737 Flight Crew Operations Manual
Airplane General, Emergency
Equipment, Doors, Windows -
Controls and Indicators
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
D6-27370-866-EGP 1.30.21
3 Fill Fitting
Used to fill tank.
4 Fill and Overflow Valve Handle
Open - enables filling or gravity draining water tank.
Closed - normal position.
5 Tank Drain Valve Handle
Open - drains water from tank.
Closed - normal position.
6 Access Panel
Cannot be closed unless the Fill and Overflow Valve and Tank Drain Valve
Handles are in the closed position.
Lavatory Controls
SELECTOR VALVE
FAUCET ONLY
O
F
TOILET ONLY
SUPPLY ON
CLOSED OPEN
DO NOT OPEN DURING FLIGHT
DRAIN VALVE OPERATION
PLACARD
4
5
September 15, 2016
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