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Replacement Pressure Switch for Dometic VacuFlush Vacuum Tank

Replacement Pressure Switch for Dometic VacuFlush Vacuum Tank

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Dometic RV Toilets - DOM45FR
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Replaces a worn or damaged pressure switch for the vacuum tank in your Dometic VacuFlush system. Switch regulates pressure in your VacuFlush accumulator tank. Switch assembly and O-ring included. 1-800-940-8924 to order Dometic accessories and parts part number DOM45FR or order online at Free expert support on all Dometic products. Guaranteed Lowest Price and Fastest Shipping for Replacement Pressure Switch for Dometic VacuFlush Vacuum Tank. Accessories and Parts reviews from real customers.
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Dometic Accessories and Parts

  • RV Toilets
  • Vacuum Parts
  • Tank Switch
  • Dometic

Replaces a worn or damaged pressure switch for the vacuum tank in your Dometic VacuFlush system. Switch regulates pressure in your VacuFlush accumulator tank. Switch assembly and O-ring included.


  • Replaces the pressure switch in your Dometic VacuFlush vacuum tank
  • Switches off vacuum pump as pressure increases to prevent over-pressurization
  • Screws onto your VacuFlush accumulator tank
  • Includes vacuum switch and O-ring
  • Made in the USA

385318032 Replacement Vacuum Tank Switch for Dometic Sealand Vacuum Flush RV Toilet

Replaces Dometic 385318032

Item # DOM45FR

Video of Replacement Pressure Switch for Dometic VacuFlush Vacuum Tank

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Review of Dometic RV Toilet Parts - Replacement Vacuum Tank Switch - DOM45FR

Ellen: Hey everyone. I'm Ellen here at, and today we're taking a look at the replacement vacuum tank switch. This is going to be for your Dometic vacuum flush RV toilet. This can also be used for boat toilets as well. It's going to fit a lot of those out there, and this is going to be a very important part to make sure that everything is flushing properly, that you're getting the proper vacuum pressure for your system. So this is factory set here.

This little wheel is adjustable but you do not want to do any kind of adjustment to it yourself. As I said, they do adjust the pressure at the factory and then they put a little epoxy on there to make sure that it can't be tampered with. So just a note there. Comes with a large grommet or O ring in place to make sure that it has a good tight seal into our tank.You might need to drill a couple holes to get these two ports actually installed and tightened down. Kind of depends on your setup and whether or not it requires those holes to be drilled.

But it should just run into your vacuum regulator tank and get you back up and running. The wiring connections will go up here at the top. You should have ring terminals to go underneath these flathead screws. So just back those out, put your wires in place. Of course, you do want to make sure that you cut off the water to your system and the power to make sure that nothing is going to go awry whenever you get this in place, or whenever you go to take off the old one.

And it's also a good idea to evacuate out your tank as much as possible to get everything cleaned out as much as you can before you get started.But that's pretty much going to do it for our look at the placement vacuum tank switch for your Dometic VACU flush RV toilet. Thanks for watching.


See what our Experts say about this Dometic Accessories and Parts

  • Trouble Removing Old Pressure Switch For Dometic VacuFlush Vacuum Tank
    There is not a special tool for removing the old Pressure Switch # DOM45FR from your Dometic VacuFlush Vacuum Tank. These are common to have issues removing as the rubber O-ring dries out and the plastic will swell over long periods of time making it difficult to remove. You can use a penetrating oil that is safe for use on plastic parts to help you remove the old pressure switch.
    view full answer...

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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Kathleen M
Installed by:
Kathleen M
Employee Alexander C
Written by:
Alexander C

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