RF400AR-E 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 6 mm.

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 requires jet washing at similar intervals.  For coarse filtration and compliance with EU Eel and Elver regulations, 1, 2, 3 or 6 mm stainless-steel filter meshes are available.

When these filters are fitted with 2 mm woven stainless-steel mesh, the maximum flow rate that will comply with current regulations for Eel protection – at an intake velocity of 0.1 metres a second – is 540 litres a minute.  The maximum flow rate for EPA Rule 316 (b) intake velocities of 0.5 ft per second is 810 litres a minute (210 US GPM).

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 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 Dimensions

RF400AR-E Backwash Pump Specifications

RF400AR-E Strainer Construction

Note: 316 marine grade stainless steel is an option for all RF400 filters

Ordering

Rotorflush RF400AR-E Self-cleaning Strainer with integral backwash pump – up to 1000 litres per minute

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.