The fittings are 6mm. I bought from Amazon. I also use the PA tube, not the PU tube. PA is more suitable for higher pressure. But the pressure from the compressor is about 8 to 9 Bar. So usually is fine for the common fittings and tubes.

 

PA ? PU ?

Sorry, please pretend I'm completely stupid. Trying to make sure I don't miss something as this is new to me. Can you possibly do a step by step for how you did this procedure wise?

All the vehicles I've had with air suspension have had compressors that could fill the whole system even when on the ground. So this delicacy use new to me. Thank you for the help by the way.

 

PA means polyamide, PU polyurethane. The material of the tube. It can work, if fill the system with the compressor. But it can cause overheating of the compressor. And you probably get too much moisture into the system. During normal operation the intake air will be dryed in a dryer cartridge. When the system releases the air, the cartridge gives back the moisture to the outgoing air. The capacity of the cartridge is limited. So if take all air for the initial filling you can get moisture into the system. Causing corrosion or freeze in winter. So in my understanding the initial filling with dry gas is important. They use nitrogen, because it has a defined composition and contains not water. If you can provide compressed air which contains no water, it should work too. Because over the time the nitrogen will be replaced by environmental air anyway. For me the system looks like a patents circumvention to avoid conflicts with competitors patents.

 

No, the air system has a recovery function. As vehicle lowers, the air returns to the tank. The compressor pulls from atmosphere if the tank is low otherwise reuses existing air.

As with most pneumatic systems, the nitrogen is great for about 2-3 months!

 

The tank is there for a quick response of the system. When the car is unused for a certain time, the air from the tank is release through the dryer cartridge to the environment. So the pressure is about 1 bar. When start the engine the next time the compressor fill it again to about 8 bars.

 

Pkainzner. How is the valve working out?
any leaks when using Car?
any issues?
I'm thinking similar solution.

Looking for metal 3 way valve. I assume it will have to be 1/4" od, with push in to connect each side aur hoses.
what size is your bypass side?

Can ypu share details about parts? Valve plus tank, gauges, connector for gauges at the tank (not car tank but nitrogen tank).
Thanks for info.

 

Pkainzner and ciaka,

I want to try this also. I will be installing a new air pump this week.
Questions: Tubing size is 6mm or 1/4 inch? Material for "T" and valve: Plastic or metal? Vendor for parts: Amazon, McMaster, ? What was your nitrogen initial fill pressure?
I was thinking about adding second valve between "T" and air compressor to be able to isolate the compressor for future troubleshooting.

ciaka, your air suspension information write up was great! Thanks!

Patrick