City water going into fresh water tank no matter where the wet bay valve is set to on 2017 big horn 3160el

[scottknight1]

Last two days for first time - with city water press on the water is overflowing the fresh water tank.

No matter where I set the valve - city or normal - it over flows

Can it be the valve in the wet bay or the water pump?

Any advice would be appreciated.

Thx

 

[chaplady]

Possibile its the checkvalve in water pump. You can purchase a checkvalve the scews on between pump discharge and discharge hose. Had same issue that what and how i resolved the issue

 

[travelin2]

Likely the water pumps internal check has failed
Buy one like this

https://www.amazon.com/Hooshing-Brass-Female-Thread-Return/dp/B08DQRG9X6/ref=sxin_20_pa_sp_phone_search_thematic_sspa?content-id=amzn1.sym.f3a493be-70c5-429a-afff-ea7f0ac2f681%3Aamzn1.sym.f3a493be-70c5-429a-afff-ea7f0ac2f681&crid=2UMBO7IL3KBCC&cv_ct_cx=1%2F2%22+check+valve&keywords=1%2F2%22+check+valve&pd_rd_i=B08DQRG9X6&pd_rd_r=0d68b220-356b-4889-a0f5-d4a948a61146&pd_rd_w=tSxzD&pd_rd_wg=REhoH&pf_rd_p=f3a493be-70c5-429a-afff-ea7f0ac2f681&pf_rd_r=R19TVX95REA8A6RV9NMK&qid=1675552922&sprefix=1%2F2+check+valve%2Caps%2C160&sr=1-2-a73d1c8c-2fd2-4f19-aa41-2df022bcb241-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEyOFY0OFk1TEU1TTAmZW5jcnlwdGVkSWQ9QTA4NDcwNzM5M1g1MkxMRFAxMjUmZW5jcnlwdGVkQWRJZD1BMDg3MTgxMDFBNTRYOEJUMEwzQ0Emd2lkZ2V0TmFtZT1zcF9waG9uZV9zZWFyY2hfdGhlbWF0aWMmYWN0aW9uPWNsaWNrUmVkaXJlY3QmZG9Ob3RMb2dDbGljaz10cnVl

 

[DickO]

When mine did that I found that when turning the Anderson valve to city, go past city and then turn back. Works without spending money.

 

[scottknight1]

ok. Will try it.
Does it matter if I’m turning it clockwise to get to city and go beyond ? Or counter clockwise.

In the past I just turned the arrow to city or tank or normal.
I never went 360 degrees in with direction. So maybe only going from 600 to 1200 o clock had caused this problem.

 

[CoveredWagon]

You can install a check valve on either side of the water pump.
It. could be the Andersen valve also. If you tried turning the Andersen valve with pressure on the system you might have blown a seal ring on the valve.

 

[rmeyer]

Last two days for first time - with city water press on the water is overflowing the fresh water tank.

No matter where I set the valve - city or normal - it over flows

Can it be the valve in the wet bay or the water pump?

Any advice would be appreciated.

Thx

Internal check valve in water pump probably bad. Buy a check valve and install it between water pump filter and pump inlet.

 

[david-steph2018]

ok. Will try it.
Does it matter if I’m turning it clockwise to get to city and go beyond ? Or counter clockwise.

In the past I just turned the arrow to city or tank or normal.
I never went 360 degrees in with direction. So maybe only going from 600 to 1200 o clock had caused this problem.

Being a 2017 model, I would bet that the Anderson Valve body is made of plastic. These have been known to fail and need rebuilt or replaced. During the 2019 National Rally, ABCORV was there and held a seminar about this issue. They said, they were redesigning the new replacement with a brass valve body. Which is how the valve is made now.
I ordered one in June 2019, and it took 6 weeks for it to arrive. In June 2022, the plastic one finally went out while we were in Nephi, Utah. It took me about 30 minutes to switch it out.
Finding a rebuild kit, can be difficult. You may be able to go to Lowe's/Home Deport or ACEE Hardware to find replacement O-Rings.
If it is the Anderson Valve, and you plan on replacing, order it now, there is a 6-week wait period:

Anderson RV Water Valve | ABCO RV - An Anderson Brass Company | United States

ABCO RV | Anderson RV water valves are designed, tested, manufactured and assembled in our Hartsville, SC facility. Built for adventure and backed by our 5 year warranty. 1629 W. Bobo Newsom Hwy, Hartsville, SC 29550

www.abcorv.com

 

[CoveredWagon]

The seal rings on the Andersen valve are not o-rings, they are a formed seal ring that looks similar to an o ring. Typically if it's a failed seal you'll find it's only one. I think there are four. If you get the plastic replacement part you'll also get four new seals. Replace the one and save the rest for the next time. Again remember never switch the Andersen valve with any pressure on the system, either from the campground or from the trailer.

