Fresh Water Inlet Leak

[csevel]

Over the last week or so, I've noticed a drip from the fresh water inlet.  It drips about every two seconds.  I tightened the fitting with a 1/2" Allen key but it did NOT solve it.  I don't exactly know where to look next!?  Any tips, links and/or advice appreciated!  Here are some shots of my pump set-up and the basement (what I think are the hot and cold check valves)...  

Edited Wednesday at 09:08 PM by csevel

[mossemi]

@csevel is the leak/drip visible from the outside or the inside?  Hose connected or not?  Are you trying the fill the fresh water tank?

Mossey

[csevel]

1 hour ago, mossemi said:

@csevel is the leak/drip visible from the outside or the inside?  Hose connected or not?  Are you trying the fill the fresh water tank?

Mossey

The leak is visible from the outside only and the hose is NOT connected.  I'm not trying to fill or anything actually..the tank was full.  I just noticed it dripping when I was walking around the trailer.

[Mike and Carol]

Does the leak increase frequency if the water pump is turned on?  If your backflow valve is not functioning 100% it could be letting fresh water flow back and drip from the fresh water inlet.  I had to replace the fresh water backflow valve because I had similar symptoms.  Mike

[csevel]

15 minutes ago, Mike and Carol said:

Does the leak increase frequency if the water pump is turned on?  If your backflow valve is not functioning 100% it could be letting fresh water flow back and drip from the fresh water inlet.  I had to replace the fresh water backflow valve because I had similar symptoms.  Mike

The drip did not significantly increase when the pump was activated.  The DH looked while I ran the pump.  If I have to replace the backflow/check valve...what size is it?  There are soo many to choose from on Amazon!

 

Edited Wednesday at 11:53 PM by csevel

[Geronimo John]

44 minutes ago, Mike and Carol said:

Does the leak increase frequency if the water pump is turned on?  If your backflow valve is not functioning 100% it could be letting fresh water flow back and drip from the fresh water inlet.  I had to replace the fresh water backflow valve because I had similar symptoms.  Mike

You are correct.  

Here is a bit of context as to the problem and how to reset the check valve without a lot of fuss:

DIY - Check Valves for RV Water Pumps.docx

It worked for me on SOB trailer.

GJ

[Mike and Carol]

1 hour ago, Geronimo John said:

You are correct.  

Here is a bit of context as to the problem and how to reset the check valve without a lot of fuss:

DIY - Check Valves for RV Water Pumps.docx 23.7 kB · 0 downloads

It worked for me on SOB trailer.

GJ

If the above doesn’t work, here’s what I used:

Check valve

[Townesw]

Have you added more fresh water to the tank since you noticed the drip? If you suspect that the fresh water inlet check valve located under the basement floor is not seating you might try adding fresh water to see if it flushes out debris before you replace the check valve. 

[csevel]

1 hour ago, Townesw said:

Have you added more fresh water to the tank since you noticed the drip? If you suspect that the fresh water inlet check valve located under the basement floor is not seating you might try adding fresh water to see if it flushes out debris before you replace the check valve. 

The tank was full when I noticed the leak so, no.  I'm going to try John's suggestion today!