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Valterra Check Valve for RV Fresh Water Systems - Dual 1/2" MPT - Brass
(136 reviews)
Price: $15.82
In Stock
Valterra
Valterra Check Valve for RV Fresh Water Systems - Dual 1/2" MPT - Brass
Part Number: P23415LFVP
In Stock
$15.82
Retail:$23.22
You Save: 32%
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- Reviews (136)
- Q & A (0)
- Videos (1)
- Photos
Valterra RV Fresh Water - P23415LFVP
- Prevent Backflow
- Valves
- Water Heater Check Valve
- Threaded
- 1/2 Inch
- Valterra
- Brass
If your city water connection is causing your fresh-water tank to overflow, get a new check valve. Install this check valve to stop water from backing up and keep it flowing in the right direction.
Features:
- Check valve lets water flow in only one direction
- Used to prevent city water connection from filling and overflowing your fresh-water tank
- Also prevents water from backflowing out of your hot water heater
- Brass construction is lead-free and safe to use
- Fitting size: 1/2" MPT x 1/2" MPT
- 1-Year warranty
P23415LFVP Valterra Check Valve for Freshwater Systems - 0.5" Diameter - MPT to MPT - Lead-Free Brass
Video of Valterra Check Valve for RV Fresh Water Systems - Dual 1/2" MPT - Brass
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Video Transcript for Breaking Down the Valterra Check Valve for RV Fresh Water Systems
Hello, everybody. This is Jeff at etrailer.com. Today, we're gonna take a look at the Valterra Lead-Free Brass Check Valve for your RV Fresh Water Systems. Has a half inch male pipe thread on one end, and a half inch male pipe thread on the other end. Now basically, if your city water connection is causing your fresh water tank to overflow, then you do want to get a new check valve. Basically, you'll install this check valve to stop the water from backing up and keep it flowing in the right direction.
And when you do install this, if you look closely, I'm gonna sort of point it out, you should be able to see it right there. It has an arrow pointing that's telling you the water flow goes that way. Because you can see, here's your check valve. If you push that, the pressure will push that to open it. You can see on this end how, when I push it, it opens.
This will also prevent water from backflowing out of your hot water heater. This is a brass, and it is a lead-free brass construction. It is safe to use. And again, the fitting size to go over again. Half inch male pipe thread on this end, half inch male pipe thread on this end.
But that should do it for the review on the Valterra Lead-Free Brass Check Valve for your RV Fresh Water System.
Customer Satisfaction Score:
99% were satisfied with this product
1% of customers were not satisfied
- Wrong item was ordered
- Did not arrive in time
Ratings & Reviews
4.8
136 reviews
by:
Chris
12/01/2025
Perfect fit for my Suburban SW10DEL hot water heater. This one seems quality built so we will see if it last longer than the OEM.
by:
Dennis
10/09/2025
I will install this with my RV water heater along with pex tubing and threaded connectors, which I am confident will prevent water leaks during my travels.
by:
Alan
12/02/2016
Item: P23415LFVP: This item is better than the OEM that came with the 5th wheel camper, the stock part only has two star contacted points inside the check valve and the new one from etrailer has three star contacted points.
Etrailer.com has the Best online price: better than PPL, camping world, adventurerv .net, tweetys.com.
Thanks
Etrailer.com has the Best online price: better than PPL, camping world, adventurerv .net, tweetys.com.
Thanks
by:
Jason
12/13/2025
This part hasn't been installed very long, but so far so good. The quality looks very good and i expect it to work well for years to come.
by:
Robert
08/31/2023
Exactly the part I needed to complete new water heater install,and as usual,etrailer came thru with having part in stock and quick shipiing.
Robert
9/1/2024
Still doing its job perfectly!
by:
Pokey
11/04/2025
Installed with no issues and seems to be of good quality.
by:
Richard T.
07/15/2018
I had a problem finding these check valves for my RV water heater locally. I found them online through Etrailer.com ordering was easy, the check valves were what they said they would be. Great Job, Thank you.
by:
Ben W.
05/13/2017
Perfect replacement for RV G-784 MBC valve for my 10 gal. Atwood water heater! The length of valve was not on website but Gwendolyn Y. at etrailer contacted the manufacturer and returned my call in a timely fashion with the information I needed.
I have ordered from etrailer several times now and have always received great assistance from their associates.
I have ordered from etrailer several times now and have always received great assistance from their associates.
by:
Thomas
06/29/2019
Was exact replacement for my Atwood water heater. No more back filling the heater with anti-freeze when winterizing. Easy install
by:
Joseph
09/10/2025
This part is what I needed. High quality.
by:
george s
02/24/2017
These check valves were an exact match to the original and were shipped quickly. This was my 1st order with etrailer and I will be ordering from them again.
by:
Patty
10/14/2025
Worked great.
by:
Marvin m
02/15/2017
I found this item online using a search engine. I placed my order
and quickly received confirmation and shipping verification.
