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  1. RV Water Inlets
  2. B and B Molders
  3. City Water Inlet
  4. Dual Water Inlet
  5. Gravity Fill Inlet
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B&B RV Water Center - City Water and Gravity Fill - Plastic Check Valve - Key Lock - Polar White
B and B Molders

B&B RV Water Center - City Water and Gravity Fill - Plastic Check Valve - Key Lock - Polar White

Part Number: BM26MR
In Stock
$46.54
RV Water Inlets
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Update your RV's fresh-water access with this dual-fill secure hatch. Includes a gravity port to fill your fresh-water tank and a threaded plastic check valve for pressurized city water. Vent allows air into your tank so water flows smoothly. Great Prices for the best rv water inlets from B and B Molders. B&B RV Water Center - City Water and Gravity Fill - Plastic Check Valve - Key Lock - Polar White part number BM26MR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (63)
  • Q & A (0)
  • Videos (1)
  • Photos

B and B Molders RV Water Inlets - BM26MR

  • City Water Inlet
  • Dual Water Inlet
  • Gravity Fill Inlet
  • White
  • Flush Mount
  • 7-5/8W x 6-1/2T Inch Flange
  • Plastic
  • B and B Molders
  • Plastic
  • 1-1/2 Inch Deep
  • 5-7/8W x 4-7/8T Inch Cutout

Update your RV's fresh-water access with this dual-fill secure hatch. Includes a gravity port to fill your fresh-water tank and a threaded plastic check valve for pressurized city water. Vent allows air into your tank so water flows smoothly.


Features:

  • Dual water hatch provides a gravity fill port and a city water inlet on your RV
  • Gravity fill opening and spout lets you fill your fresh-water tank
    • Uses barbed connection inside for 1-3/8" or 1-1/4" hose to tank
    • Twist-on cap holds fast to keep fill clean and prevent loss
  • City water inlet connects to a drinking water hose for a pressurized connection at home or at park
    • Plastic check valve keeps pressurized water from backflowing
    • 1/2" MPT fitting inside connects to RV system
    • Rubber plug fits tight
  • Air vent attaches 3/8" tubing (not included) to tank, balances air pressure for smooth water flow
  • NSF, IAPMO , and CSA
  • Includes mounting hardware, lock, and key
  • Made in the USA


Specs:

  • Cutout dimensions: 4-7/8" tall x 5-7/8" wide
  • Outside dimension: 6-1/2" tall x 7-5/8" wide
  • Collar Depth: 1-1/2"
  • 1-Year warranty


723-037-00062 B and B Molders City-Gravity Water Center w/ Plastic Check Valve, Key Lock- Polar White - 94254





Video of B&B RV Water Center - City Water and Gravity Fill - Plastic Check Valve - Key Lock - Polar White
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for What to Know About the B and B RV Water Center

Hello neighbors, Steve here with etrailer.com. Today we're looking at our B&B RV Water Center city water, and the gravity fill option as well. Has a built-in plastic check valve and it's a lockable with key polar white color. So folks, with this dual water hatch, you're gonna be able to provide both a gravity fill port and a city water hookup inlet on your RV or camper. Now, the gravity fill opening and the spout will let you fill your fresh water tank, and it's gonna use a barbed connection on the back. It has both a 1 1/4 inch or 1 3/4 inch barbed fitting, depending on your needs.

Now, the hookup back here is a 1/2 inch MPT, or metal pipe thread fitting, to connect inside the RV system. They both have twist on caps to keep everything nice and secure. And this one even has the built-in screen filter as well. Now, inside of this one here is a built-in plastic check valve. That's gonna keep water from only going one way and keep everything pressurized from back flowing.

Now, it is a nice fit into the hatch itself. You also have a push and remove, or push out of the way, rather. That way when you got your hose hooked up here, you can easily see it and have the hose sticking out. And like I said, this is lockable. It does come with one included key.

Simply lock it or unlock it for when you need to open it. So very simple construction. It does also include all the mounting screws to mount it. You're gonna get all these. They're all painted white already.

And they also give you a nice roll of butyl tape. Now if you've never used this or you're not familiar, butyl tape is like a putty. It's sticky, but weather and waterproof. So you'll make your cutout if you don't already have one, and you'll put the butyl tape all around on the flat surface. Then you'll come from the other side, install it, putting all the screws in place, and going through the butyl tape with the screws, creating a watertight connection. As far as some dimensions, the cutout is 5 7/8 long by 4 7/8 inches high. And as far as the outside, overall it's 7 5/8 inches long by 6 1/2 inches tall. The depth here on the collar itself is 1 1/2 inches deep. Folks, it is made here in the US, has a nice one year warranty, and it's been NSF, CSA, TEI, and IAPMO certified. Now, one last thing to mention before we finish here, you can kind of see in here, you've got those little holes in the dash, whatever you wanna call the holes. That is your air vent. So it does require a 3/8 inch tubing that's not included to your tank, and that's gonna balance the air pressure for much smoother and consistent water flow. Well folks, again, I'm Steven. Thanks so much for looking at this Water Center city water and gravity fill connection. I'm Steven, have a great one.

