Sitting and Installing your Marine Toilet

Sitting Below the Waterline: 

The toilet is supplied as standard with a heavy lower valve (29A or VE29A) which is suitable for installations mounted up to 510mm (20") below the waterline. There is an option for an extra heavy lower valve (29B or VE29B) which allows the installation to be mounted up to 1220mm (48") below the waterline. Please note that it is vital to ensure that the wheel control valve is turned off after use.

Sitting Above the Waterline: 

Blakes toilets have been sited in installations well above the waterline. It is strongly recommended however that installation above 1.9m (6") have a one-way valve located in the inlet pipe just below the flushing pump (no loop is required in the inlet pipe) so that the pump maintains its prime.  

General: 

The base of the syphon pipe (1A or 1MA or V1A) should be mounted on a hardwood platform approximately 32mm (1 1/4") thick. A Template should be used for drilling the holes necessary in the platform.

Securing bolts 10mm (3/8") should be passed from the platform to pick up the four holes in the base, capped with dome nuts and tightened securely (dome nuts are available as accessories).

For safety reasons, the discharge pipe should be taken up vertically high enough to always be above the water line, making sure that you allow for the waterline to rise with heeling. Then through a smooth bend down to the discharge seacock. This loop enables the toilet to work better by exerting a slight back pressure on the valves. 

It is not necessary for the inlet pipe to be connected to the inlet seacock with a similar loop if the safety control valve (11 or VE11) is always turned off after each use of the flushing pump. 

Installations Incorporating a Holding Tank: 

The Blake toilets are perfectly suitable for use with holding tanks. It is necessary however, to ensure that the loop of the discharge hose is taken in a loop above the top of the holding tank to prevent syphoning back of the contents of the holding tank (ensure that the loop still allows for the boat heeling) 

Installations with a Washbasin (Syphon pipe 1 or V1 ): 

Unless a separate seacock is used, the basin can be pumped out through the toilet by means of a connection in the syphon pipe. Note that this is a special option and must be specified. Washbasins should only be connected to the toilet fitted on the same side of the vessel as the toilet.