Non-Return Valve & Drain Venting - Miele W1903 User Manual

W1900 Series Clothes Washers
Technical Information
4.12 Non-Return Valve & Drain Venting
Refer to Figure 4-5 – Non-Return Valve.
During the drain segment of a program the Ball-Seat Valve, (item 1)
closes preventing dirty water from re-entering the Suds Container. Should
the drain connection on site be lower than the water level (within the
appliance) the valve opens to prevent any siphoning of water from the
appliance.
Figure 4-5: Non-Return valve
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