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Topic: Pressure protection valve (Read 1236 times) previous topic - next topic

Pressure protection valve

My pressure protection valve started leaking out of the tiny hole on the bottom. I removed the bottom of the valve just to see the condition and everything looks okay. Not much corrosion, the rubber manifold piece looks in good shape.
Is there anything else that can be going on? I'm trying to save myself some time by not pulling this all apart to replace the valve because I leave on a trip in 2 days and didn't want to get into this right now until I get back next week.
Dylan and Aimee
2001 U320 4013
Unit# 5896
450 HP/IFS
 

Re: Pressure protection valve

Reply #1 –
Dylan,

In your 3rd pic. you are holding a rubber diaphragm with a metal washer. If you look real close at that piece there is a crack ring in the rubber. That is where you air is bleeding through at. Years ago you could get/buy a replacement diaphragm but that time has passed. I was told it was for safety reasons. The new vales are cheep enough though so order a couple as if one has failed the other one may not be far behind.

Mike
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."

Re: Pressure protection valve

Reply #2 –
Napa has a replacement, guess I'll dig into it and replace it. Looks like I'll need to take some plumbing apart to get to it...just a tight spot and didn't want to spend the time this weekend.

Thanks.
Dylan and Aimee
2001 U320 4013
Unit# 5896
450 HP/IFS
 

Re: Pressure protection valve

Reply #3 –
Great idea as where you are now is better than on the side of the road in a picnic area.

Mike
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."

Re: Pressure protection valve

Reply #4 –
Quote from: Pamela & Mike –
Great idea as where you are now is better than on the side of the road in a picnic area.

Mike
Very true my friend, been extremely lucky so far that everything that's gone wrong I either caught it before a trip or it wasn't bad enough to strand us....yet 😁
Dylan and Aimee
2001 U320 4013
Unit# 5896
450 HP/IFS
 

Re: Pressure protection valve

Reply #5 –
I replaced mine. I left the housings in place and took the new valves apart and rebuilt the valves in place. Took about an hour to do both, no need to take all the plumbing apart.
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country

Re: Pressure protection valve

Reply #6 –
Quote from: bbeane –
I replaced mine. I left the housings in place and took the new valves apart and rebuilt the valves in place. Took about an hour to do both, no need to take all the plumbing apart.
Was gonna do that but thought they didn't sell the parts, ended up replacing the one that was leaking today. Wasn't too bad, also sprayed and tightened a few leaks while I was under there. Ordered another for the front tank and will tackle later.
Dylan and Aimee
2001 U320 4013
Unit# 5896
450 HP/IFS
 

Re: Pressure protection valve

Reply #7 –
Can you please post part numbers for those?
Frank & Daisy
NO LONGER  "looking for the perfect Foretravel
36' or less non slide preferred."  She has been found and is ours.
2003 U320 36' non slide  Unit 6103
Cummins ISM 450
Allison 4000MH

Re: Pressure protection valve

Reply #8 –
Quote from: Lt403 –
Can you please post part numbers for those?

Here's a post from the Part Number Collection topic with the various air tank fittings including the protection valves and cross-references 

Part Number Collection

Quote from: steve –

Haldex: 90555396
Midland: N15759DG
Meritor Wabco: 9348990060
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320