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Elfi Filtration

Brush self cleaning filter SP L & SP O

Brush self cleaning filter SP L & SP O

BRUSH SELF CLEANING FILTER COARSE FILTRATION (MEDIUM BIG FLOW RATE)
MAIN TECHNICAL FEATURES:
  • Filtration degree from 2000 to 80 μm on polyester mesh/ AISI316
  • Maximum flow rate 1000 m3/h with a single filter
  • Minimum amount discharge water
APPLICATIONS:
  • Pre-filtration in UF systems
  • Cooling towers
  • Spray nozzle protection
  • Heat exchangers
  • Seawater
  • Irrigation

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Description

HOW IT WORKS

Water enters the filter through the inlet (IN), it goes through the filtering cylinder (1) from inside out, which retains the suspended filters to be filtered; it retains all suspended solids with size larger or equal to the filtration degree installed. Filtered water leaves through the master valve (OUT).

REGENERATION

The continuous settling of suspended solids obstructs the passage of water which results in a pressure difference (∆P). At a preset value of ∆P (range 0.3 ÷ 1 Bar) an automatic cycle will start to clean the filter cylinder (1). This operation starts with a signal that closes the outlet valve, (2) which clears the ∆P, and opens the discharge valve (3). At the same time the electric motor (4) rotates the brushes (5) in the filtering cylinder to clear away the contaminant that is ejected through the discharge valve (3). The cleaning cycle lasts approximately 20 seconds.

CONTROL

A switchboard controls the washing phases. The signal that starts the cleaning cycle is given by a differential pressure switch or by time. The switchboard gives an “alarm” signal in case of problems in the washing system. These signals can be sent to a pre-existing control centre. The washing phase can also be controlled manually. The solenoid controlling the valve is pneumatic.

FILTER ELEMENT SECTION AND CLEANING SYSTEM

TECHNICAL DATA AND DIMENSIONS | SP L

MODELSP L 10SP L 15SP L 30SP L 45SP L 60SP L 75SP L 90SP L 130
Filtering area (cm²)100015003000450060007500900013000
Connections- In/Out2"3"DN100DN150DN200DN250DN300DN350
Discharge connection1" F1" F1 1/2" F1 1/2" F1 1/2" F1 1/2" F1 1/2" F2" F
Draining connections1/2" F1/2" F1/2" F1/2" F1/2" F1 1/2" F1" F1" F
Extra flow rate required during washing at 1 Bar with mesh from 800 to 80 micron – m³/h234799915
Wash duration - Sec2020202020202020
Min-max pressure – Bar0,5-100,5-100,5-100,5-100,5-100,5-100,5-100,5-10
Max Temperature - °C5050505050505050
Power supply – Volt400 50/60 Hz400 50/60 Hz400 50/60 Hz400 50/60 Hz400 50/60 Hz400 50/60 Hz400 50/60 Hz400 50/60 Hz
Power required – Watt90180180180370370370550
Solenoid valve – Volt /Watt24 AC /624 AC /624 AC /624 AC /624 AC /624 AC /624 AC /624 AC /6
Pneumatic supply - Bar2 - 82 - 82 - 82 - 82 - 82 - 82 - 82 - 8
Construction certificatesCECECECECECECECE
Maximum size of inlet
particles – mm		1010101010101010
Max total suspendedsolids at inlet 125 micron – mg/l3030303030303030
A (mm)757903107113091755202725813181
B (mm)4855056457458009059681114
C (mm)327423423516714852852852
D (mm) Cartridge extraction4506006408851130116011601690
WEIGHT when empty Kg3451627285127223305
WEIGHT in operation Kg425181116143214356618

TECHNICAL DATA AND DIMENSIONS | SP O

MODELSP O 10SP O 15SP O 30SP O 45SP O 60SP O 75SP O 90SP O 130
Filtering area (cm²)100015003000450060007500900013000
Connections- In/Out2"3"DN100DN150DN200DN250DN300DN350
Discharge connection1"1/2F1"1/2F2"F2"F2"F2"F2"F2"F
Washing flow rate - m³/h510152024243545
Wash duration - Sec.1515151515151515
Min-max pressure - Bar0,5-100,5-100,5-100,5-100,5-100,5-100,5-100,5-10
Max Temperature - °C5050505050505050
Power supply - Volt400 50/60 Hz400 50/60 Hz400 50/60 Hz400 50/60 Hz400 50/60 Hz400 50/60 Hz400 50/60 Hz400 50/60 Hz
Power required - Watt90180180180370370370550
Solenoid valve - Volt / Watt24 AC / 624 AC / 624 AC / 624 AC / 624 AC / 624 AC / 624 AC / 624 AC / 6
Pneumatic supply - Bar2 - 82 - 82 - 82 - 82 - 82 - 82 - 82 - 8
Construction certificatesCECECECECECECECE
Maximum size of inlet particles – mm3030303030303030
Max total suspended solids at inlet – 125 micron mg/l3030303030303030
A (mm)9401185143016751920205522002700
B (mm)4705855905956256858851195
C (mm)33042042048562579510401195
D (mm) * Cartridge extractiona25040058564081085010401230
WEIGHT when empty Kg2529465282125200288
WEIGHT in operation Kg33427291116222370628

FILTERING MESH FLOW RATE TABLE FOR SP FILTERS (m3/h)

MODEL 800 µm PES AISI316 500 µm PES AISI316 300 µm PES AISI316 200 µm PES AISI316 125 µm PES AISI316 80 µm PES AISI316
SP 10 30 30 30 30 30 30
SP 15 80 80 80 80 80 80
SP 30 147 147 147 147 147 111
SP 45 216 216 216 216 216 166
SP 60 315 315 315 315 315 222
SP 75 573 573 573 573 395 277
SP 90 720 720 720 720 473 333
SP 130 1038 1038 1038 1038 682 373

The flow rates indicated refer to a load loss of 0.2 Bar with clean, filtered water.

PARTS DESCRIPTION

PART DESCRIPTION
Body AISI316 – SAF2205 – SAF2507
Cover AISI316 – SAF2205 – SAF2507
Connection threading BSP
Connection threading EN 1092-1 PN10
Mesh support strainer PVC – AISI316
Filtering mesh Polyester – AISI316: 500, 300, 200, 125, 80, 50, 25 µm
Brushes PVDF
Brush support PVC – AISI316
Internal seals NBR – EPDM
Reduction unit Aluminium and carbon steel
Electric motor Hot-painted aluminium
Solenoid valve Five-way aluminium
Switchboard ABS IP65 with front display
Differential pressure switch Aluminium with parts in contact with liquid made of AISI 316
Discharge valve PP diaphragm with flow rate regulation
Outlet valves Butterfly with AISI316 disc and double-acting pneumatic actuator
Pressure gauges Stainless steel with 2″1/2 dial, radial connection and 0-10 Bar indication
Accessories (Plugs and adapters) PP – PVC – AISI316

SUGGESTED INTALLATION

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