Dometic VacuFlush Low Profile Flush Pump, 12 Volt DC
Dometic VacuFlush Low Profile Flush Pump, 12 Volt DC — Product description
This is the 12 Volt DC vacuum flush pump that brings a Dometic VacuFlush low profile toilet back to life. It's the OEM-correct part, Dometic MPN 317775212, and it's what creates the vacuum every VacuFlush head needs to work. If your low profile toilet has stopped pulling a clean flush, this is usually the part that's worn out.
The Dometic VacuFlush system is one of the cleanest, most water-thrifty toilet setups you can put on a boat, and the pump is the heart of it. This is the 12 Volt DC flush pump, Dometic part number 317775212, built as the OEM-correct replacement for VacuFlush low profile toilets. It's the piece that pulls the vacuum. Push the pedal, the pump runs, waste gets pulled from the bowl to the holding tank, and the bowl reseals with just a splash of water. When that vacuum goes soft or the pump won't cycle right, this is almost always the part you're chasing.
Here's why the pump matters so much on a VacuFlush head. Instead of grinding and pumping on demand, VacuFlush stores vacuum in the line between flushes. The pump builds that vacuum and shuts off, then holds it until the next flush. That's why these toilets sip water and flush with a fraction of what a standard marine head uses. But it also means a tired pump or a small air leak shows up fast. If the pump runs and runs without building vacuum, or it short-cycles every few minutes, the pump or its seals are usually done.
We see these come up for replacement most often on cruisers and liveaboards where the head gets daily use. Base seals and the internal valves wear out, and in saltwater service they can go inside a couple of seasons. If yours has been on the boat a while and the flush has gotten weak, swapping the pump is the fix that actually lasts. And it's worth doing the duckbill valves and seals at the same time. You've already got the unit apart, so replace the wear parts while you're in there and you won't be back at it next season.
Install is straightforward if you're comfortable with 12 volt wiring and a little plumbing. The pump draws a real spike of current when it kicks on, so give it a dedicated circuit with heavy enough wire and its own breaker. Don't tap it off a lighting circuit. Mount it solid, get the base gasket seated flat, and torque the bolts down evenly. Uneven bolts are the number one cause of a nagging air leak right after a swap. Once it's in, run it and watch the vacuum build and hold. If it holds, you're done. If it keeps running, check your vent line first before you blame the new pump, because a clogged vent will make a perfectly good pump run forever.
The pump doesn't have to sit right under the toilet. It's designed to mount remotely, so you can tuck it in a locker or a nearby compartment and run the vacuum line to the head. Keep the run reasonable and check your toilet's manual for the layout it expects. On tight low profile installs, confirm you've got clearance for the pump body and the hose fittings before you commit to a spot.
This is the low profile pump, so make sure that's what your toilet is. VacuFlush built both standard and low profile heads, and the pumps aren't interchangeable across every model. The quickest way to be sure is to match your existing pump's part number or confirm your toilet is a low profile VacuFlush before you order. This same pump serves both marine and RV VacuFlush low profile toilets, so if you're running one in a coach as well as the boat, it's the same part.
At this price point, nobody buys a VacuFlush pump for fun. It's a repair you make because the system's worth keeping, and it is. Get the right pump in, freshen the seals, wire it properly, and a VacuFlush head will give you years of quiet, low-water service. If you're not sure this is the exact pump for your toilet, send us your model and we'll help you confirm before you buy.
Key Features
- 12 Volt DC vacuum flush pump, the OEM-correct replacement for Dometic VacuFlush low profile toilets
- Dometic part number 317775212, built to factory spec so it drops into the existing VacuFlush plumbing
- Builds and holds vacuum between flushes, which is what lets a VacuFlush head sip water instead of pumping every cycle
- Mounts remotely from the toilet, so you can tuck it in a locker and run the vacuum line to the head
- Fits both marine and RV VacuFlush low profile toilets, one part for the boat and the coach
- Runs on a standard 12V DC circuit, wire it to a dedicated breaker sized for the startup draw
- Serviceable base and gasket, replace the duckbill valves and seals during the swap for a leak-free result
Why Buy from NVN Marine
- Authorized Dometic reseller, full manufacturer warranty
- NMEA member and ABYC certified, advice from real boat techs
- Same-day shipping before 3 PM ET on in-stock items
- NY headquarters and Fort Lauderdale flagship retail store
Technical specifications
| Title | Flush Pump; Replacement For Dometic VacuFlush Low Profile Toilets; 12 Volt DC |
|---|---|
| Brand | Dometic |
| Manufacturer Part Number | 317775212 |
| UPC | 713814237653 |
| Voltage | 12 Volt DC |
| Product Type | Vacuum Flush Pump |
| System | Dometic VacuFlush |
| Toilet Profile | Low Profile |
| Function | Builds vacuum for VacuFlush toilet flush cycle |
| Application | Marine and RV Sanitation |
| Fitment | OEM-correct replacement for VacuFlush low profile toilets |
| Mounting | Remote mount from toilet |
| Condition | New |
Frequently asked questions
Which toilets does this pump fit?
It's the OEM-correct pump for Dometic VacuFlush low profile toilets. VacuFlush built both standard and low profile heads and the pumps aren't interchangeable across every model, so confirm yours is a low profile unit or match your existing pump's part number before ordering.
Is this a 12 volt or 24 volt pump?
This one is 12 Volt DC. Dometic makes the same low profile pump in a 24 volt version too, so check your boat's system voltage before you buy this one.
Is this a genuine Dometic OEM part?
Yes. It's Dometic manufacturer part number 317775212, the factory replacement pump. It drops into the existing VacuFlush plumbing without adapters.
Will it work in an RV toilet as well as a boat?
Yes. The VacuFlush low profile toilet is used in both marine and RV setups, and this is the same pump for both. If you run one in a coach and one on the boat, it's the same part number.
What wiring does the pump need?
Give it a dedicated circuit with its own breaker and wire heavy enough to handle the startup current spike. Don't tap it off a lighting circuit. Follow the gauge and breaker sizing in your toilet's manual for the exact numbers.
The pump runs constantly and won't build vacuum. What's wrong?
Check the vent line for a clog first, because a blocked vent will make a good pump run forever. After that, look for an air leak at the base gasket or worn internal seals. A pump that short-cycles or never holds vacuum usually has tired seals.
Should I replace the seals and duckbill valves at the same time?
Yes, we'd do them together. You've already got the unit apart during a pump swap, so freshening the duckbill valves and base seals means you won't be back in there next season, especially in saltwater service.
Does the pump have to mount directly under the toilet?
No. It's designed to mount remotely, so you can tuck it in a nearby locker or compartment and run the vacuum line to the head. Keep the run reasonable and check your manual for the layout it expects.
How do I know this is the right pump for my toilet?
Match your existing pump's part number, or confirm your toilet is a low profile VacuFlush. If you're not sure, send us your toilet model and we'll help you confirm the right pump before you buy.
What warranty comes with it?
Full Dometic manufacturer warranty. We're an authorized Dometic reseller, so any warranty claim runs through us back to Dometic.