 

[Alan Schneider]

The seal rings on the Andersen valve are not o-rings, they are a formed seal ring that looks similar to an o ring. Typically if it's a failed seal you'll find it's only one. I think there are four. If you get the plastic replacement part you'll also get four new seals. Replace the one and save the rest for the next time. Again remember never switch the Andersen valve with any pressure on the system, either from the campground or from the trailer.

This past summer I had the same problem in my 2021 Big Horn 3300DL. The Anderson Valve had to be replaced to solve the problem in my rig. I didn't know about the Seals that could be replaced. Best of luck. I was traveling around South Texas on the Gulf Coast. I didn't use the valve much. I allowed the problem to fill my fresh water thank and then turned off the hose. I used the pump in my rig to provide the water we needed. A new valve is not cheap. Check to see if it is a Seal.

 

[CoveredWagon]

Seal are not sold separately. I purchased a plastic replacement valve and used those seals.

 

[scottknight1]

When mine did that I found that when turning the Anderson valve to city, go past city and then turn back. Works without spending money.

that worked!! too cool!!! thx!!

 

[Alan Schneider]

This past summer I had the same problem in my 2021 Big Horn 3300DL. The Anderson Valve had to be replaced to solve the problem in my rig. I didn't know about the Seals that could be replaced. Best of luck. I was traveling around South Texas on the Gulf Coast. I didn't use the valve much. I allowed the problem to fill my fresh water thank and then turned off the hose. I used the pump in my rig to provide the water we needed. A new valve is not cheap. Check to see if it is a Seal.

Thank you for correcting my error. Its sad to me that things are built in ways that some of their parts (which can fail) are hard to replace or not replaceable.

 

[CoveredWagon]

Fortunately they usually only fail when valve is switched when there is pressure on the water system somewhere. It's often hard to remember to drain the pressure before switching the Andersen valve.

 

[Jesstruckn/Jesstalkn]

You can replace the internal valve with a kit. really easy to do. I found this one on line. You can shop around for it but they are getting harder and harder to find.
Jerrod

Valve - Repair Kit - For 4 Function RV Fill Station - 200RV-RK

***PLEASE NOTE THAT THE REPAIR KIT IS NO LONGER AVAILABLE - IT'S NOT BEING PRODUCED BY ANDERSON BRASS AS OF 7/15/20*** **YOU NOW MUST PURCHASE THE ENTIRE VALVE ASSEMBLY - SEE MANRV101-RF**

elkrv.com

 

[Jesstruckn/Jesstalkn]

Try these guys... Ron from Anderson Brass gave me this info in July of 2021. He said they had them. That was a long time ago so maybe not.
Next option is to replace the entire valve with the new brass one.

Atlantic Marine
Merritt Island, FL
Attn: Brian
321.501.4262
Atlanticmarine@cfl.rr.com

RV Water Pump Upgrade: Anderson Valve System Replacement Guide

Does your RV need a water pump upgrade or valve replacement? Read our guide on using an all-steel Anderson valve system to better control your water supply.

heartlandrvs.com

 

[Kurtski203]

Last two days for first time - with city water press on the water is overflowing the fresh water tank.

No matter where I set the valve - city or normal - it over flows

Can it be the valve in the wet bay or the water pump?

Any advice would be appreciated.

Thx

Ours as well. The problem is, there's a check valve on the water pump. It leaks past filling the fresh water tank. I took off the hose between the pump and the main water line [the from pump side] and installed a simple open/shut valve. Just remember to open it when using the fresh tank.

 

[scottknight1]

I added a check valve from Amazon in front of the water pump and that has solved the fresh water overflowing from the city water !
Thx everyone for the tip!

 

[Kurtski203]

I added a check valve from Amazon in front of the water pump and that has solved the fresh water overflowing from the city water !
Thx everyone for the tip!

Is it a white teflon piece? If so, it may not last. I tried 2 different chk valves. Both failed.

 

[scottknight1]

Brass. Hope it continues to work