Puzzling Water System Problem

AlMar · Member

Puzzling Water System Problem

Delta18 · Guru

The non return valve is either in the filler connection or part of the Pressure Reduction Valve. This is a brass cylindrical object about 100mm long, it will be on the mains water hose just behind the filler under the van.

Give it a 'crack' with a hammer or such while the pump is running. This may free it up.

If it does it may be time to dismantle it for cleaning or replace it with a new one.

ants_oz · Veteran Member

Hi Almar,

In a standard Jayco plumbing config, the non-return valve is part of the pressure regulator assembly. It is most likely installed underneath the van, and is a brass unit about the same diameter and half the length of a 'red bull' can. The small non-return valve inside them can get stuck. You can disassemble and check for grit blocking the non-return, but be warned that to the uninitiated, the way these things are assembled does not appear totally logical - I wouldn't want you to end up with a bunch of parts and no idea how to put it back together.

Side note - it is my observation that the particle contaminants that are common in tap water can play havoc with these non-return valves (which brings up the separate subject of filtering incoming water).

Edit: Neil beat me to it :)

-- Edited by ants_oz on Wednesday 11th of January 2017 08:04:05 PM

AlMar · Member

Thanks for the info, Neil and Anthony. I'll have a look in the morning. biggrin

Edit; also found some useful info down in the comments on this web page....

http://australiancaravans.com.au/library/11/2010/supplying-water-to-your-jayco/

-- Edited by AlMar on Wednesday 11th of January 2017 10:03:42 PM

JohnR · Senior Member

Alan

We have 2013 Jayco Sterling Outback and experienced the exact same issue some time back. The culprit is "Non Return Valve' OR A John Guess Non Return Valve. Needs to be inserted in the line before the pump just back of the inlets valve.

I had the issue for several months and the head service person from Jayco Coffs Harbor gave me an interim fix. Use a Tap connector with a few centre meters of green hose with stop **** in the end. When you pull up at free camp or morning tea put the hose connector over the inlet valve outside where you normally connect your water hose and then turn on your pump. Works a treat and was only replaced when I had the Van serviced by Jayco.

Send me a PM if you need further clarification.

JohnR

"You have Gotta Love Your Jayco"

TAJ · Senior Member

ALMAR have the same problem I put a ten cent piece in a hose fitting

that screws on the tap works for me was going to fix it 4 yrs ago

TAJ confuse

AlMar · Member

I was just thinking this problem through again, when I remembered the last caravan park we stayed at had the mains water turned off for a couple of hours while they did some work. I' wouldn't mind betting they introduced some muck into the system, and when they turned it on again, I copped some of the dirt in my supply, gumming up the works! Grrrr!

Anthony was on the money - filtration!!!!

macka17 · Guru

I have a 6\7 inch Plastic screw on ends, garden water filter
on tap end of hose.

has a long internal filter, about 1 1\2 in Dia.
NO water goes in the van.
Without going through that first.

around $8. Cheap ins.

Plus I carry a plastic one way valve spare ($20).
Any blockages, I swap out. 2 or 3 min's with couple shifters.
and fix at own leisure.

No missus geeing me up. Water. Water.
Where's the Bl--dy Water.

They have several grades.
Mine is to remove "most" small solids, grasses.
Not bacteria etc.
Had this one around 10\12 yrs.
Clean with bleach occasionally.

Bill B · Guru

It is about time Jayco got its act together and fitted a better quality NRV/PRV as numerous owners have been having trouble with them for the past 2 - 3 years

AlMar · Member

Well, this morning I tried tapping the brass in-line Pressure Reduction valve, but no joy, so I popped round to the local plumbers merch and bought a new one, identical rating, for $72. Fitted that, and still no joy.
I went to the local Jayco dealer and they sold me a new inlet panel (which I needed as the plastic lock had fell to bits on the old one) for $69. The new hose connector DOES HAVE a built-in non return valve. The old one I took off didn't have it. I presume it had disintegrated internally and the debris was blown out when I ran the pump.

So, all fixed now, problem has gone away!

If this ever happens to anyone else, the plastic hose connector can be replaced in the inlet panel for just a few bucks, or as another caravanner stated, use a short piece of hose with a couple connectors with built-in shut off valves. Simple!!

And the moral of the story is... use an external filter!!! smile

mr glassies · Guru

I have a cap I take of the hose connector and put the cap on to seal of that part of the system other wise it sucks air and pump surges . Don't get to hook up to town water much so it don't worry me .

Dibs