Installation
5.2
Below water line system layouts
Toilet with direct overboard
7
discharge
WATER LINE
1 in./ 25 mm
or 1.5 in./38 mm
SEACOCK
SEACOCK
Toilet with
8
holding tank
discharge
WATER LINE
1 in./ 25 mm
or 1.5 in./38 mm
SEACOCK
Add vented loop here
if holding tank is
below water line.*
*
Caution! Hazard of Flooding
All vented loops should be installed a minimum of 8 in./20 cm above water line at full heel.
0.75 in./
19 mm
VENT
FITTING
DISCHARGE
PUMP
VENT
FILTER
0.75 in./
19 mm
SEACOCK
1 in./25 mm or
1.5 in./38 mm ID
VENTED LOOP *
1 in./ 25 mm
or 1.5 in./38 mm ID
SANITATION HOSE
1 in./25 mm or
DECK
1.5 in./38 mm ID
DISCHARGE
VENTED LOOP *
HOLDING
TANK
(cut-away
view)
Dometic MasterFlush
0.75 in./ 19 mm ID
VENTED LOOP *
MACERATOR
TOILET
0.5 in./ 13 mm ID
FRESH WATER LINE
FROM
FRESH WATER SUPPLY
0.75 in./ 19 mm ID
SEA WATER LINE
1 in./25 mm or
1.5 in./38 mm ID
SANITATION HOSE
MACERATOR
TOILET
0.5 in./ 13 mm ID
FRESH WATER LINE
FROM
FRESH WATER SUPPLY
0.75 in./ 19 mm ID
SEA WATER LINE
0.75 in./ 19 mm ID
VENTED LOOP *
9