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F76S-11/4AA Honeywell filter with backwashing
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Honeywell F76S-11/4AA is a fine mesh filter with backwashing for water installations. It captures mechanical impurities, including rust Read moreShow less
Honeywell F76S-11/4AA is a fine mesh filter with backwashing for water installations. It captures mechanical impurities, including rust particles and sand, ensuring a supply of filtered water even during the cleaning of the mesh. The transparent housing facilitates contamination monitoring, and the pressure gauge allows for monitoring operational parameters. Threaded connection 11/4".
Benefits
- Captures sand, sediment and rust particles
- Cleaning by backwashing
- Water supply during filter rinsing
- View the cartridge through the clear bowl
Specifications
F76S-11/4
9998 Items
- Connection size
- 1 1/4″
- Filtration rating
- 100 µm
- Maximum flow
- 275 l/min
- Maximum flow
- 16.5 m³/h
- Maximum working pressure
- 16 bar
- Maximum working temperature
- 40 °C
View full specifications
- Minimum working pressure
- 1.5 bar
- Model
- F76S-11/4AA
- Product type
- Self-cleaning filter
- Technology
- Mechanical filtration
Description
Honeywell F76S-11/4AA is a professional water filter with backwashing, designed to protect water systems in residential buildings and industrial applications. The fine mesh filter effectively captures mechanical impurities such as rust particles, hemp fibers, or sand grains, while maintaining a continuous supply of filtered water even during screen cleaning. It is a practical solution supporting water treatment and the entire water filtration system wherever reliability, easy operation monitoring, and convenient use matter.
Backwashing filter for effective system protection
The F76S-11/4AA model was designed as an efficient fine mesh water filter that protects fittings, valves, appliances, and sections of the installation against mechanical deposits. It captures foreign bodies present in the water, including rust particles, hemp fibers, and sand, reducing the risk of failures and premature wear of system components.
A major advantage of this solution is the ability to perform backwashing without shutting off the supply of filtered water. This makes the filter suitable for both domestic water installations and industrial environments where uninterrupted operation is important.
All components of the device meet the requirements of current DIN/DVGW standards. The design has also been manufactured in accordance with KTW recommendations for drinking water.
Key advantages of the Honeywell F76S-11/4AA filter
- 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 bowl made of impact-resistant synthetic material makes it easy to monitor the degree of contamination of the cartridge.
- The replaceable filter insert and bowl make servicing and continued operation easier.
- Very simple operation supports everyday use.
- Manufactured in accordance with KTW recommendations for drinking water.
Operating principle
The Honeywell F76S-11/4AA filter operates based on a well-designed cartridge structure and an effective backwashing mechanism, enabling thorough cleaning of the filter screen without disassembling the device.
- The filter insert consists of an upper and a lower part.
- With the knob in the “filtration” position, the upper filter insert is closed so that water passes only through the lower main insert from the outside to the inside.
- When the ball valve is opened to perform backwashing, the main filter insert is moved downward until the water supply from the outside is stopped. At the same time, the water flow to the upper part of the filter is opened.
- For connection sizes from 1/2" to 11/4", backwashing uses the so-called double spiral method, allowing simultaneous cleaning of the filter screen in the upper and lower parts of the filter insert.
- 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 impurities adhering to the screen out through the discharge openings.
Design and contents
The filter design was developed with durability, easy handling, and convenient access to working components in mind.
- Housing with pressure gauge
- Threaded connections
- Fine mesh filter insert
- Transparent filter bowl
- Ball valve with drain cover
- Box wrench for the filter bowl
Materials
The selection of materials affects corrosion resistance, service life, and safe operation in the water installation.
- Housing made of dezincification-resistant brass
- Threaded connections made of brass
- Filter insert made of stainless steel
- Filter bowl made of red brass or impact-resistant transparent synthetic material
- Seals made of nitrile rubber (NBR)
Installation and installation guidelines
Correct installation of the filter directly affects its effectiveness, ease of use, and ease of later maintenance.
- Horizontal installation with the filter bowl facing downward – this position ensures optimal 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 bowl, the level of contamination of the filter screen can be easily determined, which facilitates maintenance and inspection.
- Install directly downstream of the water meter in accordance with DIN 1988, Part 2.
The filter must be installed in a horizontal position, with the bowl facing downward. It is advisable to leave convenient access to the ball valve, pressure gauge, and transparent cover to facilitate contamination monitoring and regular backwashing.
Operation and everyday use
The F76S-11/4AA model was designed for convenient operation. The transparent cover makes it easier to assess the contamination level of the filter screen on an ongoing basis, while the pressure gauge supports monitoring of operating parameters. A special setting ring helps determine the time for the next backwash, organizing routine service activities.
Backwashing allows the insert to be refreshed without interrupting the supply of filtered water to the installation. This is an important feature in more advanced systems where the water filter is the first stage of equipment protection. Such an element complements broader solutions used in domestic water preparation systems, including where an osmotic filter, reverse osmosis filter, reverse osmosis unit, or a complete reverse osmosis system is used later.
Additional important information
- Threaded connections
- KVS value: 22
Technical specifications
| Manufacturer | HONEYWELL |
|---|---|
| Model | F76S-11/4AA |
| Connection diameter | 11/4" |
| Backwashing | YES |
| Maximum operating pressure | 16 bar |
| Minimum operating pressure | 1.5 bar |
| Filtration accuracy | 100 microns |
| Operating temperature | 40°C |
| Filtration rate (capacity) | 16.5 m3/h |
| Dimensions (L/W/H) | 60 cm / 15.8 cm / 20 cm |
| Installation position | Horizontal |
| Medium | Water |
| Pressure gauge | YES |
Questions
What is the Honeywell F76S-11/4AA filter used for?
It is a fine mesh filter for water installations that removes mechanical impurities such as rust, sand, or hemp fibers. It protects fittings and installation devices against deposits present in the water.
Is water still available in the installation during backwashing?
Yes. One of the key advantages of this model is the continuous supply of filtered water even during the cleaning process of the filter screen.
What impurities does the F76S-11/4AA Honeywell backwashing water filter capture?
The filter captures foreign bodies and mechanical impurities, including rust particles, hemp fibers, and sand grains.
How can I tell that the filter needs backwashing?
A special setting ring indicating the date of the next backwash helps with this. In addition, the transparent bowl allows visual inspection of the contamination level of the insert, and the pressure gauge supports monitoring of operating parameters.
Can the filter be connected to an automatic backwashing unit?
Yes. The F76S-11/4AA model can work with an automatic backwashing unit, making operation easier in more demanding installations.
In what position should the filter be installed?
The filter should be installed horizontally, with the bowl facing downward. This position ensures optimal operating efficiency.
Where is the best place to install the F76S-11/4AA Honeywell backwashing filter in the installation?
Installation directly downstream of the water meter is recommended in accordance with DIN 1988, Part 2. It is also advisable to use shut-off valves on both sides of the water meter.
Is the filter suitable for domestic and industrial applications?
Yes. This model is used in both domestic and industrial installations wherever effective filtration of mechanical impurities is required.
What are the most important operating parameters of the filter?
The filter has an 11/4" connection, 100-micron filtration accuracy, maximum operating pressure of 16 bar, minimum operating pressure of 1.5 bar, operating temperature up to 40°C, and a capacity of 16.5 m3/h. It is also equipped with a pressure gauge and a backwashing system.
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