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B&B RV City Water Hatch 4-3/4" x 4-1/4" - Plastic Check Valve - Key Lock - Polar White
B and B Molders

B&B RV City Water Hatch 4-3/4" x 4-1/4" - Plastic Check Valve - Key Lock - Polar White

Part Number: BM68MR
$56.23
RV Water Inlets
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Refresh your RV's city water inlet with this secure hatch. The plastic check valve inlet has a 1/2" MPT inside water connection. Easily accepts city water pressure to fill your water system. Removable screen filter. Great Prices for the best rv water inlets from B and B Molders. B&B RV City Water Hatch 4-3/4" x 4-1/4" - Plastic Check Valve - Key Lock - Polar White part number BM68MR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (5)
  • Q & A (0)
  • Videos (1)
  • Photos

B and B Molders RV Water Inlets - BM68MR

  • City Water Inlet
  • White
  • Flush Mount
  • 6W x 6-1/2T Inch Flange
  • Plastic
  • B and B Molders
  • Plastic
  • 3 Inch Deep
  • 4-1/4W x 4-3/4T Inch Cutout

Refresh your RV's city water inlet with this secure hatch. The plastic check valve inlet has a 1/2" MPT inside water connection. Easily accepts city water pressure to fill your water system. Removable screen filter.


Features:

  • RV hatch for city water fill with check valve replaces a worn or damaged unit
    • Plastic check valve prevents backflow into the city system when under pressure
    • Inlet valve won't rust or contaminate incoming water
    • Removable screen filter is easy to clean and replace
  • Tethered plug protects the fill point when not in use
  • Locking hatch also provides access door for hose
  • UV-stabilized plastic won't fade, resists impact and salt
  • Includes mounting hardware, lock, and key
  • NSF, IAPMO, and CSA certified
  • Made in the USA


Specs:

  • Inside water connection: 1/2" MPT
  • Cutout dimensions: 4-3/4" tall x 4-1/4" wide
  • Outside dimension: 6-1/2" tall x 6" wide
  • Collar Depth: 1-1/2"
  • Total depth: 3"
  • 1-Year warranty


723-037-00070 B and B Molders City Water Hatch w/ Plastic Check Valve - Key - Polar White - 94226





Video of B&B RV City Water Hatch 4-3/4" x 4-1/4" - 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 B and B RV City Water Hatch 4-3/4" x 4-1/4" Review

Hi, everybody. Andy here with etrailer.com. Let's take a look at this BMB Polar White RV City Water Hatch. This RV hatch for city water fill with check valve is going to replace a worn or damaged unit. And let me go ahead and give you some overall measurements right up front so you can be confident this is going to work for you. So looking at the overall width, as you can see we are sitting right at about six inches wide.

Overall height from bottom to top, about 6 1/2 inches tall. And then looking at that cutout dimension, looking at the width first, we're sitting right at about 4 1/4 inches wide. And then on the height about 4 3/4 inches tall. Lemme go ahead and try to give you that collar depth as well. We're sitting right at about inch and a half.

The total depth when you include that spout there is going to be right at three inches. And then that inside water connection is 1/2 inch MPT. So the check valve is going to prevent backflow into the city system when under pressure, and this is not going to. You're not gonna have to worry about any of this rusting or anything like that. This does have a removable screen filter, so that's gonna be very easy to clean and replace.

The grip collar is going to let you easily attach and detach your hose and this tethered plug is going to protect that fill point when it's not in use. Pop it back into place like that. And then this locking door is going to give you security. This also, if you probably already noticed, has a hatch that's going to give you an access door for a hose while this is locked. So that's a addition this has here.

And then this does include the key to lock this just like that, so it's secure. And then the plastic itself is very durable. It's UV-stabilized plastic, so you're not gonna have to worry about this yellowing or discoloring or anything like that. It's also resistant to salt and impacts. So very durable. (device clacking) It is made here in the USA. It's NSF, IAPMO, CSA and TEI certified. And it includes everything that you see here on my table before me. Well, that's gonna wrap up our real quick look today. I do hope that it was helpful for you. Again, my name is Andy. Thank you for joining me.

Ratings & Reviews

4.0

5 reviews
Review sort icon
Refresh your RV's city water inlet with this secure hatch. The plastic check valve inlet has a 1/2" MPT inside water connection. Easily accepts city water pressure to fill your water system. Removable screen filter.

by:



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by:

Il semble qu’il soit la bonne pièce je ne l’ai pas installé encore



by:

Happy with the quality of the part. Unhappy that the part did not show up with a key, the mounting screws or the sealing tape shown in the description and product video.

Mike L. profile picture
Etrailer Expert

Mike L.

12/20/2025

I'm sorry that happened Robert. I'll get that taken care of for you...

Robert W. profile picture

Robert W.

12/21/2025

Mike, thank you for your prompt reply. Very much appreciate your quality customer service.


by:

It was exactly what was needed. The only glitch was that the lock and latch connection is very tight and I need to push and wiggle a lot to get it unlocked. We have to sand the plastic part down with a dremel.


5
5

See what our Experts say about this B and B Molders RV Water Inlets

  • Replacement City Water Inlet For My 27 Foot Camper
    Hey, Steve. If you're connecting your water hose to it it sounds like your city water inlet. We do carry a variety of options depending on what yours looks like and color. You can reply to the email with pictures of what yours looks like I can get a better idea of which one will work for you. I'll link some examples below for you to look at. B&B RV City Water Inlet black - part # BM48RR B&B RV City Water Inlet - white - part # BM28RR B&B RV City Water Hatch - part # BM68MR
    view full answer...
  • Does B and B City Water Hatch part # BM68MR Use Garden Hose Fitting
    Hey Dasiya, yes the B and B City Water Hatch part # BM68MR that you referenced does use the standard 3/4 inch garden hose fitting size so a garden hose could thread to it. Were you planning on hooking up a garden hose to it to fill your tanks?
    view full answer...

Do you have a question about this RV Water Inlet?


Info for this part was:

Employee Jameson C
Expert Research:
Jameson C
Employee Wilson B
Updated by:
Wilson B
Employee Amanda M
Edited by:
Amanda M
Employee Andy C
Installed by:
Andy C
Employee Cody B
Written by:
Cody B

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