Return simplex filters are positioned at the end of a return line to remove contaminants from the operating fluid before the fluid returns to the tank.
Strong, durable and die-cast aluminum housings, with Buna-N seals construction is perfect for return-line filtering, as line filters or as tank attachment filters on the tank or tank integrated filters in the tank.
- Flow rates up to 15000 l/min
- Working pressure up to 32 Mpa
- Operating temperatures: -29°C to 121°C
- Aluminum casting and Buna-N Seals
- Wide range of indicator options
- Various bowl length versions possible
- More Details
- Technical Data
- Overall Size
These industrial simplex strainers are economical, space-saving units offering a variety of options, such as steel or plastic access covers, high-pressure option, numerous connections and accessories including bypass-valve, clogging indicators.
It is widely used in machinery, mobile and heavy-duty applications.
Model | Flow Rate (L/min) | Filtration (μm) | Pressure (Mpa) | Diameter (mm) | Pressure loss (Mpa) | Connect | Element Number | |
Low Pressure | RFA-25 | 25 | 1,3,5,10,20,30 | 1.6 | Ø 15 | Initial:≤0.075 Max:0.35 | Thread | 1 |
RFA-40 | 40 | Ø 20 | ||||||
RFA-63 | 63 | Ø25 | ||||||
RFA-100 | 100 | Ø 32 | ||||||
RFA-160 | 160 | Ø 40 | ||||||
RFA-250 | 250 | Ø 50 | Flange | |||||
RFA-400 | 400 | Ø 65 | ||||||
RFA-630 | 630 | Ø 90 | ||||||
RFA-800 | 800 | Ø 90 | ||||||
RFA-1000 | 1000 | Ø 90 | ||||||
Large Flow | LFN-1300 | 1300 | 3~200 | 1.6 | Ø100 | Initial:≤0.1 Max:0.35 | Flange | 1 |
LFN-2600 | 2600 | Ø150 | 2 | |||||
LFN-3900 | 3900 | Ø200 | 3 | |||||
LFN-6500 | 6500 | Ø250 | 5 | |||||
LFN-7800 | 7800 | Ø250 | 6 | |||||
LFN-9100 | 9100 | Ø250 | 7 | |||||
LFN-15000 | 15000 | Ø300 | 10 |
Return Filters

Screw-in filter cover
Lightweight and easy-operation, filter element can be easily taken out of the filter head.
Indicator Port
Used for install indicator, indicating when to change filter elements
Rotary-pressing filter bowl
Die-cast aluminum filter bowl ensure strength and durability.
Outlet
Must be below the oil level.
Inlet
Inlet port options include thread port or SAE 4-bolt flange to allow easy installation
Bypass valve
When the pressure reaches to 0.35Mpa, bypass valve will open automatically to keep hydraulic system safe
Filter Head
High-quality aluminum material, variety customizable colors options.
Fluid diffuser
At bottom of the filter, help the medium flow stably to tank and avoid the air reentering.
Connect flange with tank
Easy installation, both horizontal and vertical installation to tank are all right.