0
50
100
150
200
250
300
1
2
3
4
5
6
7
Discharge head in mtrs
C
a
pacity in ltrs/min
2 Water
connections
2.0
Connections discharge side
The toilet is supplied both with a short rubber pipe of 40/50 x 140 mm and a rubber non-return
valve of 40/50 x 135 mm. One of them is to be fitted in the discharge line. With installations above
the water line and discharge directly overboard, there is no need for the non-return valve to be
fitted. With all other applications as shown on page 6, it is advised to fit the non-return valve in the
discharge line.
2.1
Pump capacity in relation with discharge head
The graph shows the relation between the pump
capacity and the discharge head; the pump
capacity is reduced when the discharge head
goes up. The diameters of the discharge lines are
not to be reduced! The diameter of the pump
discharge connection (38 mm) is to be used
throughout the complete discharge piping
system. Reduction of the diameter will reduce
the pump capacity.
2.2
Connections of water supply
The toilet needs to be connected to a pressurised water system for flushing. The actual pressure in
the water supply line will effect the quantity of water used during a complete program. With a
higher water pressure, more water will be used when flushing the toilet; with a lower water
pressure, less water will be used. With insufficient water pressure, optimum performance of the
toilet cannot be guaranteed. The required water pressure before the solenoid is to be no less than
1 bar and no more than 2 bar.
As a standard, the toilet has a built-in solenoid in the water supply line. The connections of the
valve housing of this solenoid are ½” B.S.P. To ensure sufficient supply of water, the inside diameter
of the water supply line is to be no less than 12 mm (½”).
When seawater is used to flush the toilet, an inlet filter is to be fitted in the suction line of the
seawater pump, to prevent debris to enter the system and the solenoid valve and obstruct the
valve when closing. When a separate pump is used (electrically connected to the power supply of
the solenoid valve) instead of a pressurised system, a foot valve is to be fitted in the discharge side,
directly after the pump. This valve will keep the water supply line to the toilet full, resulting in
immediate water supply to the toilet after the program is started. Not fitting this foot valve may
result in a delay between the starting of the program and the start of the actual water supply to the
toilet. This will result in insufficient water supplied to the toilet and a satisfactory performance
cannot be guaranteed.
Users manual Exalto toilet Page 3
