Product description
7
4.2
Function
The oil mist filter is mounted on the exhaust port of rotary vane pumps. It filters oil mist
particles from the conveyed gas flow and thus reduces the escape of operating fluid mist.
The filter elements are installed in a corrosion-resistant aluminum casing and consist of
a cylindrical filter made from glass/polyester fleece in the standard and helium-tight ver-
sions, or from sintered carbon in the corrosive gas version. A baffle is also fitted over the
filter insert. An integrated pressure relief valve opens when the filter elements are exces-
sively contaminated, so that the maximum operating pressure of 1500 hPa (absolute) is
not exceeded. The volume of filtered operating fluid can be viewed through a sight glass
and drained via a drain screw.
To return the filtered operating fluid from the OME into the pump without interrupting the
pump operation, an operating fluid return (optional) can be used.
Fig. 1:
Duo 35/65 with oil mist filter OME 40 MR
Operating fluid return
line (option)
If the operating fluid accumulated in the OME reaches a specified level, a float valve
opens and the operating fluid is channeled via intake pressure back into the rotary vane
pump´s intake side. To avoid impairing the function of the pump, any process-related
condensate in the oil sump, must be drained as necessary.
The use of the operating fluid return increases the operational safety of the pump and
reduces the maintenance requirements.
13
Sight glass
15
Filter element saturation
indicator
24
Interchangeable flange
55
Operating fluid drain
screw
100 Oil mist filter
110 Operating fluid return line
V
13
15
110
100
24
55