ongoing basis, and the special setting ring helps determine the moment for the next backwash. Thanks to this, the user can maintain high filtration efficiency without complicated service procedures.

The possibility of working with an automatic backwashing unit further increases operating convenience in more extensive installations. This solution is particularly useful where the water filter operates intensively and should be cleaned regularly with minimal user involvement.

Application

Honeywell F76S-2AA performs well wherever effective protection of fittings, valves, water meters, and downstream installation components against mechanical impurities is required. The filter can be an important preliminary stage before other devices responsible for water treatment. In practice, it complements installations using more advanced solutions such as an osmotic filter, reverse osmosis filter, reverse osmosis, or a complete reverse osmosis system.

Additional important information

• Connection size: 2"
• KVS value: 22

Technical specification

FAQ