RF400AR-E Self-cleaning Strainer with Backwash Pump
Description
RF400AR-E Self-cleaning Strainer with Backwash Pump
The Rotorflush RF400AR-E self-cleaning strainer with backwash pump provides suction intake protection for surface mounted pumps and other connected equipment. These are our successful RF400AR filters built with an internal self-cleaning backwash pump to keep the filter mesh free from debris even if the output of your surface mounted pump varies.
These are stainless steel dirty water suction intake filters with a capacity of up to 1000 litres / minute (60 m3 per hour), capable of filtering from 60 microns to 6mm.
RF400AR-E filters are powered by a small submersible pump to drive their internal self-cleaning backwash, so that the cleaning mechanism is driven independently of your surface mounted pump. They can be used where the pump output is variable without compromising the filter’s backwash. The motor continuously backwashes the mesh screen blowing away anything that might cause it to block, whether your pump is pumping a low or high volume of water.
The RF400AR-E strainer with backwash pump offers both fine and coarse self-cleaning filtration. It is available with replaceable nylon mesh inserts or stainless steel top mesh for fine filtration (up to 315 microns); on average nylon mesh inserts need replacing every 5000 hours continuous use for 300 micron mesh, and every 1000 – 2000 hours continuous use for 60 and 115 micron mesh. These maintenance intervals will of course vary according to water conditions.
The RF400AR-E can also be fitted with fine stainless steel filter mesh, and needs jet washing at similar intervals. For coarse filtration and compliance with EU Eel and Elver regulations, 1, 2, 3 or 6mm stainless steel filter meshes are available.
The twin jets of the cleaning rotor rotate at about 60 rpm in each filter, clearing the whole screen every ½ second. As the cleaning mechanism is on the filtered side of the filter mesh debris in the water will not obstruct the mechanism, or affect the backwash pump.
For a larger capacities our RF600AR self-cleaning filters deliver up to 4,500 litres per minute, and we can custom build larger self-cleaning filters to your specifications. For smaller capacities see our RF200 ranges of filters.
Models & Specification
RF400AR-E Self-cleaning Strainer with Backwash Pump
| General Characteristics | RF400AR-E Self-cleaning Strainer with Backwash Pump |
| Water supply to cleaning rotor | Supplied by built-in pump motor |
| Maximum pump output (m3 /hour) (1) | 60 |
| Standard coarse screen apertures | 3mm or 6mm perforated 304 stainless steel 1mm or 2mm woven 316 stainless steel mesh |
| Standard fine screen | 50, 100 or 315 micron sintered stainless steel top mesh 60, 115 or 300 micron bias cut nylon mesh |
| Dimensions (diameter x height) (mm) | 675 x 835 |
| Weight (kg) | 30 |
| Suction pipe connection | 3″ |
| Return pipe connection | 1.5 “ |
RF400AR-E Dimensions
RF400AR-E Backwash Pump Specifications
| No. | Name | Material | | Ref. | Name | Material |
| 1 | Pump body | AISI 304 | | 34 | Nut | AISI 303 |
| 6 | Shaft with rotor | AISI 303 | | 46 | Lower bearing supp. | AISI 304 |
| 7 | Impeller | AISI 304 | | 52 | Capacitor box | PA66 REINFORCED WITH FIBREGLASS |
| 11 | Mechanical seal | Ceramic/Carbon/NBR | | 54 | Cable | – |
| 12 | Motor case | – | | 55 | Float | AISI 304 |
| 13 | Cover | AISI 304 | | 58 | Cable stay | AISI 303 |
| 16 | Box | — | | 75 | Washer | NBR |
| 19 | Lower bearing | | | 77 | O-Ring | AISI 304 |
| 20 | Upper bearing | | | 91 | Washer | NBR |
| 21 | Adjusting ring | AISI 304 | | 96 | O-Ring | NBR |
| 23 | Capacitor | – | | 97 | Cable gland | NBR |
| 26 | O-Ring | NBR | | 98 | Cable gland | AISI 304 |
| 27 | O-Ring | NBR | | 106 | Spacer | AISI 304 |
| 28 | O-Ring | NBR | | 107 | Fixing flanges | NBR |
| 29 | Washer | AISI 304 | | 108 | Gasket | AISI 304 |
| 30 | Spacer for mechanical seal | BRASS | | 109 | Suction side lid | AISI 304 |
| 32 | Key | AISI 304 | | 208 | Screw | |
MODEL | Motor output (P2) | Power Motor (P1) | VOLT | In (A) | μF |
HP | kW | HP | kW |
RF400R-E | 0.50 | 0.37 | 0.70 | 0.50 | 220 – 240 | 2.5 | 8 |
RF400AR-E Strainer Construction
| Component | Material |
| Filter cage and lid | 304 Stainless Steel |
| Central turbine | 304 Stainless Steel |
| Jets | Food grade natural rubber |
| Bearings | Acetal copolymer |
| Standard coarse screen | 3mm or 6mm perforated 304 stainless steel 1mm or 2mm woven 316 stainless steel mesh |
| Standard fine screen | 50, 100 or 315 micron sintered stainless steel top mesh 60, 115 or 300 micron bias cut nylon mesh |
Note: 316 marine grade stainless steel is an option for all RF200 filters
Ordering
Rotorflush RF400AR-E Self-cleaning Strainer with integral backwash pump – up to 1000 litres per minute
| Rotorflush Filter Model No | Price £ (GBP – exc. VAT) |
| RF400A-E nylon filter mesh | £3,110.00 (GBP) |
| RF400AR-E sintered stainless steel mesh | £3,980.00 (GBP) |
| RF400AR-E woven stainless steel mesh | £2,990.00 (GBP) |
| RF400R-E perforated stainless steel mesh | £3.380.00 (GBP) |
Please state filter mesh size:
RF400A-E nylon mesh: 60, 115 or 300 micron bias cut nylon mesh is available
RF400AR-E sintered stainless steel mesh: 50, 100 and 315 microns sintered top mesh
RF400AR-E woven stainless steel mesh: 1mm or 2mm
RF400R-E perforated stainless steel mesh: 3mm or 6mm
Standard fittings are 3 inch BSP outlet, and 1½ inch BSP inlet to the backwash.
If NPT connections are required please state when ordering and we can fit adaptors.
Please note:
Delivery is by carrier and is usually between 5 and 7 days from order depending on product and availability.
Carriage and packing charges are extra.
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We’re here to help. Call us on +44(0) 1297 560229
Downloads
Below is the technical and maintenance information for the RF400AR-E Strainer with Backwash Pump
