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Replacement Plastic Check Valve for B&B Molders City Water Inlet - Polar White
(79 reviews)
Price: $20.62
In Stock
B and B Molders
Replacement Plastic Check Valve for B&B Molders City Water Inlet - Polar White
Part Number: BM58GR
In Stock
$20.62
Retail:$26.87
You Save: 23%
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- Reviews (79)
- Q & A (0)
- Videos (1)
- Photos
B and B Molders Accessories and Parts - BM58GR
- RV Water Inlets
- Check Valve
- B and B Molders
- White
Replaces a plastic check valve assembly on any B&B Molders city water inlet. Designed for gravity fill tanks, flushing your tanks, or when winterizing. Inlet valve has 1/2" MPT fitting. Includes easy grip collar and cover plug.
Features:
- Replaces plastic check valve on B&B RV city water fills
- Designed for gravity fill tanks, flushing your tanks, or when winterizing
- Polar white color
Fits:
- All B&B city fill water inlets
725-006-00005 B and B Molders Replacement Plastic Check Valve - Polar White - 94210
Video of Replacement Plastic Check Valve for B&B Molders City Water Inlet - Polar White
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Video Transcript for Replacement Plastic Check Valve for B and B Molders City Water Inlet: The Breakdown
Hi, everybody. Andy here with etrailer.com. Let's take a real quick look at this B&B replacement white plastic check valve. Now, this is going to replace the plastic check valve on your B&B RV city water fills. And this is going to fit all B&B city fill water inlets. And this is going to prevent water backflow in pressurized water systems.
And this is going to work with your standard equipment city fill equipped water dishes, plates, and hatches. This is made of UV stabilized plastic, so this is gonna hold up really well to the elements that it's gonna be exposed to. You're not gonna have to worry about this yellowing. It includes the plug there to keep that inlet free from debris, does have that screen there as well, grip knob. So this is the direct replacement from B&B, so what that means for you is you can trust that this is going to fit right in place of that original.
You're not gonna have to worry about compatibility or fitment issues. It'll fit right into place of that original. 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.
.
Customer Satisfaction Score:
99% were satisfied with this product
1% of customers were not satisfied
Ratings & Reviews
4.9
79 reviews
by:
Jeffrey
08/10/2026
This was a perfect fit for my Nautilus System in my RV. I decided to order two check valves just so I’ll have a spare. Fast shipping too.
by:
Jodie
10/24/2026
Just a plastic piece of junk. The back clip wouldn't slide back in so we're doing without
by:
John
10/14/2026
this is a good product, it would have been a little more helpfull if there were instructions for how the clip on the rear goes into the back to keep it secure. I fugured it out but instructions are alway helpfull.
by:
Tim
06/10/2026
Exact replacement part for my 5th wheel camper water supply connection. Fast delivery and easy install
by:
Paula
07/20/2026
Exact replacement. Fairly easy install.
by:
John
10/14/2026
Product fit. Maybe more clarity about the plastic clip. Pther than that no issues at all
by:
Dave
11/03/2026
Perfect it what I need
by:
George
11/08/2026
What I needed. Worked well.
by:
Jamie
05/06/2026
Great replacement part for a leaking valve, like for like part on 20’ grand design 312bhts
by:
Dale
10/10/2026
It was very good process. It delivered on time no issues
by:
Gregory
08/24/2026
Perfect fit and function!
by:
James
08/19/2026
Perfect matching part as always when anything ordered on here!
by:
Igal
07/14/2026
great same part arrive fast and in great shape!
by:
Daniel E
11/18/2025
Part fit perfectly thanks for the great price and fast shipping.
by:
Mark
06/10/2026
Looks like it will work, thanks!
by:
Marc
06/04/2026
Just like OEM! Thanks!
by:
Gary
04/02/2026
Worked Great Exact Match
by:
RP
10/08/2025
Awesome customer service with clear and timely communication.
by:
Monroe
04/28/2026
Perfect fit.
by:
David
12/19/2025
He helped me get the right part less than $[XX] and we are good to go. Thanks
by:
Elio
06/30/2025
Excellent replacement part. Took out the old broken one and this one fit right in.
by:
Celi
12/11/2025
good job guys
by:
Michael
10/19/2025
Easy install and no leaks now
by:
Steven
11/06/2025
Perfect fit.
by:
Jeff
08/23/2025
Worked perfectly
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See what our Experts say about this B and B Molders Accessories and Parts
- Why Won’t My Nautilus P2.5 Draw Antifreeze When Winterizing?Hello Eric, Welcome to etrailer, I'm glad you found us! Yes, what you are describing makes sense. On the Nautilus P2.5, flipping the cone-shaped inlet screen allows it to press the little stem on the check valve open so the pump can draw antifreeze or sanitizing solution. Since that stem isn't showing on yours like it does on the Replacement Plastic Check Valve # BM58GR, it may be missing or damaged. Before replacing it, though, I would like to make sure you have the same style. Please...
view full answer... - Is there a Replacement Plastic Check Valve for the B&B Nautilus Control Panel?Hey Kyle, welcome back! The Replacement Plastic Check Valve for B&B Molders City Water Inlet item # BM58GR is going to be the correct one. There is no brass check valve city water inlet designed for a B&B Nautilus Control Panel like item # BM54GR.
view full answer... - What is the Difference Between # BM58GR and # BM46MR?Hello Chris, Great question! To be honest, I could not find anything that was listed different so I reached out the manufacturer to get the answer. The difference between the two is one has a check valve and the other is just a pass through. The # BM58GR is WITHOUT the check valve inside the housing. It’s just a pass through without the check valve, nothing is there to prevent the backflow of water. Usually used in a Gravity tank fill, tank flush, or winterizing situation. The #...
view full answer... - What is the Replacement Check Valve for Black Tank Water Connection?Thanks for reaching out Igor, Yes, the Replacement Plastic Check Valve for B&B Molders City Water Inlet # BM58GR appears to be the replacement for the white black tank connection in your photo. To be completely certain, I recommend removing the existing fitting and comparing the rear connection style 1/2" MPT or checking for a B&B part number molded into the back of the fitting. If your current valve is B&B molders or has a 1/2" MPT connection, this part will work. Do you usually camp...
view full answer... - Recommended B&B RV Water Center w/a Plastic Check ValveWelcome 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...
Do you have a question about this Accessories and Part?
Info for this part was:
Updated by:
Wilson B
Edited by:
Amanda M
Installed by:
Andy C
Written by:
Cody B
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