If you run waterless urinals, the recurring question is not the fixture — it is the cartridge. Every waterless urinal depends on a small trap cartridge (or a liquid sealant) to block odor, and that part needs periodic replacement. So the practical question facility managers ask is simple: what is the right waterless urinal cartridge replacement, and will it fit the urinals I already have?
The good news: you are usually not locked into one supplier. Many popular waterless urinals — including Sloan WES-150 and Falcon Waterfree models — accept a compatible replacement cartridge. MaproWorld's Magma 3.0 odor trap is engineered as exactly that: a direct, longer-lasting replacement, shipped direct from the manufacturer. Here is how compatibility works and how to choose.
What a Waterless Urinal Cartridge Does
A waterless urinal has no flush. Instead, urine drains through a trap cartridge seated in the outlet. Inside, a one-way barrier — a sealed mechanical trap or a floating liquid sealant — lets liquid pass down to the drain while stopping sewer gas from rising back into the room.
Over time that barrier is consumed or fouled: liquid sealant evaporates and must be re-dosed, and cartridges collect sediment. When odor appears, it almost always means the cartridge or sealant is due for service. Replacing it on schedule is the single most important waterless urinal maintenance task — see our full cost and savings guide for how this fits the bigger picture.
Are Waterless Urinal Cartridges Interchangeable?
Partly. Cartridges are built to specific outlet formats, so the question is whether a replacement matches the format your fixture uses. Several of the most common commercial systems share compatible dimensions, which is why a single well-designed cartridge can serve multiple brands.
The Magma 3.0 is designed to fit the widely used cartridge formats found in these systems:
| System | Magma 3.0 compatible? |
|---|---|
| Sloan WES-150 | Yes — direct replacement |
| Falcon Waterfree | Yes — direct replacement |
| Ideal Standard waterless urinals | Yes |
| Other standard-format waterless urinals | Often — check the outlet format |
Not sure which cartridge your fixtures use? Send us a photo of your urinal outlet and we will confirm the fit before you order.
Magma 3.0: A Compatible Replacement for Sloan WES-150 and Falcon
The Magma 3.0 is a sealed trap cartridge built for the same fittings as Sloan WES-150 and Falcon Waterfree urinals, so in most installations it drops straight in with no modification. Its design focuses on three things facility teams care about:
- Long service life — rated for up to 20,000 uses per cartridge, which means fewer changeouts per year.
- No proprietary gels or sealant liquids — the sealed cartridge does the work, so there is no separate consumable to keep buying and dosing.
- Direct from the manufacturer — you buy the part without the distributor markup that inflates branded spare-part pricing.
For a facility with dozens of fixtures, the cartridge is the real long-term cost of a waterless program. Choosing a compatible, long-life, direct-supplied cartridge is where the savings compound — the same logic we walk through in our waterless urinal ROI guide.
Sealed Cartridge vs. Liquid Sealant: Why It Matters
Waterless systems fall into two broad camps. Liquid-sealant designs rely on a barrier fluid that floats on top of the trap; it evaporates and must be topped up, and the trap must be cleaned around it. Sealed-cartridge designs like Magma 3.0 contain the barrier inside a replaceable unit — you swap the whole cartridge on a schedule instead of dosing liquid between services.
For most commercial teams, the sealed-cartridge approach means fewer steps, fewer consumables to stock, and a more predictable maintenance routine — which is exactly what keeps a restroom odor-free without extra labor.
How to Replace a Waterless Urinal Cartridge
- Identify the format. Check whether your fixture uses a Sloan WES-150, Falcon, or standard cartridge outlet.
- Order the compatible replacement. For the systems above, that is the Magma 3.0.
- Remove the old cartridge. Most lift or twist out; some brands use a key, which the compatible unit does not require.
- Seat the new cartridge and confirm the seal.
- Log the date. A simple maintenance log means you replace on schedule, before odor appears.
The Cost Angle: Buy the Part Direct
Branded spare parts are often where a waterless program quietly gets expensive — the fixture is bought once, but the cartridge is bought again and again. Buying a compatible cartridge direct from the manufacturer removes the middleman markup on the part you replace most often. Over a building's fixture count and a multi-year horizon, that is where the real recurring savings live.
Frequently Asked Questions
Is the Magma 3.0 compatible with Sloan WES-150 urinals?
Yes. The Magma 3.0 is designed as a direct replacement cartridge for the Sloan WES-150 fitting and drops in without modification in most installations.
Does it fit Falcon Waterfree urinals?
Yes. It is built for the same cartridge format used by Falcon Waterfree urinals, as well as Ideal Standard and other standard-format waterless urinals.
How long does one cartridge last?
The Magma 3.0 is rated for up to 20,000 uses per cartridge. Actual life depends on traffic; a maintenance log helps you replace on schedule.
Do I need special gels or sealant liquid?
No. The sealed cartridge provides the odor barrier itself, so there are no separate gels or sealant liquids to buy and dose.
How do I confirm compatibility with my fixtures?
Send us a photo of your urinal outlet and we will confirm the correct cartridge before you order.
Confirm Your Fit and Order Direct
If you run Sloan WES-150, Falcon Waterfree, or other standard-format waterless urinals, a compatible, long-life cartridge is the fastest way to cut your recurring restroom costs — without changing your fixtures.
👉 See the Magma 3.0 odor trap or send us your fixture details for a compatibility check and quote. As a direct manufacturer, we confirm the fit and quote the part without middleman markup.