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1
VACUUM TOILET
OPERATION AND MAINTENANCE
Date:
Doc.
09 Nov 2010 002033-4
6543002 DISCHARGE VALVE, EVAC 910, WALL MODELS, FLOOR MODELS AND
STAINLESS STEEL MODELS
Operation
Closed condition:
The control mechanism shuts off connection between the vacuum piping and the discharge valve housing. As the
valve housing is under atmospheric pressure the spring-loaded closing mechanism closes the rubber diaphragm
and isolates the bowl from the vacuum piping.
Open condition:
As the control valve opens the discharge valve housing is subjected to vacuum, thus forcing the closing mechanism
to open. This in turn allows the rubber diaphragm to open, and connects the bowl to the vacuum pipe line.
Closing sequence:
The vacuum pulse enters to the relief valve. The relief valve opens the port between athmospheric air and the
discharge valve. Athmospheric air enters to the discharge valve witch closes immediatelly. After a short delay the
atmospheric air pulse reaches to the water valve and the relief valve. The water valve closes and lets the certain
level of water at the bottom in the bowl.
Maintenance
See document 002034-6 for scheduled maintenance.
CLOSED
CONDITION
Closing
mechanism
Control mechanism
Bowl
side
Vacuum
piping
Vacuum hose
Connection
pipe
OPEN CONDITION
CLOSING SEQUENCE
Rubber diaphragm
Rubber
sleeve
Rubber
sleeve
Relief valve
Discharge
valve
Discharge valve
Atmospheric air
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