The self-cleaning Automatic Filter F451 is pneumatically operated and used for the separation of solids in various different media like seawater, river water or process water. The Filter ensures reliable and continuous filtration in a variety of applications like cooling water cycles or water treatment plants. The filter can operate at very low pressures of only ≥ 0,7 bar and is characterized by an unmatched low pressure loss, a compact design and near maintenance-free operation. Due to the standardized design and the use of cast housings the F451 sets a new benchmark when it comes to technical and economic efficiency.
Setting a new benchmark
Reliable filtration by using the Bernoulli principle
| In- / outlet | DN50 – DN300 (DIN, ANSI) |
| Housing Material | Cast iron Stainless steel Super austenitic stainless steel |
| Design pressure | 10 bar |
| Volume flow | 3,5 to 1300 m3/h |
| Strainer insert | Slot wedge wire strainer Basket strainer |
| Grade of filtration | ≥ 100 µm (slot wedge wire) ≥ 1 mm (basket) |
| Design code and guidelines | AD2000/ EN13445 ASME VIII Div.1 PED/ EAC |
Optimized design
The new F451 automatic filter series utilizes standardized cast housings and impresses with a significantly more compact design. Although the F451 is standardized, it can be easily adapted to specific application requirements. The F451 covers a broad range of materials like austenitic stainless steel (1.4581 / 316SS / SA-351), super austenitic stainless steel (1.4557 / SA-351) and ductile cast iron (GGG-40). All F451 filters can be designed according to PED, EN13445 or ASME VIII Div.1.
Grade of filtration
The F451 ensures the safe protection of our customer’s applications with a consistently high filtration quality down to 100 μm. The proven Bernoulli technology warrants continuous and effective filtration even at low operating pressures starting from only 0.7 bar.
Delivery time
Due to the streamlined and standardized design all sizes and materials are available from stock within short delivery times.
Filtration cycle (Bernoulli prinziple)
Bernoulli‘s principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in static pressure. Georg Schünemann has perfected the utilization of the Bernoulli principle for automatic filters over decades. The distinguishing feature of this filter is the flushing disc, which enables an efficient and contactless cleaning. The cleaning process is completely automatic and requires no manual intervention.
FILTRATION
- During normal filtration, particles accumulate from top to bottom on the inside of the strainer.
- Cleaning begins automatically according to a timed cycle, or after a high differential pressure signal.
PRE-FLUSHING
- During the pre-flushing phase, the flushing valve opens and particularly larger particles are flushed out.
CLEANING
- The flow velocity increases locally around the disc within the gap between the flushing disc and the strainer. Simultaneously the static pressure is reduced in accordance with the Bernoulli Principle and the direction of the flow is reversed which releases the particles from the surface of the strainer basket.
- The released particles are flushed out from the filter via the flushing outlet. Finally, the flushing valve is closed.
- The filtration will not be interrupted during the entire cleaning cycle.
F451
Do you have any further questions?
Our team is always available to answer your questions quickly and easily.
Dörthe Nowak
+49 421-55909-75
nowak@sab-bremen.de
Jan Dora
+49 421-55909-53
dora@sab-bremen.de
Nina Neumann
+49 421-55909-32
neumann@sab-bremen.de
