The AF series  Automatic Bernoulli  Filter is designed for continuous filtration of water in pressurized systems. AF Bernoulli Filter removes debris and particles from natural water sources such as sea water or river water. The AF filter works in BERNOULLI principle, which leads to the simple and highly reliable filtering operation.

BERNOULLI CLEANING PRINCIPLE

The filter element of AF Bernoulli filter is cleaned by the cleaning disc mounted on the pneumatic cylinder rod. When the cleaning action triggered, the disc moves into the filter element and water passes through the gap between the disc and the filter element. Flow velocity increases around the disc and the static pressure around the disc decreases because of the Bernoulli principle. Around the disc edge, the vacuum effect of lower static pressure makes the filtered water back-flush the filter element surface.

TECHNICAL FEATURES AND ADVANTAGES

■ Simple and reliable structure with only two moving parts (Clean disc and discharging valve)
■ Non-contact cleaning, no particle extrusion out of the filter element, efficient filtration
■ Low and consistant pressure drop (even <0.011MPa) both when clean and dirty
■ Very low working pressure requirement down to 0.03MPa
■ Wide flow rate range from 30 to 7000 m3/ h in only one filter unit
■ No filtration interruption when self-cleaning
■ Filtration sizes from 0.1 to 2 mm
■ Easy installation in horizontal or vertical position 

TYPICAL APPLICATION FIELDS

■ Typical applications: water treatment, circulating cooling system, heat exchanger protection,
spraying nozzle protection, ballast water treatment system
■ Applicable liquids: underground water, sea water, lake water, river water, circulating cooling
water,sewage water, process water, cleaning water

FILTER ELEMENT

AF Bernoulli filter has two types of filter elements as the screen
[V-SLOT] 100μm~2000μm, slotted and smooth surface, easy to clean, rarely clogged, uniform slots, world-class precision, heavy duty, long service life.
[POR] 1000μm~2000μm, micropore surface, smooth internal surface, good roundess.