Installation Notes

Below are installation examples showing the versatility of Lavac system plumbing.

Download Install Manual & Specs for Lavac Manual Diaphragm Pump

Download Install Manual & Specs for Lavac Electric 12v/24v Diaphragm Pump

This diagram shows a simple method to use the Henderson Mk V
pump as an emergency bilge pump or sump pump.

The pump body may be rotated to accommodate various mounting angles.

ocean toilet

Installation # 1 - For craft permanently on waters where overboard discharge is prohibited. This is a basic system. Use of a dockside marina pump out station is used or a D.I.Y. outboard pump can also discharge the holding tank.

A-Toilet discharge flow
B-Pump-out flow to quay
C-Discharge to sea
1. Vent/breather pipe connect to 1 ½" ID hose
2. Microvent filter
3. Rinse out facility, connect to ¾" ID hose
4. Vented loop
5. Seacock

Installation #2 - For craft visiting waters where overboard discharge is prohibited. This system is simple to operate. Use of quay side marina pump out station is not restricted by the on board, in line, pump. Holding tank contents can be drawn through it.

A-Toilet discharge flow
B-Pump-out flow to quay
C-Discharge to sea
1. Vent/breather pipe connect to 1 ½" ID hose
2. Microvent filter.
3. Rinse out facility, connect to ¾" ID hose
4. Vented loop
5. Seacock

Installation #3 - For craft requiring toilet discharge to sea or holding tank and pump-out of holding tank using the one toilet pump.

A-Toilet discharge flow
B-Pump-out flow using Lavac Pump
C-Pump-out flow using Quay side pump.
D-Discharge to sea
1. Vent/breather pipe connect to 1 ½" ID hose
2. Microvent filter
3. Rinse out facility, connect to ¾" ID hose
4. Vented loop.
5. Seacock.

Installation #4 - An alternate to figure #3. This system provides a self pump-out facility to shore or sea, using the one toilet pumps. When being pumped out by quay side facility this arrangement avoids tanks contents being drawn through the pump and uses only one sewage pipe connection to the tank.

A-Toilet discharge flow
B-Pump-out flow using Lavac pump
C-Pump-out flow using quay side pump
D-Discharge to sea
1. Vent/breather pipe connect to 1 ½" ID hose
2. Microvent filter
3. Rinse out facility, connect to ¾" ID hose
4. Vented loop.
5. Seacock.