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Valterra RV Blow Out Plug with Threaded Valve for Winterizing - Lead Free Brass

Valterra RV Blow Out Plug with Threaded Valve for Winterizing - Lead Free Brass

Item # P23518LFVP
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Valterra RV Fresh Water - P23518LFVP
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Use this blow-out plug to remove water from your RV's water lines before storing your RV for the winter. Screw plug into your RV's city water inlet and inject air through the threaded valve to blow out any water. Brass is lead-free. Lowest Prices for the best rv fresh water from Valterra. Valterra RV Blow Out Plug with Threaded Valve for Winterizing - Lead Free Brass part number P23518LFVP can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (15)
  • Q & A (1)
  • Videos (1)
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Valterra RV Fresh Water - P23518LFVP

  • Winterization
  • Blow-Out Plug
  • Valterra

Use this blow-out plug to remove water from your RV's water lines before storing your RV for the winter. Screw plug into your RV's city water inlet and inject air through the threaded valve to blow out any water. Brass is lead-free.


  • Blow-out plug helps clear out water from your RV's water lines before adding antifreeze
  • Simple operation
    • Thread into your RV's city water inlet
    • Open all drains and faucets in your RV
    • Blow air through your RV's pipes using an air compressor (sold separately)
  • Sturdy brass construction is lead free
  • Screw-on plastic valve cap included

P23518LFVP Valterra Blowout Plug with Screw-On Valve for RV Winterization - Brass

California residents: click here

Video of Valterra RV Blow Out Plug with Threaded Valve for Winterizing - Lead Free Brass

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

Video Transcript for Valterra Threaded Valve RV Blow Out Plug Review

AJ: What's up, everybody It's AJ with etrailer.com. Today, we're going to be checking out this blow out plug from Valterra. Now this is brass fitting here that screws in to our city water connection, and what that's going to do, we'll unscrew the cap here, is allow us to hook up an air hose to this to blow out all the water out of our lines.Now, why would we want to do that It's a normal thing you do before you winterize your rig. That way, you can blow out all the excess water in the pipes and then follow it with anti-freeze. I also suggest getting in the habit of doing it after any long trips, just to get any of that water out of there because your pipes kind of go like this on the inside. And in that dip, that's where the water usually collects and stays.

So you might not get out of there even if you just drained the fresh water tank. It's going to stay in there, and it only takes a couple of days for it to get stagnant. And then a week later, it might grow a little bit of algae. So then it creates problems down the line when you're going to shower or drinking water. I don't want any of that in there so just go ahead and blow it out every time.

That way, you don't have that problem.Before you start running air through your lines, there's a couple of steps you have to go through to make sure your rig is ready to do that. We're going to walk through that together and go step by step on what you need to do. First step is you want to go ahead and find your freshwater tank lever here. Ours is located down there. I'm going to pull this handle and let as much water out as we can.

That way, there's less in the lines. I'm just going to pull this and just watch it drain. That's letting most of the water out. That way, when we hook up the compressor, we'll just blow out a little bit of the extra water and we'll be good.Our next step is we're going to go ahead and throw the switch to bypass the water heater. Now, why we're doing that is we don't want to pump a bunch of water into the water heater, or if you're getting ready to winterize it, you don't want to pump a bunch of antifreeze into your water heater.

