SOG II System Kits for Motorhomes / Caravans Type G C500

Item No: 25310

Our Price: £164.00

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SOG II System Kits for Motorhomes / Caravans Type G

Note: This SOG Kit is for the Thetford C500 toilet cassette.

2 Year Warranty.

SOG Installation Video (Note the Video shows a Type B Install but is similar)



How the SOG System Works


The SOG ventilator is switched on as soon as the blade valve starts to open and is switched off again when the blade valve is closed. The fact that no smells can leave the waste holding tank is brought about by - as soon as the ventilator is switched on there is a suction effect in the waste holding tank which draws in fresh air through the blade valve. This down-flow acts as a seal and prevents the gases and smells from rising. The fresh air that is drawn in removes the new odours in the toilet bowl when it is being used.

The decomposition process for sewage and toilet paper is accelerated by the increased flow of oxygen so that no additional chemicals are required. Ordinary toilet paper, not special for chemical toilets, should be used so that this is decomposed completely.

The exhaust ventilator with its motor has been specially developed for sanitary systems. The power consumption, 0.43 watt, is very low.

Motorhome SOG System Kits


 The SOG Motorhome Toilet Ventilation System is the ecological solution for motorhome and caravan toilets.

Advantages over standard chemical toilets:-

    • It is 100% chemical free.
    • Low running costs as ordinary toilet paper can be used and no chemicals needed.
    • Low power consumption
    • Flexibility when wild camping etc as no requirement to use a chemical WC Toilet emptying point and normal toilets can be used for emptying due to the lack of chemicals. You can also empty whenever the chance arises safe in the knowledge that a fresh batch of chemicals isnt going to be wasted.
    • Unwanted aromas no longer present inside motorhome even when SOG System is in use.
    • Emptying process easier as the contents of the cassette are decomposed more than without SOG.

There are four kits for cassette type toilets and one kit for permanently installed tanks. These SOG Toilet kits have been constructed using traditional German engineering and know-how.

All Thetford waste holding tanks can be modified for the SOG toilet ventilation system.

The equipment makes the use of chemicals superfluous : optimal decomposition is guaranteed and unpleasant odours are removed including during use.

Sog Kits for Motorhomes Q&As


Q1. What are the dimensions of the Filter Housing (The plate that covers the filter on the outside of the cassette compartment door)


A1. The filter housing is 7" High X 5 1/4" Wide, It can be fitted either horizontally or vertically (Some Rapido vans for instance require horizontal fitting)





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  • Toilet Cassette: Thetford C500
  • Vent Type: Floor Vent

SOG II System Kits for Motorhomes / Caravans Type G C500 Reviews

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Item arrived this morning at 8-15am!! Fantastic service. Thanks Tim ... Read more...

Tim Wheatley

Thank you for the very quick delivery of my order. ... Read more...

Betty Grinyer

Ordered the Handbrake Extender Friday and received it Saturday morning -excellent service! The extender was fitted within 10 minutes of being received, and has replaced the previously-fitted SVO version; the new extender is a much better and easier to use product, and 'does exactly what it says ... Read more...

Paul Foden

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