If your building runs Sloan WES-150 waterless urinals, you already know the fixture was the easy part. The recurring line item is the cartridge — the sealed trap that has to be replaced on a schedule to keep the restroom odor-free. So the question that lands on every facility manager's desk sooner or later is simple: what is the right Sloan WES-150 cartridge replacement, and do I have to buy the branded part every time?
The short answer: you have a choice. A compatible, long-life cartridge fits the same WES-150 outlet and drops straight in — no new fixtures, no plumbing changes. Here is how it works and what to look for.
What the Sloan WES-150 Cartridge Actually Does
A waterless urinal has no flush. Urine drains by gravity through a trap cartridge seated in the outlet. Inside that cartridge, a one-way barrier lets liquid pass down to the waste line while blocking sewer gas from rising back into the room. Over time the barrier is consumed and the cartridge collects sediment — and when odor appears, it almost always means the cartridge is due. Replacing it on schedule is the single most important maintenance task for any WES-150 installation.
The Fixture Is Bought Once — the Cartridge Is Bought Again and Again
This is the part that quietly drives the cost of a waterless program. The urinal is a one-time purchase; the cartridge is an ongoing one, multiplied by every fixture in the building and every replacement cycle per year. Branded spare parts are typically where that adds up, because the replacement part carries the same distributor markup year after year. Cutting the per-cartridge cost — without changing anything about the fixtures you already own — is the fastest way to lower the running cost of a WES-150 estate.
Magma 3.0: A Direct-Fit Replacement for the Sloan WES-150
MaproWorld's Magma 3.0 odor trap is engineered to fit the same cartridge format used by Sloan WES-150 urinals, so in most installations it is a direct replacement with no modification. It focuses on the three things WES-150 owners care about:
- Long service life — rated for up to 20,000 uses per cartridge, so fewer changeouts per year.
- No proprietary gels or sealant liquids — the sealed cartridge provides the odor barrier itself, so there is no separate consumable to keep buying and dosing.
- Direct from the manufacturer — you buy the part without the middleman markup that inflates branded spare-part pricing, and it ships in 6-, 18-, and 36-packs so the per-cartridge price drops as you buy the quantity a real estate needs.
For the full picture of how cartridge choice fits the economics of a waterless program, see our waterless urinal ROI guide.
How to Switch from the Branded WES-150 Cartridge
- Confirm the format. Check that your fixtures use the standard WES-150 cartridge outlet. If you are unsure, send us a photo of the outlet and we will confirm the fit before you order.
- Order the compatible replacement. That is the Magma 3.0, in the pack size that matches your fixture count.
- Remove the old cartridge. Most lift or twist out; some branded units use a key, which the compatible cartridge does not require.
- Seat the new cartridge and confirm the seal.
- Log the date. A simple maintenance log means you replace on schedule, before any odor appears.
Will It Void Anything?
Replacing a consumable cartridge is routine maintenance, not a modification to the fixture. You are swapping the part that is designed to be swapped. If you run a mixed estate — some Sloan, some other brands — standardizing on one compatible, long-life cartridge is exactly what simplifies stocking and servicing across the whole portfolio.
Frequently Asked Questions
Is the Magma 3.0 a direct replacement for the Sloan WES-150 cartridge?
Yes. It is designed to fit the same cartridge format as the Sloan WES-150 and drops in without modification in most installations. If you are unsure, send us a photo of your outlet and we will confirm before you order.
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.
Can I buy in bulk to lower the cost?
Yes. The Magma 3.0 ships in single, 6-, 18-, and 36-pack quantities, with the per-cartridge price dropping as the pack size increases — bought direct from the manufacturer.
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 urinals, a compatible, long-life cartridge is the fastest way to cut your recurring restroom costs — without touching 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.