Pressure Protection Valve (found) - Printable Version

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+--- Thread: Pressure Protection Valve (found) (/showthread.php?tid=4993)

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Pressure Protection Valve (found) - Richard - 06-04-2019

I did not know where the PPV was located on our coaches, despite having searched for it. It is located on the bulkhead forward of the drive axle. 

I was trying to help a fellow Newell owner who could not build pressure in his supply despite having plenty of pressure in the brake tanks. We suspected the PPV but his tech could not find it. Now we know it’s location. 

   

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RE: Pressure Protection Valve (found) - smagown - 06-05-2019

Richard:

Is there more than one valve?

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RE: Pressure Protection Valve (found) - Fulltiming - 06-05-2019

I have only found one on my coach and it is up above the drive axle.

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RE: Pressure Protection Valve (found) - Richard - 06-05-2019

I only saw one. The reason I posted this, was that most techs/mechanics will start the search on top of either the primary secondary brake tanks, or the wet tank. On our coaches, it is on neither.

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RE: Pressure Protection Valve (found) - smagown - 06-05-2019

Yes, that is where I looked also.
Thanks,

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RE: Pressure Protection Valve (found) - pairodice - 06-06-2019

I could have sworn that the bus mechanic in Phoenix said mine was located over the primary tank... maybe that is something else? I need to build some cribbing so I can crawl under there and check it (and replace it!)...

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RE: Pressure Protection Valve (found) - Jackflash - 06-06-2019

Is that a Bendix PR-4 (288323N) with a 70 PSI closing pressure?

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RE: Pressure Protection Valve (found) - Fulltiming - 06-06-2019

Adrian, I have a check valve on the inlet hose on top of each of my two front mounted brake tanks but my PPV is over the drive axle.

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RE: Pressure Protection Valve (found) - Richard - 06-07-2019

Jack, that sounds right.

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