Caravan sink and waterless urinal that fit a thin van partition
Wall-mounted waterless urinal for campervans, motorhomes, converted minibuses, and glamping cabins. Urine flows through a hose into a separate container. No plumbing, no pump.
Why the cassette and separating toilet in a campervan fill up quickly
In a campervan, the main volume in the toilet is liquid. The cassette toilet needs to be emptied at a dump station or roadside restroom, which is the worst part of the trip. A compact separating toilet (Trelino, BOXIO, CompoCloset) reduces the problem, but its small liquid waste capacity still fills up.
Pi-Pi takes on this part and works alongside the toilet, not instead of it: men use the urinal standing up, against the wall, without water, and the liquid goes into a separate container. Less liquid enters the cassette or composting chamber, so they fill up more slowly; how much slower depends on the number of people and how you use the toilet.
Technical facts
- Weight 1.4–1.5 kg: the urinal is lightweight; on thin cladding or plywood partitions, it should be mounted to a stud or reinforcement to withstand accidental pressure
- Material LLDPE: operating range −40…+60 °C – suitable for an unheated van in winter and summer heat within these limits
- Installation without a plumber and special tools
- Stepped nozzle Ø24/32/40 mm: cut to fit your flexible hose into the container; if the hose diameter does not match any step, an adapter is needed
- Standard: closed top, for installation without ventilation – optimal if you don’t need to run a pipe through the roof
- Standard Plus: upper opening Ø70 mm for connecting to a ventilation channel, for example, with an outlet through the roof
- Standard Corner: corner model for a tight van corner, mounts directly into the corner without a mounting plate; upper port Ø70 mm, like the Standard Plus, weight 1.4 kg
What to do with collected urine
- To the dump station: the separate container is emptied without the hassle of a heavy cassette
- As a plant feed: diluted urine is sometimes used as a fertilizer; follow official or professional recommendations for your region on dilution ratios and rules
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Pi-Pi gives your campervan toilet a separate liquid circuit
The Thetford cassette toilet or a separating toilet in a campervan accumulates a lot of liquid, and emptying the cassette remains the most unpleasant task on the road. Pi-Pi is a separate wall-mounted urinal that works alongside the toilet, not instead of it: men use it standing up, and urine flows through a hose into a separate container. The cassette fills up more slowly; how much slower depends on the number of people and how you use the toilet.
- Trelino, BOXIO: compact models for van life; Pi-Pi collects liquid separately, so their capacity fills up more slowly
- Kildwick, CompoCloset (Cuddy): lower drain Standard goes into a separate container, and the upper port Ø70 mm on Standard Plus and Standard Corner connects to ventilation
- Cassette toilet: Pi-Pi relieves the cassette, so you have to empty it less often
Installation on a thin partition: the urinal is lightweight, but on thin cladding or plywood, it should be mounted to a stud or reinforcement (backing, block) – the mounting must withstand not only the weight but also accidental pressure.
Frequently asked questions
Have Questions?
Got a question? Message me – I’ll help you pick the right model for your garden shed or toilet setup and sort out delivery. I respond within one business day.
Mart Tamm
Account Manager for United Kingdom
Have questions about products, pricing, or partnership? Email me directly – I’ll respond personally.