Help !Kem Aqua virgin ! Any advise PLEASE!

[wptski]

I'm pretty sure they're a number 10 (or my eyes are worse than I thought). Did not check the thread.

Yes, they are stainless steel.

I use the harder hose push lock connector to check valve, soft hose check valve to cup. With the way my gun is now set up I could get away with no check valve, it makes a nice connector and does no harm. If your gun is stock you have to use a check valve.

Tom

That's clearly a #10.  The 18TPI and 19TPI are pretty close, did it go on real tight the first time?? ;D  The push to connects I've used for the standard Fuji 6mm tubing only comes with British pipe threads.  A British 1/8" is 28TPI where a USA is 27TPI, they work but one needs watch how deep you run a tap in.

The stock Gxpx only needs the check valve to keep the material from getting into the gun's air only channels.  You wouldn't need it for the PPS "unless" the material somehow got past the liner into the cup.  I'm going to use a Fuji pressure with a check valve and adapt it to the PPS soft tubing because the Fuji tubing is too stiff to use on the PPS cup as I don't want to break it!

 

[brewster201]

Hello Tom, there is no need for a check valve when using the 3M PPS system.
There is no direct contact between the tube and the fluid as your only pressurizing the pressure cup and pushes on the liner
Just direct connect tube from the gun to the pressure cup
Long day hope that helps lol

 

[tjbnwi]

I'm pretty sure they're a number 10 (or my eyes are worse than I thought). Did not check the thread.

Yes, they are stainless steel.

I use the harder hose push lock connector to check valve, soft hose check valve to cup. With the way my gun is now set up I could get away with no check valve, it makes a nice connector and does no harm. If your gun is stock you have to use a check valve.

Tom

That's clearly a #10.  The 18TPI and 19TPI are pretty close, did it go on real tight the first time?? ;D  The push to connects I've used for the standard Fuji 6mm tubing only comes with British pipe threads.  A British 1/8" is 28TPI where a USA is 27TPI, they work but one needs watch how deep you run a tap in.

The stock Gxpx only needs the check valve to keep the material from getting into the gun's air only channels.  You wouldn't need it for the PPS "unless" the material somehow got past the liner into the cup.  I'm going to use a Fuji pressure with a check valve and adapt it to the PPS soft tubing because the Fuji tubing is too stiff to use on the PPS cup as I don't want to break it!

Not that I recall.

The check valve is there to keep the cup under pressure when your not pulling the trigger. There is no air pressure/flow to the cup unless the trigger is pulled. The way I've modified my system as long as the turbine is on there is pressure to the cup.

Tom

 

[wptski]

Not that I recall.

The check valve is there to keep the cup under pressure when your not pulling the trigger. There is no air pressure/flow to the cup unless the trigger is pulled. The way I've modified my system as long as the turbine is on there is pressure to the cup.

Tom

Yeah, I get your point although there are two stages when the trigger is pulled.  The air leads the material flow.  If a check valve was needed I'm sure the PPS H/O cup would include one.

 

[tjbnwi]

Not that I recall.

The check valve is there to keep the cup under pressure when your not pulling the trigger. There is no air pressure/flow to the cup unless the trigger is pulled. The way I've modified my system as long as the turbine is on there is pressure to the cup.

Tom

Yeah, I get your point although there are two stages when the trigger is pulled.  The air leads the material flow.  If a check valve was needed I'm sure the PPS H/O cup would include one.

There is no where near enough lead to pressurize a cup prior to air to the air cap.

No reason for 3M to include it, it's part of the gun, not the PPS accessory.

Tom

 

[wptski]

Not that I recall.

The check valve is there to keep the cup under pressure when your not pulling the trigger. There is no air pressure/flow to the cup unless the trigger is pulled. The way I've modified my system as long as the turbine is on there is pressure to the cup.

Tom

Yeah, I get your point although there are two stages when the trigger is pulled.  The air leads the material flow.  If a check valve was needed I'm sure the PPS H/O cup would include one.

There is no where near enough lead to pressurize a cup prior to air to the air cap.

No reason for 3M to include it, it's part of the gun, not the PPS accessory.

Tom

Are we sure that all pressure is released when the trigger is released?  It may not hold it but it may not release it fully.

A barb on the H/O cup isn't made like a barb fitting on a Fuji, it's too blunt and the Fuji is pointed.

 

[tjbnwi]

There is no air bleed to the cup on any of my guns when the trigger is release.

There is no barb on any of my cups, they have a smooth port.

Tom

 

[wptski]

There is no air bleed to the cup on any of my guns when the trigger is release.

There is no barb on any of my cups, they have a smooth port.

Tom

Yes, no air when the trigger is released but would it release completely if it wasn't for the check valve?  When the trigger is released your Q4 dumps the pressure because of this, it depends on the seals inside the gun or if they can hold pressure in both directions.

The standard Gxpc cup has push to connect type but I meant the barb that's on the gun, a 90 deg barb.  It isn't like what's on the PPS H/O cup.

 

[tjbnwi]

The PPS cups do not seal 100%.

Tom

 

[brewster201]

Bill there is no need for the check valve period. I never have an issue with liner deflating/pressure cup losing pressure when the trigger is released, if it does the cup is leaking. This is a non issue

Just try it and you will see

Let's get back to Kem Aqua finishing