Very good people to deal with. MarvinM
and quickly received confirmation and shipping verification.
Very good people to deal with. MarvinM
by:
Steve
07/30/2025
A little shorter than my original valve, but $2 part from Lowes’s fixed that!!
by:
Jeffrey
08/31/2020
fit perfectly to replace the bad check valve I had on my rv water heater. arrived ahead of time. good company to work with
by:
Greg
04/17/2018
Well made Brass fitting..Simple mechanics and virtually trouble free design.
This product is being used as a check valve for a water heater in our Motor home. The original part was clogged with mineral deposits. We replaced the original with this one. Over time any part that is in contact with flowing water will build up mineral deposits and cause a check valve like these to get clogged up and not allow water to flow through properly. It is a part of your maintenance program to change these every 5 years or so depending on your water. It is very easy to change this out with a new one. This is a great value and a good idea to have a spare one handy. It works perfectly..
This product is being used as a check valve for a water heater in our Motor home. The original part was clogged with mineral deposits. We replaced the original with this one. Over time any part that is in contact with flowing water will build up mineral deposits and cause a check valve like these to get clogged up and not allow water to flow through properly. It is a part of your maintenance program to change these every 5 years or so depending on your water. It is very easy to change this out with a new one. This is a great value and a good idea to have a spare one handy. It works perfectly..
by:
CRAIG
11/13/2016
Ordering process was straightforward and could track the part until recently. Always very pleased with the selection, quality, and service provided. This check valve installed easily and performs flawlessly in my motorhome.
by:
Andrew
04/11/2018
I just bought a new water heater for my 28' Sea Ray boat and I needed this exact part to complete the job. The website is easy to search and the price is fair, most importantly the exact part I ordered arrived on time and in perfect condition!
by:
Steven
10/25/2019
Works as designed. Quick & free shipping. Great deal.
by:
Phil
09/06/2016
Was a perfect replacement part for the water heater in my camper.
by:
Roland
10/17/2020
always super fast shipping when you need it. Best price all the time. Have been buying from you for many years. Thank you
by:
Steve M.
10/10/2016
Exactly what I was looking for. Used it on a sewer tank sprayer hose line.
by:
Mort
08/07/2017
Fast shipping as usual - product is just as described
by:
Paul
11/25/2017
Fast shipping, great price, just the part I needed. Thank You!
by:
Dale
03/14/2020
Replaced the one that was installed from the factory Incorrect and cracked. This product was installed correct and has preformed as designed. No issues after one year.
Dale
3/16/2021
Working great, replaced a product that was used when my RV was manufactured. Holds the pressures without leaking or cracking.
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Show More Reviews
See what our Experts say about this Valterra RV Fresh Water
- Check Valve Needed for 10 Gallon Atwood Water HeaterWe do have some check valves available from Valterra and Camco, both of which are big in the RV plumbing industry and have great reputations. The 2 most popular check valves that we have are parts # P23415LFVP, which has 1/2" MPT x MPT fittings, and # P23402LFVP, which has 1/2" MPT x FPT fittings. I have also linked our selection of check valves for you to filter through.
view full answer... - Why Would RV Overflow Valve Overflow When being Filled with City WaterHey Mike, this means a check valve has failed. We have that with the part # P23415LFVP which you need to replace on your setup and this issue will stop.
view full answer... - Replacement Fresh Water Check Valve Options For A 2021 Grand Design Reflection Fresh water check valves are typically 1/2" NPT fittings, but I wouldn't know if you'd need a female or male connector without actually taking your city water inlet apart. If you remove your city water inlet from the wall of the trailer you should be able to see what style is needed. For a male to male fitting you can use part # P23415LFVP and for a female to male fitting you can use part # 37262195
view full answer... - Check Valve Replacement For A Fresh Water Spray Port The RV Check Valve for Fresh Water Systems - 1/2" MPT x 1/2" FPT - Brass Item # 37262195 will work as long as the hose and spray port are 1/2" and the spray port has a male fitting. If the spray has a female fitting then I recommend the Valterra Check Valve for RV Fresh Water Systems - Dual 1/2" MPT - Brass Item # P23415LFVP.
view full answer... - Replacement Check Valve for When Replacing Dometic Water HeaterYou'll want to replace the check valve with the part # P23415LFVP if the internal components of what you have now are coming out.
view full answer... - How to Install a Fresh Water Back Flow Preventer on a RV Water HeaterThe Valterra 1/2" check valve # P23415LFVP fresh water backflow preventer has an arrow stamped between the threading and the nut. It can be difficult to see, if you don't look closely. You should install the backflow preventer with the arrow pointing in the same direction as the water flow. I have attached a photo that clearly shows the correction direction.
view full answer...
