Replacing the Non Return Valve / Check Valve on a NuAir Air Compressor and how it works.
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- เผยแพร่เมื่อ 13 ก.ค. 2024
- In this video I replace the NRV on my SIP Airstream 150 compressor. I also show how the valve works by disassembly.
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🔟My Non Return Valve
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⬇️Timecodes
00:00 Introduction
01:51 Disconnect air line and depressurise
03:15 Remove the old NRV Check Valve
04:55 Refit the new NRV Check Valve
07:37 How the Check Valve works
09:02 Now to use Fernox LS-X
12:08 12 hours later
12:18 How NRV & Unloader Valve work
13:01 Reference Photographs
13:54 Credits
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Disclaimer:
This video only contains tips and my personal methods that could be helpful when carrying out home car repairs or replacing parts. Coats & Gaiters is not liable for any harm, injury or property damage incurred while carrying out such repairs or replacements, that are a result of incorrect use or misinterpretation of the provided information. This video is for informational purposes only and does not guarantee achievement of a specific result. The user is personally liable for incorrect use of repair equipment, tools or car parts, in particular, when this use poses the risk of injury. Coats & Gaiters strongly advises taking personal care and adhering to all safety rules when doing any repair or replacement. The use on inferior or low quality vehicle parts does not guarantee the proper level of road safety.
#aircompressor #sip #compressor - ยานยนต์และพาหนะ
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Good explanation.
I'm just fixing up an old workzone compressor, which has been loaned to me. I've put a new manifold and unloader on it, built up air to pressure but wouldn't restart and then blew the fuse. I noticed that the air was travelling back to the pistons, so took a look at the check valve, only to find out that nut/ cap had been soldered on and was missing the spring and pastel lol, new one ordered from Amazon, fingers crossed, thanks for the video 👍
That's great news hope it all comes good for you.
Excellent video and explanation. Thank you Coats and Gaiters. Exactly the info I was looking for.
That's fab news glad it helped.
Thanks for the video. Much appreciated. You have helped me understand why the compressor is not starting with air in the tank.
That's great news. My issue in the end was the non return valve on the tank back leaking to the compressor.
Good information. Thanks for sharing the knowledge.
Hope it helped and thank you for leaving a comment.
Muy interesante, gracias
Well done for sharing the video. I would like to say that PTFE tape would have been a far better sealing agent on the main thread into the reservoir. You could have put plenty of turns of tape on the thread, & wound it in using a spanner. This would have provided an instant seal, allowing testing straight away.
Your explanation of how the valve operated was very good
Thank you for your comment and compliment Clive. You can buy thick PTFE tape I believe so I probably should have looked into that option like you say. After all it’s what plumbers use.
The solenoid ones work much better and seem to be more reliable.You also don't need the bleed off tube to the motor start switch. simply wire in parallel across the motor 240v connections.
Hi. Great vid and is the only one i can find that explains things clearly. I have the same compressor and unfortunately you have said how the unloader valve tube connects at the other end. Does it go in under the main on off unit and if so, how does it connect. Mine has blown off today and im in the middle of something so want to get it sorted asap. Hopefully you'll see this and let me know. thanks in advance.
The tube goes to a pressure switch under the main power switch. It just turns to lock. If you search "Condor EV 1S Unloader Valve for MDR1 Pressure Switch" your see it
hi. Thanks for the reply but unless im missing something it still won't work. The black tube has a very thin washer type thin right arlt the end and the brass collet thing pushes up to it but how does that lock into the housing. If its supposed to be push fit its not working. it just slides in and out. Nothing to turn to lock or unlock the tube, it just spins. freely inside the housing. I could do a short vid and upload it maybe?
The one end is just a tube connector to the tank. The other end does a 1/4 turn or such underneath the power switch and this part has a spring valve in it. I might be able to do a short on it tomorrow afternoon.
th-cam.com/users/shortsVpIi3OyvJ_o?si=1YkJgoMSfaSSZkQJ
Also on my other air compressor which I got as non runner ,the motor wouldn't start so I changed the capacitor and it started to work but for only 2 days ,now when I swith it on ,the pump makes a funny noise as its stuck but wouldn't start ,any idea fellow ?
have you tried with the air tank half empty to take the load of the motor?
Hiya mate ,great video ,explanation is quite good, my compressor has the same problem and I replaced the nrv but the problem still exists,I noticed a bit of air leak from the pipe connected to nrv and pressure switch, leak is at the end of pressure switch ,would you say that leak is the problem? I will be grateful for your advice
Which part is leaking? the copper pipe or the thin black pipe?
Sir, does the Fernox work better than Teflon tape?
Good question. I think I used Fernox after trying PTFE and it still leaked. Fernox needs leaving to set so not an instant solution.
Hello!
I have encountered a problem with my new NUAIR B3800 230Volt air compressor.
I do not know if it is the voltage or the cold weather. The compressor would run from 0-7 bar than stop suddenly and be trying to push again to 10bar but can,t start( termic fuse won t pop up). After a few seconds if i switch from on to off it will maybe start again. Now there s to options he does that again at 9,8 bars or just goes untill 10 and releases the pressure.
I do not know if its the air compressor fault or cold weather+ small electric tension( when in use the voltage drops to 207V).
Thanks for an eventual answer, have a nice day!
This sounds all too familiar. I was having this until I replaced the one way tank valve from the compressor that feeds the tank. But just like you, as winter came in it has been struggling to run if the tank is holding high pressure and pops the overload trip. If I drain the tank down to half pressure it will cope and run to full pressure. I am at a loss to what this is. In winter the oil will thicken a bit and increase the load on the motor. I wonder if the starting capacitor is still to blame and maybe I should just buy a new genuine capacitor for £30.
@@CoatsandGaiters, i tried to turn on my compressor today and suddenly stopped working, now it won’t start. Called the dealer today, i dont know if i should give it another try or just ask for my money back and look for another brand. But i do not know another compressor to give that cfm( air flow) and running on 230V.
@@spicys1 has the compressor got a short and decent power connection or is it at the end of a long lowish rated cable as you could be loosing voltage on a long run from the main consumer unit.
@@CoatsandGaiters the power cable was connected near the fuse panel and the electricity counter.
@@CoatsandGaiters it worked from 0 bar to 5 bar than stopped working. Started with a pitchy sound like a too tight friction. Now it wont do nothing.
The voltage of the outlet when compressor is in use is 208 Volt
Sir, what du you call the sealant
FERNOX LS-X LEAK SEALER 50ML
How is it going?~ super!best video-workk.my dear,
Thank you
What was The malfunction?
Non return valve wasn't sealing fully allowing air from the tank to pressurise the piston cylinder.
I think the gasket needed the heat to activate it..
Might have helped, like you say.
Solve the problem of stopping the compressor before charging
Compressor working fine now.
That check valve will never stay sealed up. You didn't tighten it all the way to the tank. You turned it backwards to meet the tube. You have to replumb to meet the check valve.
Thank you for the comment though originally when it arrived new it was leaking from there and I successfully sealed it using Fernox and that was in 2010. Fernox silicone sealant seems pretty good stuff. This one hasn't leaked and it's been nearly a year now. You can't fully tighten to the tank as the pipes would be out of alignment, hence the sealant.
@CoatsandGaiters you can only tighten it so far. And back up to align.
15 mins of my life i wont get back
Thank you for the feedback John.