Winterize Manufacturing - RV Blow Out Plug - New Design


Winterize RV Blow Out Plug
  • Clears the water lines of RVs, travel trailers, campers, boats, pressure washers, and sprinkler systems to protect from freezing temperatures
  • Made for single person operation - this new quick connect RV blow out plug design is easy and simple to use
  • Also designed for marine use - fresh or salt water
  • Quick connect air compressor fitting (most common style produced allowing max air flow) will attach to any ¼” universal coupling
  • Allows a direct quick connection between your air compressor and the water city inlet of your RV, travel trailer, camper and boat 
  • Blow out plug is made of strong, high quality aluminum - corrosion resistant and durable 
  • Blow out plug can be attached to anything that has a female garden hose thread
  • Winterizing your RV with our blow out plug will create a safer, more secure, hands-free connection between compressor and water line.
  • Large bored out design allows maximum air flow

On sale for $9.85!

city water connection with filter screen
plug easily screws into place over filter screen
plug's quick connect tip attached safely to air compressor
attach air compressor and walk away
  1. Thread male garden hose end of blow out plug into city water port or other female garden hose end.
  2. Attach quick connect compressor end to universal coupling and blow your lines clear.
  3. DO NOT EXCEED 50 PSI – this may cause bodily injury or property damage.


  1. Disconnect all inline water filtration systems and bypass them before starting.
  2. Drain any fresh water tanks.
  3. Drain hot water tank (make sure water is not hot or under pressure) and then by-pass the water heater (you may need to install a by-pass kit).
  4. Connect your new blow out plug to your city water inlet.
  5. Attach your air compressor and charge your system between 30 –50 PSI.
  6. DO NOT EXCEED 50 PSI. This may result in bodily injury or property damage.
  7. As the lines are fully charged with air, alternate opening all hot and cold water faucets. Don’t forget the toilets, showers (outdoor also), and low point drains. Start faucets from the closest to the farthest away. Repeat this step until no water or mist is discharged from your faucets and you are sure all water has been removed from the system. To help check this you can hold your hand under each open faucet or drain to verify no moisture is still being released.
  8. If all water has been removed from the system correctly then no anti-freeze will be needed in your drinking lines. If you are not sure that all water has been completely removed you can still fill your water lines with non-toxic RV antifreeze.
  9. Pour a few cups of non-toxic RV anti-freeze into each drain, toilet, and black/gray holding tanks.
  10. Consult your manufacturers manuals on how to properly winterize your ice maker, washing machine, and other appliances.

These steps are to be used as a guideline to help assist you in winterizing your water lines. It is important that you consult your owner’s manuals for specific winterizing instructions.

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