- Where to Install a Valterra Check Valve for RV Fresh Water Systems on a RV Water HeaterYou should only need the Valterra Check Valve for RV Fresh Water Systems # P23415LFVP at the cold inlet of your water heater. Typically you will have a total of three fresh water check valves; one at the cold inlet to the water heater, one at the city water inlet and one located at the outlet of the water pump.
view full answer... - How To Stop Fresh Water Tank In RV From LeakingThe water leaking is normal its your overflow which means that your fresh tank is now full. If you install a valve on the overflow then it needs to be open when filling and when using or else the tank could explode. It could also be that your check valve went bad. The Valterra Check Valve for RV Fresh Water Systems # P23415LFVP has dual 1/2 inch MPT. The Valterra Check Valve for RV Fresh Water Systems # P23402LFVP has a 1/2 inch MPT x 1/2 inch FPT.
view full answer... - 2018 Highland Ridge RV With City Water Filling Fresh Water TankA backflow preventer like the Camco RV Fresh Water System Backflow Preventer - 1/2" Diameter - Brass # CAM23303. will allow water to flow only in one direction so that your fresh water tank doesn't fill up from water backfilling into it from your city water connection. If your connection requires a double male pipe thread connector then # P23415LFVP will be a good option. Included is a video overview with additional information.
view full answer... - Tip for Removing Difficult Valterra Check Valve # P23415LFVPBrass fittings like the # P23415LFVP can be difficult to remove. Especially if there was thread locker or thread tape used. It's hard to say how much force you'd need but you might try heating up the fitting to release any thread locker.
view full answer... - Installing the Valterra Check Valve for RV Fresh Water SystemsThe Valterra Check Valve for RV Fresh Water Systems, # P23415LFVP has the 1/2" MPT or Male Pipe Thread, there is no O-ring needed. I suggest using the Valterra PTFE Thread Seal Tape - 1/2" Wide x 520" Long Item # A05-0265.
view full answer... - Recommended Check Valve Backflow Preventer to Keep City Water Connection From Filling Water TankIt sounds like your system needs a backflow preventer like the Camco RV Fresh Water System Backflow Preventer - 1/2" Diameter - Brass # CAM23303. This allows water to flow only in one direction so that your fresh water tank doesn't fill up from water backfilling into it from your city water connection. If your connection requires a double male pipe thread connector then # P23415LFVP will serve you well.
view full answer... - Troubleshooting Water Problems at the Check ValveCheck valves can fail due to ice in the winter or debris in warmer months, or simple wear at any time. I think if it were me I would try to warm the check valve with a heat source like a heat gun, being careful not to melt the plastic around it. At the outdoor connection to the check valve I would remove the rubber o-ring with the screen in it. It just pulls out. Then, looking in there you will see a stem sticking up in the middle. you should be able to push this stem in about 1/4". It...
view full answer... - What Is The Difference Between A Check Valve And By-Pass KitAntifreeze leaking into the water heater could be remotely caused by a bad check valve, however, this would all depend on the location of the check valve. Generally speaking, there are only 2 check valves installed in the plumbing system for an RV. There is one coming from the city water inlet and one on the fresh water tank. A check valve such as the Valterra Check Valve part # P23415LFVP is designed to prevent water from backfeeding into your freshwater tank or city water connection and...
view full answer... - Can Brass Check Valves Be Used in Place of Plastic Ones in CampersYes of course. The Valterra Check Valve for RV Fresh Water Systems part # P23415LFVP is a pretty common upgrade when it comes to RVs. Typically they use lower end components and cracking on these can be common issues. This has the 1/2" MPT or Male Pipe Thread to help you match up what you've got now.
view full answer... - Recommended Male To Male Brass Check Valve I went ahead and checked to see what we have, and the closet option I could find to what you're needing is the: -Valterra Check Valve for RV Fresh Water Systems # P23415LFVP. This is a brass check valve that features dual 1/2" MPT ends. The only 3/4" check valve that we have is the Camco RV Fresh Water System Backflow Preventer # CAM23402 that you checked out, which has 1" MPT x 1" FPT connections.
view full answer... - Check Valve for Water Heater with 1/2 Inch Male MPT FittingsThe best option we have for you is to use the Valterra Check Valve part # P23415LFVP and then go to a local hardware store to look for a 1/2" to 5/8" adapter as we do not carry a check valve with both 1/2" MPT and 5/8" MPT fittings. These are pretty common through so I don't think you will have any issue finding one. In order to join the fittings together you will also want to use the Valterra PTFE Thread Seal Tape part # A05-0265.
view full answer...
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Info for this part was:
Installed by:
Jeff D
Expert Research:
Jameson C
Written by:
Amy B
Updated by:
Mary K
Updated by:
Alexander C
Updated by:
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Alan
12/6/2017
Great! I have recommended this item any times. Thanks, etrailer.com