Separett Villa Extend

Silent and odorless compost toilet

Separett Villa is the most advanced, trouble free composting toilet available for on grid or off-grid living. It is waterless and urine diverting and with its simplicity and unlimited capacity it offers a comfortable toilet visit. Thanks to the urine separation, both the smell and the volume of the waste that must be disposed of are reduced. With the strong 12V fan, the toilet can handle installations up to 6 meters long and with up to three 90° bends.

The toilet can be operated with 110-240 V AC or with 12 V DC solar cell / battery power. The fan has very low energy consumption of 0.06 kWh / 24h and is therefore suitable for battery or solar cell operation as well. The battery and battery cables are not included.

High Reliability

Villa has high operational reliability, is easy to install and does not take up more space than a standard toilet seat. The toilet space is constantly ventilated by the toilet fan and urine is separated from other waste, which makes the toilet space odorless. The view screen hides the dry waste and is only pushed away when you sit down to use the toilet.

Villa comes with a 5-year warranty against all manufacturing defects.

• Separett Villa® Extend toilet, 12V / 110-240 V
• User and installation manual
• Universal adapter for power socket
• Straight connector piece to fit the 90° bend
• 90° bend for the Ø3.5” ventilation pipe
• 1.47” long Ø3.5” pipe for simple ventilation installation through the wall
• Insect net and rain cap for Ø3.5” ventilation pipe
• Indoor flashing for the Ø3.5” ventilation pipe
• 6.6 ft white urine hose Ø32 mm to lead out the urine
• Indoor flashing for the Ø1.26” urine hose
• 90° bend for the Ø1.26” urine hose
• Straight connector for the Ø1.26” urine hose
• Silicone strip to seal the bottom of the toilet
• Wall mount for attaching the toilet
• 2 x wall mount to attach the urine hose
• Screws for mounting the toilet to the wall
• Installation template – has markings for drilling holes and attaching the toilet

The external container

Villa Extend needs to be connected to an external solids container that is placed under the toilet area. Keep in mind that the space underneath the toilet needs to be accessible from the outside to facilitate emptying. In the delivery of the toilet no external container is included. The Separett External container kit is available separately. When purchasing the accessory package, two external latrine containers of 13 gallons, 39 inches of drainpipe Ø 6.3 inches, connecting part to the latrine container, a lid with a hole, a solid lid and the necessary screws are included.

Toilet placement

Separett Villa has no requirements for room temperature and works in both cold and warm spaces. The only requirements are that you must be able to lead the urine away and fit a ventilation pipe.

The toilet is made to be placed on the floor against the wall, and for extra stability it should be attached to the wall.

Drill holes according to installation template

The installation instructions show possible installation options for urine drain and ventilation pipe through the wall, the ceiling or the floor. The installation template shows the places for holes in a simple installation through the wall behind the toilet. 

Install ventilation pipe

The toilet is designed for 3.5" (schedule 40) ventilation pipe. Separett Villa can be installed with up to 6 meters of ventilation piping and three 90-degree bends. Ventilated air can go through a wall, floor or ceiling, for example, up into an attic and out through a suitable side of the house. If there is already a ventilation pipe present from a previous toilet installation, the toilet may be connected to that duct, provided that it is not smaller than 3.5" and that it meets the piping requirements.

The toilet comes with a coupling for connecting the toilet to 3.5" inch piping (schedule 40).

Install urine hose

The toilet is delivered with a 2-meter (6.6 ft) urine hose. To connect this to the toilet, use the included straight joint or the 90-degree joint.  It is possible to connect the urine tube so that no pipe is visible where the toilet is installed. This is achieved by angling the 90-degree connection downwards or using the straight connection leading the pipe out through the wall behind the toilet.

Recommendations for installation of urine hose

Villa provides the option of installing the urine hose without any visible pipes/tubes in the bathroom. Below are a few tips that should be followed to maintain a well-functioning urine outlet over time and all year round.

