[Robert]

Does anybody know the volume of a 5 gal corny filled right to the brim (e.g.  for purging, or when beer reaches the gas in a closed transfer)?

[hopfenundmalz]

Does anybody know the volume of a 5 gal corny filled right to the brim (e.g.  for purging, or when beer reaches the gas in a closed transfer)?

I have many Cornies from different manufacturers. They all hold slightly different volumes depending on type.

How do I know this? Running PBW solution or sanitizer from a completely full keg will slightly under fill, or slightly over fill the receiving keg.

I go by weight when filling, and make sure to purge the head space.

[Robert]

I don't have a scale that will do the trick.  My kegs are all old timers mfd. by Cornelius Corp.  Ballpark?  Just want to better approximate my 12.5ppm iodophor, and maybe better predict fermenter fill needed for keg plus losses.

[metron-brewer]

Next brew day, I'd fill one up then pour/pump it out into your Boil kettle and verify the volume. Then use the water for brewing.

[Robert]

Next brew day, I'd fill one up then pour/pump it out into your Boil kettle and verify the volume. Then use the water for brewing.

Now why didnt I think of that?   Thanks.

[The Beerery]

Why not just use a vessel your scale can handle, get the known volume, and fill the keg with it and add it up?

[Robert]

Why not just use a vessel your scale can handle, get the known volume, and fill the keg with it and add it up?

Even more precise.  Embarrassed I didn't think of this either. After all, this is how I calibrate kettles and make dipsticks! Thanks, guys!