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> Keg Post Conversions, Ball-Lock to Pin-Lock
cj in j
post Oct 18 2005, 07:21 AM
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Keg Post Conversions
Ball-Lock to Pin-Lock and Vice Versa

So, you just picked up some pin-lock threads and want to change the posts so you can use them in your system that's all set up for ball-lock disconnects (or vice versa). Well, you can thread ball lock posts onto pinlock posts, but only for very specific kegs. Here is a list of the post sizes (the part that is welded to the body of the keg), courtesy of Mike Dixon and the rec.rafts.brewing archives:

Firestone V Challenger, Firestone VI Challenger, Firestone Super
Gas 9/16"-18
Liquid 5/8" -18

Cornelius Spartan & Super Champion
Gas 19/32" - 18
Liquid 19/32" - 18

Cornelius R (pin lock)
Gas 19/32" - 18 (2-pin)
Liquid 19/32" - 18 (3-pin)

John Wood 85, Firestone Challenger
Gas 11/16" - 18
Liquid 3/4" - 18

Firestone A, Firestone R, John Wood RA, John Wood RC (pin lock)
Gas 9/16" - 18 (2-pin)
Liquid 9/16" - 18 (3-pin)

The Cornelius Spartan & Super Champion (balls) will interchange with the
Cornelius R (pin), also in older models, I am pretty sure that the
Firestones A, R (pin) will interchange with the Cornelius ball.

Firestone V, VI, Challenger, and Super Challenger (ball) posts will
interchange on the gas, but not on the liquid.
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