12 Gram Automag Check Valve Suggestions

[BatterSkull]

I'm building an automag classic pistol that runs off of 12 grams and I'm looking for advice. If I used an ICD lever changer in a vertical asa, how could I keep pressure in most of the line during changes to increase efficiency? I was thinking of building a hardline with a check valve but it looks like I'd need to use 1/4" tubing with swagelok fittings and space is limited. The ICD lever changer has a conical recess in the asa portion (pictured poorly) that could seat a ball bearing but I'd worry about the "seat" feeding aluminum bits into the valve and also not sealing. Thanks for any help

[Chuck E Ducky]

I know you can get drop in ones for the CCI buckets. there are simple solutions using pen springs and ball bearings/ Teflon ball. I have a kit that Monkey something made it’s basically a reg seat style material and a pen spring.

You could likely make one for the ICD very similar fairly easy. But I haven’t seen anything off the shelf.

[DieManInTheRough]

https://www.mcarterbrown.com/forum/p...k-valve-source

[river031403]

https://www.mcarterbrown.com/forum/p...k-valve-source

Links to one of my pistol mag builds..I miss it lol maybe 2013-2016 ish

[BatterSkull]

I'll try the Teflon ball route. The disk won't fit in the cone shape seat of the changer. If that doesn't work I'll get a cci bucket changer

[Jsc5150]

There are HK fill nipples with included springs that make good check valves. I’m using them to make single shot dueling pistols without onboard tanks or 12ies

[Chuck E Ducky]

What if you printed something to hold the sealing surface and spring. On the Phantom ASA it has a pin that depresses a tank pin. So the spring sits on that and keeps it all centered.

I guess you could mod a valve into the bonnet of the ICD

[Chuck E Ducky]

I bet a self centering cone shaped pin that matches the ID of that hole in the ICD. Make it hold like a Phantom Cup seal for the sealing surface and hold a spring on the back side.

Drop it in screw it in against the ASA should do it. Might even get away with a bunna oring as a sealing surface if you can keep in centered with a good design. Not sure how well Printed products hold up to the CO2 pressure/ abuse,

[trashcollector]

Could you just double up o-rings? The outer diameter o-ring centering the smaller, thicker inner o-ring as the BB sealing ring.
I just used a 005 o-ring, a 0.177 bb, and a spring to seal a CCI 12 gram changer from the hyperlink above. I didn’t have a tapered surface to deal with though.

[RedLeaderSB]

Looking into it for an ICD lever

[BLachance75]

If you get that working I'd be interested in one

[BatterSkull]

This looks promising

[Carp]

Would something like an Ion detent work for the shape and size? I saw these and thought of this thread.