Customer Satisfaction Score:

Ratings & Reviews

4.7

63 reviews
5 Stars
(51)
4 Stars
(8)
3 Stars
(2)
2 Stars
(0)
1 Star
(2)
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by:
I was disappointed with this one. Despite use of Teflon tape on the threaded connections the one that I received leaked like a sieve. I ordered another similar replacement from etrailer, B & B Moulders Model BM83RR which has brass instead of plastic threads.
by:
I ordered as a replacement part for my 1999 Jayco 5th wheel. Fit perfectly and very pleased with the results!
by:
Overall nice product. Minor grumbles include: only one key, the latch could be improved (it’s a bit tight latching) and lastly, they place a gooey sticker on the door promoting the ability to key alike. I peeled it off the pebble finish and it left a gooey mess. Ugh.


Etrailer- first rate. Five stars…..
by:
Easy to find, Easy to order and Easy to install..
by:
I am as happy as a clam at high tide with this RV water center. I dry fit it and the fit was perfect. Now I can once again take showers in the desert in Quartzsite Az.
by:
by:
by:
by:
Excellent.
Perfect exact replacement,
But with a couple upgrades.
Simple install.
Took a little over 30 minutes.
Could not be happier.
Etrailer you rock. !
Will be back for all my trailer part needs.
Claire H. profile picture
Etrailer Expert

Claire H.

6/10/2026

Thank you for the kind words! We're happy to assist you with any of your trailer needs in the future :)

by:
Looks to be a direct replacement for current unit. Good kit that comes with all parts needed to install. Excellent tracking on order and communication on short back-order delay. Thanks
by:
so far so good, the valve was installed and has worked as expected, it was the most optioned and expensive available with 3 different valves/uses and a locking exterior door and has worked as advertised.
by:
It looks perfect it was difficult to find as the product is referred to as several names. Connections box water box ect. This is what I was looking for and it arrived really fast. I wish the trailer company here had told me that I could simply replace the guts and not spend $275 for the entire unit thats on me but telling me 8 weeks from products ordered out of the states is BS. etrailer has been great it arrived within the week across the boarder with no issues.
Thanks
by:
Thank you for having the part we needed at a fair price and fast shipping, this was not a common part and had variances in different models, you had the exact one we needed. thanks again
by:
I'm not impressed without the to just replace the check valve only. For reasons of needing the trailer up and running ASAP, I bought the poor designed product. I will be modifying my old one to be able to repair easily and be a sustainable product, instead of the wasteful use that ends up in a landfill.
by:
Exact replacement needed for my customers RV. Quality was great and came fast! It does not come with a lock and key like the one previously installed but was able to swap the doors from the old one. Also comes with a small amount of butyl tape.
by:
Have always been very helpful and products have been reliable.
by:
We appreciate etrailer having what we needed to fix a camper. we were working on. Look forward to doing more business with you in the future recommend etrailer to anyone that would need an RV part. Thank you.
by:
Exact fit for a hard to find part.
by:
Much better than the original that came on my trailer. It was an exact fit to the opening with even the screw holes aligning. And most importantly it has been 100% leak free with daily use over the past couple of weeks. It’s a solid replacement product.
by:
Exact replacement for my camplite travel trailer.
by:
Dwight isvinstalling it today a perfect match!
by:
I wish the manufacturer used metal hose connectors instead of plastic
by:
Recived the Item #BM58MR quickly, estimate was a Friday about a week. I recieved it three days after ordering. The description and measurements given matched exactly. Came with all items necessary to install. Installation took about thirty minutes (your mileage may vary) i work slowly. Quality of the materials that the part is made of appear of good to excellent quality. Overall it was fantastic to find your company carried the product, and it was made of good materials. I will be looking to etrailer for any rv parts i may need. Thanks for reading this review, your looking in the right place.
by:
HIGHLY RECOMEND ETRAILER, FAST AND GREAT SERVICE
by:
Fast Shipping. Thank You!
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See what our Experts say about this B and B Molders RV Water Inlets

  • Recommended B&B RV Water Center w/a Plastic Check Valve
    Welcome back Kurt! The B&B RV Water Center item # BM26MR would be the same size as the B&B RV Water Center BM78MR you currently have. It would be a pretty quick replacement because the mounting holes and thread sizes are all the same. The Replacement Plastic Check Valve item # BM58GR is the correct replacement for the B&B RV Water Center item # BM26MR. In the event of a failure you would have to unscrew the Water Center item # BM26MR to install the Replacement Plastic Check Valve item...
    view full answer...

Info for this part was:

Employee Steven C
Installed by:
Steven C
Employee Wilson B
Updated by:
Wilson B
Employee Michael B
Updated by:
Michael B
Employee Amanda M
Edited by:
Amanda M
Employee Cody B
Written by:
Cody B

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