Schünemann SAB - Since 1937 - New Ideas - New Horizons

Automatic backflush filter F400/F440 (G)

Automatic backflush filter F400/F440 (G)

SAB’s fully automatic back flush filters F400 and F440 are one of our reliable automatic filters for continuous, uninterruptable and dependable operation. These filters are working by the principle of flow reversal by using a pressure loss between outlet and back flush line. These filters are able to operate on all fluids like water, lubricants, oils, as well all kind of fuels. The type series are distinguished within a welding design, F400 and F440 and a casted version F400G and F440G. Either F400 or F440 are working by the same back flush philosophy. The F440 is a supplement of the F400 with larger nominal diameter and therefore for higher flow rates. Against more aggressive fluids several coatings are available on request.

Standard Version F400/F440 (G)
Nominal size F400 (G): DN 25 to DN 80 1" to 3"
Nominal size F440 (G): DN 100 to DN 400 / 4" to 16"
Flow rate: 2,5m³/h to 1100 m³/h
Design pressure: 10 (16) bar
Design temperature: -20 °C bis +80 °C
Materials F400/F440: St.35,8, P 265 GH, 1.4541
Materials F400G/F440G: GG-25
Coatings: Vestosint, PTFE or similar
Cover closing: Bolts, stud bolts and nuts
Kind of working: Continuously, back flushing with medium against atmosphere
Strainer: Pleated or flat
Filter fineness: 20 µm up to several millimeter
Nozzles: Flanges according DIN, ANSI, JIS, BS
Connections electr.: 24 V 690 V; 50/60 HZ
Certification: PED 97/23 AD2000, ASME VIII div.1 U-Stamp, ASME X, GOST, Certifications as GL,ANV, BV TÜV, Lloyds, ABS