TROBOLO urine diverter grey with wooden toilet seat - insert for DIY composting toilet
- TROBOLO urine diverter made of grey polypropylene with a wooden seat and lid. It separates solids from urine, fits standard toilet seats and lets you drain urine through a DN32 hose.
The TROBOLO urine diverter is the heart of every composting toilet. This grey polypropylene insert separates urine from solids right in the bowl, so both go into separate containers and are easy to dispose of. The set also includes a handmade wooden seat with lid, giving you everything for building your own toilet in a camper, cabin or garden.

Key features
- anatomical design for reliable separation of solids and liquids regardless of the user's size, weight or gender
- adapter system with filter sieve that you can replace in seconds
- urine can go into a container or out through a DN32 hose
- smooth high-gloss surfaces for easy, hygienic cleaning
- solid design and replaceable parts for a long service life
- wooden seat with lid made of 12 mm alder and birch plywood included

How the urine diverter works
You use the toilet just like a conventional one. Urine is collected in the front part of the insert and drains into a separate liquids container, an external tank or a pipe. Solids pass without contact through the rear opening into a container lined with an inlay that you lift out and dispose of or compost. The deep-drawn collar of the rear opening protects the inside of the toilet from soiling.

The TROBOLO adapter system
The part that wears most is the filter sieve, as deposits build up on it over time. With the TROBOLO diverter you only replace the adapter, while the rest of the insert keeps working. The hose connector adapter takes a DN32 hose, so urine can go, for example, into the grey water tank of a motorhome. The integrated seal keeps every connection tight, and the sieve holds back paper and litter so the drain does not clog.
Fitting it in your own toilet
A cutting template is included for marking the opening in the lid of your box or cabinet. The inner opening of the insert is 310 x 240 mm, and the diverter itself measures 170 x 375 x 322 mm. The included wooden seat with lid, 55 x 404 x 330 mm, mounts on top. It is handmade from 12 mm alder and birch plywood with stainless steel hinges.
Scope of delivery
- urine diverter (composting toilet insert)
- wooden toilet seat with lid
- cutting template
- hose connector adapter for DN32 with filter sieve
- filter sieve adapter
- assembly instructions
- care and maintenance instructions
Cleaning and maintenance
The smooth polypropylene surface only needs regular wiping. The manufacturer recommends removing deposits in the urine section with a citric acid solution, as described in the enclosed care instructions. The sieve and seal can be replaced when worn without replacing the whole insert.
Matching TROBOLO products
- Wooden toilet seat with lid - also sold separately as a spare part
- Urine diverter grey without seat - if you already have a seat
- Hose connector adapter DN32 with filter sieve - spare part for draining urine through a hose
- Filter sieve adapter - spare part for the diverter
- Compostable inlays 6.5 l - for the small solids container
- Compostable inlays 22 l - for the 11 l and 22 l containers
Technical data
| Feature | Value |
|---|---|
| Manufacturer | TROBOLO |
| Manufacturer code | STGXX1375 |
| Diverter colour | grey |
| Diverter material | polypropylene |
| Diverter dimensions | 170 x 375 x 322 mm (height x depth x width) |
| Inner opening | 310 x 240 mm (longitudinal x transverse) |
| Urine drainage | liquids container or DN32 hose |
| Seat | wooden seat with lid included |
| Seat material | 12 mm alder and birch multilayer board, multiple lacquering |
| Hinges | stainless steel |
| Seat dimensions | 55 x 404 x 330 mm (height x depth x width) |
Questions and answers
Does the diverter fit a standard toilet seat?
Yes, the TROBOLO insert is compatible with any standard toilet seat. In this set the wooden seat with lid is already included.
Can urine be drained through a hose?
Yes, the hose connector adapter takes a DN32 hose, so urine can be drained out of the toilet, for example into a grey water tank.
Which containers fit under the diverter?
The manufacturer pairs this insert with TROBOLO solids containers of 6.5 l, 11 l or 22 l and liquids containers of 4.6 l or 10 l, also available in the DIY sets.
What if the sieve wears out?
You only replace the filter sieve adapter, which is available separately as a spare part.
Manufacturer
TROBOLO Europe Sp. z o.o., ul. Św. Marcin 29/8, 61-806 Poznań, Poland.



































