Filling Steyr AP Cylinders ?

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Gwelo
Posts: 253
Joined: Thu Jan 19, 2012 10:14 pm
Location: Hawaii

Filling Steyr AP Cylinders ?

Post by Gwelo »

Does anyone have/use one of the Best Fittings Steyr LP fill adapters? The description states that they are now “drilled through “ to allow for conventional bleeding of the charging system without the need to partly unscrew the reservoir whilst still under pressure.

https://www.bestfittings.co.uk/shop/fil ... l-adaptor/

I always get a little nervous while doing this, seems like a better idea.
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m1963
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Re: Filling Steyr AP Cylinders ?

Post by m1963 »

Yes. We use the BEST fittings adapters for both Steyr and Walther air guns. They work fine.

This is the Steyr adapter that allows you to unscrew with cylinder without pressure on the threads-

https://www.bestfittings.co.uk/shop/fil ... l-adaptor/
Gwelo
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Joined: Thu Jan 19, 2012 10:14 pm
Location: Hawaii

Re: Filling Steyr AP Cylinders ?

Post by Gwelo »

m1963 wrote: Mon Jan 20, 2025 12:59 pm Yes. We use the BEST fittings adapters for both Steyr and Walther air guns. They work fine.
Just to be clear, you can bleed the line pressure first and then unscrew the cylinder under no pressure?
Is your setup similar to mine? I have the Steyr supplied fill probe.
SteyrFill.small.jpg
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m1963
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Re: Filling Steyr AP Cylinders ?

Post by m1963 »

The cylinder unscrews, unpressurized, due to the design of the adapter. Less loss of air.

In re setup...No, we also use a pressure release valve in-line.
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j-team
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Re: Filling Steyr AP Cylinders ?

Post by j-team »

All this is rather over complicated when you can screw the Steyr Adaptor directly into the DIN thread of the SCUBA tank.

It's worked for me for the last 30ish years!
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m1963
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Re: Filling Steyr AP Cylinders ?

Post by m1963 »

We have many different shooters using many different fill adapters. Some have QD adapters, as well. It is quite different for one shooter, using one brand of airgun, for certain.
Gwelo
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Joined: Thu Jan 19, 2012 10:14 pm
Location: Hawaii

Re: Filling Steyr AP Cylinders ?

Post by Gwelo »

Not everyone fills from a bottle or tank. I use one of the cheap Chinese compressors straight to the air cylinder. No trip to the dive shop!
Compressor.small.jpg
mus
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Joined: Fri Apr 07, 2023 4:24 am
Location: Gelderland, the Netherlands

Re: Filling Steyr AP Cylinders ?

Post by mus »

If you can bleed the hose of that compressor there's no reason why you shouldn't use one of the BF adaptors with a foster connection, like so:
BF_adapter (Small).png
msmith44
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Joined: Tue Mar 25, 2025 3:29 pm

Re: Filling Steyr AP Cylinders ?

Post by msmith44 »

Gwelo wrote: Mon Jan 20, 2025 3:38 pm
m1963 wrote: Mon Jan 20, 2025 12:59 pm Yes. We use the BEST fittings adapters for both Steyr and Walther air guns. They work fine.
Just to be clear, you can bleed the line pressure first and then unscrew the cylinder under no pressure?
Is your setup similar to mine? I have the Steyr supplied fill probe.

SteyrFill.small.jpg
What is the name of the part that connects to the Styer fill? Does Best Fittiings carry it?

Thanks.
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m1963
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Re: Filling Steyr AP Cylinders ?

Post by m1963 »

Are you asking about the QD (quick detach) quick coupler....

https://www.bestfittings.co.uk/shop/qui ... pler-plug/

or the DIN female adapter?

https://www.bestfittings.co.uk/shop/fil ... -bsp-male/
msmith44
Posts: 4
Joined: Tue Mar 25, 2025 3:29 pm

Re: Filling Steyr AP Cylinders ?

Post by msmith44 »

m1963 wrote: Wed Mar 26, 2025 2:31 pm Are you asking about the QD (quick detach) quick coupler....

https://www.bestfittings.co.uk/shop/qui ... pler-plug/

or the DIN female adapter?

https://www.bestfittings.co.uk/shop/fil ... -bsp-male/
Both. Thanks I ordered the two parts.
msmith44
Posts: 4
Joined: Tue Mar 25, 2025 3:29 pm

Re: Filling Steyr AP Cylinders ?

Post by msmith44 »

msmith44 wrote: Fri Mar 28, 2025 1:22 pm
m1963 wrote: Wed Mar 26, 2025 2:31 pm Are you asking about the QD (quick detach) quick coupler....

https://www.bestfittings.co.uk/shop/qui ... pler-plug/

or the DIN female adapter?

https://www.bestfittings.co.uk/shop/fil ... -bsp-male/
Both. Thanks I ordered the two parts.
How long should it take to fill a LP50 cylinder using a AirVenturi Rovair Compressor? Is 15 minutes too long to even get an indication on the fill pressure?

Thanks for any advice on this.

Marvin Smith
Gwelo
Posts: 253
Joined: Thu Jan 19, 2012 10:14 pm
Location: Hawaii

Re: Filling Steyr AP Cylinders ?

Post by Gwelo »

My compressor shown above takes 80-90 seconds to fill my Steyr LP50 standard cylinder from 70 to 200 bar. Not familiar with your AV compressor but something seems amiss 🤔.
thirdwheel
Posts: 215
Joined: Sat Feb 08, 2014 2:16 pm
Location: England

Re: Filling Steyr AP Cylinders ?

Post by thirdwheel »

The best fitting adapter works very well as you loose much less air as you manically unscrew it as fast as possible and the threads are no longer under high pressure as you screw the cylinder off.
mhkhung
Posts: 50
Joined: Tue Apr 27, 2010 9:38 pm

Re: Filling Steyr AP Cylinders ?

Post by mhkhung »

I got this cheap compressor but unfortunately it's DOA.. won't start compressing at all and I am considering hacking it..
Gwelo wrote: Mon Jan 20, 2025 6:14 pm Not everyone fills from a bottle or tank. I use one of the cheap Chinese compressors straight to the air cylinder. No trip to the dive shop!

Compressor.small.jpg
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