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RF400AR-E Strainer with Backwash Pump

From £2,990.00 GBP

The RF400AR-E Stainers with backwash pump are self-cleaning intake filters for attachment to the suction hose of surface mounted pumps.  These filters can be fitted with nylon or stainless steel mesh and are the same as the RF400AR strainers but with one difference.

The filters have a separate motor to drive their internal self-cleaning backwash, so that the cleaning mechanism is driven independently of the surface mounted pump - they have their own integral backwash pump to keep the filter mesh clear.

This allows you to vary the output of your pump without affecting the performance of the backwash in the filter – useful if you have a variable speed drive on your pump.

These filters and strainers will deliver up to 1000 litres / minute of filtered output from 50 microns to 6mm.

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RF400AR-E Self-cleaning Strainer with Backwash Pump

Key Features

  • Nylon or stainless steel filter mesh
  • Filter sizes from 50 microns to 6mm
  • High reliability and easy to install and use
  • Works with most centrifugal and progressive cavity pumps
  • Continuous backwash keeps filter mesh clear
  • Ideal for variable speed pumps
  • 60 cubic metres per hour maximum flow
  • Reduced capital, installation and maintenance costs
  • All Stainless Steel construction

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

RF400AR-E rendered 6mm screen

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 Self-cleaning Strainer with Backwash Pump dimension drawing 1
RF400AR-E Self-cleaning Strainer with Backwash Pump dimension drawing 2
RF400AR-E Self-cleaning Strainer with Backwash Pump dimension drawing 3

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 Self-cleaning Strainer Backwash Pump detailsRF400AR-E Self-cleaning Strainer Backwash Pump

RF400AR-E Self-cleaning Strainer with Backwash Pump 6mm perforated steel mesh

 

RF400AR-E Strainer Construction

RF400AR-E Self-cleaning Strainer with Backwash Pump fitted with woven steel mesh

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 RF400 filters

 

 

Please Note: Our filters are designed for use in dirty water or liquids with a viscosity close to that of water. Our filters and filterpumps are NOT suitable for use in raw sewage or any other dirty water which contains oils or fat.

 

Ordering

Rotorflush RF400AR-E Self-cleaning Strainer with integral backwash pump – up to 1000 litres per minuteRF400AR-E Self-cleaning Strainer with Backwash Pump fitted with 3mm perforated mesh

 

Rotorflush Filter Model No Price £ (GBP – exc. VAT)
RF400A-E nylon filter mesh £3,110.00 (GBP)
RF400AR-E sintered stainless steel mesh £3,375.00 (GBP)
RF400AR-E woven stainless steel mesh £3,110.00 (GBP)
RF400R-E perforated stainless steel mesh £2,990.00 (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.  Contact us for latest lead times.

Carriage and packing charges are extra.

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