DWTBF Double bag filter housings with manual switch between the two


DWTBF Double bag filter housings are made of stainless steel and are equipped with a manual switch for parallel or single operation. This allows for a filter bag exchange without process interruption, ensuring a constant operation. Depending on the flow rate and medium, different types of connections can be delivered, e.g. flange, screwed pipe connection DIN 11851 or pipe thread. The versions with a central switch-over handle are equipped with 3-way-ball-valves. The versions with butterfly-valves are equipped with a central T-piece for in- and outlet.

Three different sizes with filter areas ranging from 2 x 0,1 m2, 2 x 0,25 m2 and 2 x 0,5 m2 are available. Special accessories such as discharge-ball-valves and vent valves, volume reducer and manometers can also be supplied. Additional optional instruments availablefor monitoring are different pressure gauges and pressure detectors.

Technical Data


Housing: stainless steel 1.4404/1.4571
Basket: stainless steel 1.4401
O-Ring: Viton (Viton-FEP-encapsulated, EPDM, Silicone, Buna)

Inlet / Outlet

Size, type and position according to customer specification


2 x G¼“ internal thread


R 1“ external thread ( except for version „SU“)

Filter bag

See table


Stainless steel 1.4571

Differential pressure

max. 3.5 bar


max. 10bar


max. 95 °C (sterilisation 150 °C)
With PP-Filter bags max. 70 °C, relating to bag material

Flow Rate

The maximum flow rate correlates to the nominal diameter of the housing connection and the characteristic curve of the flow rate of the chosen filter bag.

Features and Benefits

  • Double-bag filter housing with manual switch between the two
  • Parallel operation or individual operation possible
  • Bag filter housing made of stainless steel with hinged cover and swinging bolts
  • Three assembly sizes with 0,1 m2, 0,25 m2, 0,5 m2 filter area
  • Location, type and size of in- and outlet according to customer specification
  • Pressure basket made of stainless steel mesh
  • Spring-assisted press-on device made of stainless steel
  • Can be delivered with tripod or volume reducer


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