Centerflag Dynaflow O-ring rebuild list?

[russc]

Anyone know what O-rings are needed to rebuild a Centerflag Dynaflow regulator? My on/off finally gave up the ghost and I figure it's probably time to refresh the whole thing.

[scottieb]

Interested. I've got one in need of a rebuild as well.

[ford]

Sub'd

[Sharkpocalypse]

Necro-ing this thread because I rebuilt mine a while back and just had a chance to test it earlier today. Other than a bad seal on a new fill nipple I bought, everything seemed to work fine and I retained all my appendages. That said, this is what I used:

3 x 008 Urethane 90 D - On/Off Seals
1 x 012 Urethane 90 D - Piston O-ring
1 x 019 Buna-N 70 D - Body Seal
1 x 017 Buna-N 70 D - Front cap seal

So long as you don't need a new relief seal or valve pin, they're pretty simple to get running again.

[Dusty Bottoms]

Do the relief seal and valve pin have any commonality to the Automag or Air America reg seals and valve pins?

[Sharkpocalypse]

I don't believe so. From what I saw/remember reading the Dynaflow pins are made of milled down Kevlar and seat against the inside of the body itself, so unless you know a bored machinist I'd say it's unlikely. I guess you can always try and see if you can get something to fit. As for the relief seal, it looked like a 1/16 x 3/16 Buna 70D disk, so not impossible to find or replicate, but probably not the easiest either. I'm not 100% on those measurements, though. This Warpig article on the Hyperflow has photos of the thing in various stages of disassembly. As far as I can tell, the Hyperflow and Dynaflow were pretty much identical on the inside.

http://www.warpig.com/paintball/technical/regulators/centerflag_420_201/index.shtml

[ford]

My horde of old hyperflow/dynaflow regs thanks you

[russc]

Seriously. Nothing out there like these things, glad they live on.

[MrKittyCatMeowFace]

My horde of old hyperflow/dynaflow regs thanks you

Any working and for sale?

[anson]

MrKittyCatMeowFace I just bought one of these
https://www.ebay.com/itm/Centerflag-...p;_trksid=p234 9624.m46890.l49286&mkrid=711-127632-2357-0

[MrKittyCatMeowFace]

MrKittyCatMeowFace I just bought one of these
https://www.ebay.com/itm/Centerflag-...p;_trksid=p234 9624.m46890.l49286&mkrid=711-127632-2357-0

I need a 4500psi version unfortunately

[anson]

I'm no expert but I'm sure the only difference is the burst disc. I got some different plans for mine. I'll share once I get it finished.

[ford]

On the hyperflows the 201s were stainless and rated for 4500. The 301s, aluminum ones were 3k. Though I know of at least one 301 in my shop back in the day that was used with a 45/4500 tank

the dyanflows I believe are 4500 rated and aluminum.