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Norgren valve question
I know somewhere in the forum I saw a thread that someone had pictures of a norgren valves internal parts. Maybe I’m not looking in the right place. Today I found a stuck norgren valve dumping air as fast as the compressor was pumping. I’d aprreciate your opinion if I should replace the o-rings or the valve? And where to go to get them? I am sure it’s the original valve installed from the factory in 1991. Explains why the primary and secondary gauges would show the air pumping up to 55 psi and not going any higher. Thanks for your advice!
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14 Replies
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Mike,
All your Norgrens are likely in need of rebuilding or repair. I suspect however that at 22 years of age it is likely the 4 screws in the end cap(s) are frozen to the valve body and your efforts to remove them are not going to be successful. You also have the risk that if it is stuck it is because the internals have been exposed to moisture so new O rings and the effort to replace them will be a waste of time.
Your vintage Norgrens should still have the original Norgren numbers, and not the proprietary numbers assigned to Prevost so you can easily shop them for price. Find the closest Norgren dealer and contact them and Prevost for pricing.
Before you go to the effort to replace them, make sure your air systems are dry. And then keep them dry.
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Jon, Thanks for the reply, You are the best! I did get the Norgren apart and it looks to be in good shape internally other than the o-rings had shrunk. I found two over the tag axle. The one leaking was for the rear air bags. Not sure if the other one controls the front air bags or not. Going to take it down and check it out while I’m up to my elbows in grease! I looked at the drawing but can’t tell if there are any more for the air system. Don’t see any others at the rear. Not sure if any are in the front of the coach!
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Mike,
Assuming your chassis is a motorhome conversion you should have 3 five port Norgrens, two located in front of the drive axle fender liner and one in the steer compartment on the rear bulkhead. You likely have three port Norgrens, two on the RH side of the frame and one on the opposite side frame. There will be one in the steer compartment and one over the steer axle. It is possible depending on the converter there are more.
If you opt to repair them as opposed to replacing make sure you bench test them. The not only can leak through the closed air path (for example the path through ports 1 and 2 is closed until you put air pressure to port 12) but they can leak sideways from the end caps. If you install a leaker it will drive you nuts chasing the leak.
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Jon,
Got this seated coach from Prevost Jacksonville. It is a shell now, getting ready to buildout once all the mechanical work has been done. As luck would have it I ran the numbers from the Norgren as you suggested. One company wanted $580 but found new ones in Ohio for 10 bucks each. Ordered three and their on the way. Can’t beat that deal!
Thanks for the advice!
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Mike, where/who in Ohio, I am enroute and looking for new norgrens, welcome to call me..870-350-1032 or email to rahangman@yahoo.com,thanx
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Hey Rod, I found them at a company in O- HI – O. The website is http://www.nri-isd.com/
It’s in Delta, Ohio. You can look at their contact us page for address.Mike
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I say it spelled “Ohno” this weekend. 🙂
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Rod
Turns out NSI in Delta, Ohio says the Norgren valve is new but they are slighty used. New but used, haha that’s a new one. Contacted Norgren and they can get me a new one with the warranty for $650 or I can buy (5) @ 420 each. There will be a two week lead time on the order. FYI!
Les, I guess it is “Ohno” after all!
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I will be just a few short miles from Delta, Oh, ( I grew up just a short distance from Delta) and will try to squeeze a few minutes to look them up. Maybe an explanation? Will let you all know if so.
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Roger,
Keep
us posted. I have exhausted all efforts dealing with Norgren direct
for various valves for our buses with no success. They’re proprietary
with Prevost and I could never cross anything over. -
Hey All
If you need someone to make up a volume discount on the 5 port norgren valve, let me know. I have replaced the front and rear passenger but the drivers rear is now leaking. It is original, which is not bad on a 91 coach. When I crawled under there, I found the previous owner had used a pair of neddle nose vice zrips to close off the leaking exhaust. I removed the pliers since the exhaust had torn and now it is really leaking.
Mike
What coach number are you. Mine is a 91 XL40, M-1839. Rodger lives not far from me and is very close in number. My coach was a Vegas casino runner in it’s early life and I bought it in Jacksonville FA, from a charter company that bellied up after only running the coach for 1,000 miles. My coach only has 86K original miles since new even though it is a 91 model like yours. Mine was a seated coach but I have been converting it to a motorhome over the last 9-10 yrs. Getting closer but not sure it will ever be finished completely.
Rob
Missouri
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Hey Rob,
Mine is M-1001. Glad you are getting closer with the build out, I’m just beginning! I’ve had the coach for 5 years but had no time to work on it. Finally see a little light in the tunnel and gettting a few things done. Once I get it driveable (Hopefully within a few days) I’m going to start on the build. MIne was a seated coach used by Knoxville Tours, has about 240,000 miles on it. They have a garage for minor work but it’s apparent they never did anything but check the oil, fuel and air in the tires. Surprised they didn’t leave pliers hanging from something on the coach too! I will start posting pictures once I get something going. Bus for sale has this 94 for sale for $23,5000. I got mine for $75000. Coach is in great shape other than a few mechanical issues.Mike
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Some valve pictures to help answer your questions.
Norgren part number “K81EA88KACKAC”
Prevost part number “K910058”
These numbers are from 2009 and I seem to remember that it was a hassle with a wait to obtain from Norgren and that Prevost parts were on the shelf and at a simlar price, if not even cheaper. I went the Norgren route because my manufacturing plant was still in business and I thought it would be easier, cheaper. I have since changed my outlook and find that most things “PREVOST” are best purchased at/from Prevost. You can’t beat having the correct item shipped promptly and for free! Premium delivery is on you of course.
My opinion here, life is too short to be wasteing time rebuilding Norgren valves. For the hobby aspect of it and the curious, take one apart and after studying it through it away and move on. Carry one of each in your spare parts box.
My recommendation, replace all your Norgren valves and fittings as soon after buying a coach as possible.
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To add to Jim’s excelent post above, those shown are the valves we refer to as 5 port Norgren valves and those specifically are on the bulkhead forward of the drive axle and control the left and right rear.
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