• If you are going to go through an insulated wall or a wall with an air gap between the inner and outer wall, you must use a pipe for the penetration, or lead the hose through a pipe. Pipes are used to reduce the risk of pests causing damage to the tube.
• If you are going to run the urine a longer distance than the 2 meters (6.6 ft) of the supplied hose, you should switch to a pipe after the 2 meters (6.6ft). Since urine contains minerals that can accumulate in pipes/ hoses, we recommend that the subsequent pipe have an internal diameter of at least 1.5" to avoid blockages.
• Make sure that you always have a downward inclination of at around 2 degrees (2 cm per meter or 0.8 inch per 40 inch) throughout the piping, also make sure that there are no air pockets created by bends in the hose.
• If the toilet is to be used in winter, outdoor pipes must have an internal diameter of at least 1.5”.
• If the toilet is to be used in winter, we recommend that you insulate outdoor pipes with pipe insulation. This insulation can be bought in most DIY stores.
• An important rule for longer installations (over 2 meters (6.6ft)) is that the sooner you switch to pipes with a larger diameter, the lower the risk of blockages in the pipes.
• Do not place pipe joints near electrical appliances or wall sockets. This is to prevent liquid from coming into contact with electricity in the event of a leak

Many people dispose of toilet waste the same way they would dispose of diapers, but it’s also possible to compost it into nutrient-rich compost.

Keep in mind that the waste is not composted when you empty the bucket. Human waste should be composted for at least 6 months, preferably 12 months, to ensure pathogens are eliminated. Mixing garden waste, kitchen scraps, and toilet waste helps speed up the process and improve the result. A good rule of thumb is to plan for at least 30 gallons (110 liters) per user, using two containers so one can rest while the other is in use.

Always use a sealed bin or a container with a collection tray to prevent leaching. Make sure it has a solid lid and secured ventilation grates to keep out rodents, insects, and rain.

Read more about how compost toilets work

No need for an agitator or bulking material

Many composting toilet models on the market include an agitator. However, effective composting requires significantly more volume and higher temperatures than what these compact toilets provide, making an agitator unnecessary in units of this size.

Agitators also introduce components that come into direct contact with waste, making them harder to clean and increasing the risk of mechanical failure.

Separett toilets remain odorless thanks to an efficient ventilation fan, without the need to add bulking material or stir the contents. In fact, adding bulking material to the solids container can cause it to fill up faster and may even damage the fan, as fine dust particles can be drawn into the ventilation system.

Many users connect the urine outlet from Separett Villa to a greywater system, a soakaway, or a sealed urine container for later disposal. However, urine can also be reused as a valuable fertilizer. When diluted with water at a 1:8 ratio, for example using the Separett Ejectortank, it becomes a safe and nutrient-rich fertilizer suitable for non-edible plants. Urine contains nitrogen, phosphorus, and potassium, all essential for healthy plant growth.

If storing urine, use a closed container and empty it regularly to avoid odor. Never allow urine to run directly onto the ground without proper treatment like a soakaway. A simple soakaway can be made by digging a pit about 24–40 inches (60–100 cm) deep, filling it with gravel or stones, and placing a perforated pipe into the center. Cover with a breathable layer to prevent blockages and odors.

Always follow local regulations when handling greywater or using urine as fertilizer.

• Capacity: Unlimited - Empty when needed
• Product weight: 42 lbs
• Package weight: 46 lbs
• Max user weight: 330 lbs
• Product measurements: L 26.5" W 19" H 21.3"
• Seat height: 17.3"
• Box size: L 30.3" W 18.5" H 26"
• Material: Polypropylene (PP), high gloss, recyclable
• Emptying interval with 4 users (liquids): When the container is full (if used)
• Emptying interval with 4 users (solids): When the container is full (if used)
• Energy consumption: 0.06 kWh / 24 h
• Power adapter: 110-240 V universal adapter
• Total effect: 12 V / 2.5W / 210 mA
• Voltage: 12 V
• Ventilation duct: ⌀3" (sch 40)
• Urine pipe: ⌀1.26"
• Noise level in use: less than 30 dB(A)

Separett Villa Extend user manual and installation guide

Separett Villa Extend installation template