Air Venturi 4500 psi compressor issue

[Mikelo123]

Yeah so far not impressed....

I would assume any distributor would be able to order them so going to try that Monday....

Anyone got a link to the rings for this thing I would be VERY grateful!!

 

[be4meliz]

pyramid air shows in stock https://www.pyramydair.com/s/a/Air_Venturi_Air_Compressor_Electric_4500_PSI_310_Bar_110V/7458 @ 6.95 ea. They go out of stock quickly. Go down page & scroll across compatible parts for compressor ( believe it was 3rd screen) They also have a plastic tool that stretches ring over piston ( would recommend)

 

[jking]

Doc, I didn't catch it if you did or didn't check the two check valves in the system. The first being in the top of the low pressure cylinder head and the second one that is in the bottom of the filter housing where the high pressure tube connects. There is a green oring seal on that one. The first one is just a white hard plastic of some sort. I can tell you the first stage puts out about 400psi by itself. 

Jking

 

[jking]

Doc, send an email to this very nice lady. 

Stacey H (Air Venturi) <[email protected]>

 

[Mikelo123]

Hi JKing,

I sure did and replaced the o-rings and check valve and cleaned up all surfaces etc...

Pyramyd is looking into a set of piston rings for me as well as the pressure seals....I was told they offer a piston complete with rings and rod with seals so will order that so can just pop it in.....Have the gaskets set etc. so will replace the head gasket on the high side and hopefully I got more than 12 hours out of it this time....



Guys can't thank you enough for the help and advice!!! I am NOT mechanically inclined in any sense of the word but you guys sure make it easy!!

Speaking of mechanically inclined got my new "play" truck back!! 77 F250 rebuilt 400 big block, 4 speed with granny low, Dana lockers!! Will pull the house off the foundation if I wanted it to!!

 

[Bigragu]

https://www.pyramydair.com/s/a/AV_4500_Compressor_High_Pressure_Piston_Rod_Seal/8049

just like HUMDINGER mentioned, you’ll need that special tool to install these

 

[jking]

Hi JKing,

I sure did and replaced the o-rings and check valve and cleaned up all surfaces etc...

Pyramyd is looking into a set of piston rings for me as well as the pressure seals....I was told they offer a piston complete with rings and rod with seals so will order that so can just pop it in.....Have the gaskets set etc. so will replace the head gasket on the high side and hopefully I got more than 12 hours out of it this time....



Guys can't thank you enough for the help and advice!!! I am NOT mechanically inclined in any sense of the word but you guys sure make it easy!!

Speaking of mechanically inclined got my new "play" truck back!! 77 F250 rebuilt 400 big block, 4 speed with granny low, Dana lockers!! Will pull the house off the foundation if I wanted it to!!

Well, not really that easy, I believe the screw that holds the small high pressure piston in place has to be removed from the inside of the larger piston, part number 29 which you can only access by removing the front cover off the crank housing yadayada.... 

BTW Doc, I have a lot of photos on how to replace the seals and other schematics as well. 

 

[Bigragu]

So, what is the status? All fixed?

 

[Mikelo123]

Nope....Well getting closer!!

Air Venturi is sending me a new gasket set, seals and rings. Should ship tomorrow so hopefully by next weekend will be up and running!!

 

[scratchcoobster]

Good luck with this continuing saga. Hope it all works out.

 

[Mikelo123]

Hey All,

Parts FINALLY arrived for my compressor and got everything cleaned and installed today.

Builds pressure but only ran it briefly as now I am not getting water flowing....The pump in the bottom of the water tank is moving water but it is not flowing through the heads as it should.

Anyone ever experience that before?

 

[Guest]

There's an air pocket in the system. Give the outlet line a pull like you're siphoning gas and it will work.

 

[Humdinger]

It sounds like you have a blockage somewhere in the system if the pump pushes water but it's not circulating. Are you sure that everything was reinstalled as before? I'd disconnect the hoses to the two cylinders then use an air compressor to see if air flows easily through the cylinders. It's either reassembled incorrectly or there is debris blocking the water flow somewhere. Check the water path through the cylinder jackets. You can blow through a hose connected to one end of the cylinder with the other end disconnected from the hose to check. You could also use a shop compressor with an air cleaning attachment blowing through a water line with the other end disconnected.

 

[Mikelo123]

I am at my wits end on this compressor....Got it back together and water flowing and STILL not building pressure!!!!!!!!

Replaced the high pressure side piston and rings and seals and all new gaskets etc.

What am I missing???

 

[ghoststalker]

Yo, could you stop spamming op's thread with your useless crap, my mom once said, if you dont have shyt to say that is helpful to others. Don't say it.

To op. The first thing to look for when its not building pressure is leaks. Even the smallest leak will prevent it from building pressure. Check all lines. Turn the compressor on and stop it. Listen to hissing. Look at the guage. Is pressure dropping? If there is no leaks and pressure doesn't drop. It can be the high piston rings. You have to take the cylinder heads and replace the high piston rings. It should come in a kit with the compressor.

The av compressor aint bad. I have the hatsan lighting which is basically the same compressor for 2 years and its still running fine. All compressor will have a problem with it, doesn't make it bad. Even a $2000 daystate have issues with it too.

The hide member button works great ! 

 

[Mikelo123]

So I was able to get it to build pressure last night but stopped building at around 1700 PSI so seems I am on the right track.....Have a feeling as the last poster said its a small leak somewhere that I just haven't been able to pinpoint yet!!

Thanks guys for all the help and advice!!

 

[jarmstrong]

sounds like the low pressure outlet reed valve leaking back through. When the high pressure piston tries to increase the pressure, that valve lets it leak backwards to the low side if it is not sealing, thus you only build pressure to 1700 psi, that is what the low side puts out

any way that was the problem I found with mine compressor

 

[Mikelo123]

And I have NO idea what the water issue was but I pulled the lines and popped em back on and the water is flowing great now so almost there!!

 

[Mikelo123]

Thanks jarmstrong!

Where is the reed valve on the low side you mentioned located??

 

[jarmstrong]

on top of the low side cylinder under the water cooling head, if the thin reed valve is bent upward at all, it will leak back, it needs to have a little springiness to it keeping it sealed

EDIT:I see that this is the same thread I posted to before, my dumbness, please forgive me for repeating the same info