FR-550 restrictor (flow limiter) for reverse osmosis systems, mounted on the wastewater outlet. It enforces the proper water flow, which supports the flushing and cleaning of the osmotic membrane and helps to drain contaminants into the sewage system. Connection via quick couplings. When replacing the membrane, it is recommended to install a new restrictor.
FR-550 is a flow restrictor designed for use in reverse osmosis systems. The element is installed on the wastewater outlet, where it enforces the correct water flow in the reverse osmosis filter. This supports membrane flushing, helps remove accumulated contaminants to the sewer, and helps maintain the proper operation of the entire water filtration system. Quick-connect fittings make installation and replacement easier.

The FR-550 flow restrictor is used in reverse osmosis systems on the wastewater discharge line. It is a small but very important component that affects the operating conditions of the osmosis membrane and supports its ongoing cleaning during device operation.
In practice, the flow restrictor is responsible for forcing the proper water flow on the outlet side. This helps more effectively flush away contaminants accumulating on the membrane and carry them to the sewer. This matters both for filtration efficiency and for the service life of the membrane itself in the RO system.
In systems with an osmosis membrane, properly controlled wastewater discharge has a direct impact on the correct operation of the unit. The FR-550 is not just an installation accessory, but a component that helps maintain the proper operating conditions.
The FR-550 is connected using quick-connect fittings, which makes it easy to install in the system and later replace. The restrictor is mounted on the line carrying dirty water to the sewer, i.e. on the wastewater outlet in the reverse osmosis system.
When replacing the osmosis membrane with a new one, a new flow restrictor must also be installed. It should be fitted in place of the old, worn restrictor — on the line carrying dirty water to the sewer.
Regular replacement of the restrictor helps maintain proper membrane performance. In the case of heavily contaminated water, especially water containing a lot of calcium and iron, the restrictor should be replaced every few years. Such operation supports the correct functioning of the water treatment system and reduces the risk of deteriorated membrane operating conditions.
Replacement of the flow restrictor is recommended as part of proper reverse osmosis system maintenance. It is especially worth remembering when:
| Model | FR-550 |
|---|---|
| Product type | Flow restrictor / restrictor |
| Intended use | Reverse osmosis systems |
| Installation location | Wastewater outlet / line carrying dirty water to the sewer |
| Connection type | Quick-connect fittings |
| Function | Forces the proper water flow, supports flushing and cleaning of the osmosis membrane, and discharge of contaminants to the sewer |
The FR-550 is used to limit and control the water flow at the wastewater outlet in a reverse osmosis system. This supports flushing of the osmosis membrane and helps discharge contaminants to the sewer.
The component is installed on the line carrying dirty water to the sewer, i.e. on the wastewater outlet in the RO system.
Yes, the FR-550 restrictor is intended specifically for use in reverse osmosis systems as a component working with the osmosis membrane.
A properly functioning restrictor forces the correct water flow, which supports membrane cleaning. This makes it easier to flush away contaminants and helps maintain proper membrane operating conditions for longer.
Yes, when replacing the osmosis membrane with a new one, a new flow restrictor should also be installed. It is fitted in place of the old, worn component.
In the case of heavily contaminated water, especially with a high amount of calcium and iron, the restrictor should be replaced every few years. Regular replacement helps maintain proper membrane operation.
The product is connected using quick-connect fittings, which simplifies installation and servicing in the water filtration system.
Yes, the FR-550 supports the osmosis membrane flushing process. The forced water flow helps flush away accumulated contaminants and direct them to the sewer.
FR-550 restrictor (flow limiter) for reverse osmosis systems, mounted on the wastewater outlet. It enforces the proper water flow, which supports the flushing and cleaning of the osmotic membrane and helps to drain contaminants into the sewage system. Connection via quick couplings. When replacing the membrane, it is recommended to install a new restrictor.