So flipping that switch bypasses it, and we're good to go. Now, ours is down here. Here you can see, I flipped that switch up now. And so we're good to move on to the next step.Now we're going to open our valves because if we're going to pump a bunch of air in through the lines, we don't want to blow up the lines if there's nowhere for the air to go. So we're going to start with the sink. You're probably going to get some water coming out. We'll let that drain. You can see it's already slowing down, and we're going to go through one by one and go through all the valves. So we're going to do the sink in here, sink in the bathroom. We're going to turn on the shower and even flush the toilet. And with the hot and cold, you go ahead and throw the other one too. Just let all the water out of both lines. Another thing to do just to be safe before we put air through the lines is go ahead and step down on the pedal of our toilet here. That way it would release anything else in there before we add air.Now there's two different approaches for this. You can open up all the valves at once and blow out the lines. We're going to do them one by one. So remember the sink is open. Now we're can attach our compressor, which I went ahead and lowered the psi to 30. That way, there's not too much air going in there. We're not going to blow up any lines or anything like that. We want to be safe and careful with that too. I'm actually surprised at how much water is still coming out and that we're leftover in the lines. We already pulled the tank, drained it all the way down. This just shows you, you don't want this water just sitting there in your lines.Already went back and closed the valves in our kitchen sink. Now we're going to come here to the bathroom sink and open these up. Looks like not a lot is coming out this time. We got most of it in the kitchen. Next up is the shower. Same as before. Just open up both of these valves all the way. Let's see what happens.With the lines all blown out, I'm just going to come back to our fresh water tank and close the valve. It really is that easy to clear out your lines. That's why I suggest just getting in the habit of doing it when you come back from your long trips. Might as well use the fitting you bought. When I had this installed, I noticed it was in there nice and tight. There was no air coming out of the side. I didn't hear anything so that's good. And with the brass, I think it's going to last you a really long time. You can drop it. Don't have to worry about it breaking on the concrete or anything like that. This end too, same thing.Now they do offer a couple of different options. Just to show you why I think this one's the best, I'm going to go show you the other two.This one would be the half plastic and half brass one. Gets the job done just fine. It gets in there nice and tight, but this part's plastic so that worries me just a little bit. This part's brass so this is going to hold up just fine. The other option would be all plastic with a rubber cap on this end. So you kind of peel that off. It's not quite as convenient as the sealed on cap that you can just screw on there and then not worry about it sliding off on its own. And this part again, gets the job done. It's just plastic. I don't trust it or myself. If you're not as clumsy as I am, maybe you're not worried about it, but I just like the brass one. It's going to last longer through whatever I put it through.Well, that does it for a look at the different blow out plugs from Valterra. I hope this helped..

Customer Reviews

Valterra RV Blow Out Plug with Threaded Valve for Winterizing - Lead Free Brass - P23518LFVP

Average Customer Rating:  4.9 out of 5 stars   (15 Customer Reviews)

Use this blow-out plug to remove water from your RV's water lines before storing your RV for the winter. Screw plug into your RV's city water inlet and inject air through the threaded valve to blow out any water. Brass is lead-free.

- P23518LFVP

Seems to be well made and functions as expected. No concerns.

- P23518LFVP

Well made and worked as advertised.

- P23518LFVP


- P23518LFVP

This item was very useful in winterizing my self contained trailer i had been advised to get one but didn't know where to find it so when I saw it on your website I ordered it it was reasonably priced easy to order and arrived quickly all in all good experience

- P23518LFVP

This simple device should make our winterizing a breeze...

- P23518LFVP

Excellent service and great products

- P23518LFVP

Great updates and fasr shipping, Better than Amazon and they are good

- P23518LFVP

It’s exactly what I was looking for I can’t try it until I close

- P23518LFVP

Product was exactly as described. Fast transaction and shipping!

- P23518LFVP

- P23518LFVP

- P23518LFVP

- P23518LFVP

Worked great....

- P23518LFVP

- P23518LFVP


Ask the Experts about this Valterra RV Fresh Water

  • Do Have An Air Compressor Recommendation For Winterizing My Trailer And Airing Up My Tires
    We do have plenty of air compressors available on our website, but none of them are 12V and 120V compatible. My 12V air compressor recommendation is the Bulldog Winch Portable Air Compressor - 100 psi - 1.2 cfm Maximum Air Flow, part # BDW41001. It is a heavy-duty air compressor that just happens to be portable. You can use it for items up to 100 psi. I did not recommend a 120V model because we do not have a portable 120V option, but if you are interested in 120V options please let me know....
    view full answer...

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Info for this part was:

Employee Andrew K
Installed by:
Andrew K
Employee Amy B
Written by:
Amy B
Employee Chris R
Video Edited:
Chris R
Employee Mary E
Updated by:
Mary E
Employee Alexander C
Updated by:
Alexander C
Employee Aidan B
Video by:
Aidan B

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