Yea \know answer just hopingf wrong.

Air bottle was wempty figured DA left it on,which it was. Hooked up another bottle and turned it on to check and air out regulagtor at pressure valve. Guessing poped some safety disc ior something.

rebuildable? Who and is it cost effective or just but another.

This is the only regulator I'll use and they are reasonably priced

https://preeceproducts.com/motorsports-regulators

Found few rebuild kits and cheap like 10 to 15 bucks but can not find name on thius one and model number missing half numbers.
Maybe K&R can tell me tomorrow.If can find rebuild kit think buy new one and rebuild this one another in case of.

Because I use CO2 for shifting only, I prefer preset regulators (100 psi) with a single gauge that indicates bottle pressure. My system will maintain pressure for weeks on end after turning the CO2 bottle off. This indicates the system is free from leaks.

Haver shifter,sle(if use) primer solenoid and option for chute operation.

Also use 100 psi prest regulator but seems there is little plastic ball in regulator and oine in this one is deformed like was in worng place at wrong time. Can buy new one on amazon for 50 bucks and may. Would like to rebuild this one if can find out what to order.

Has to be a way to fix this one. I ordered new one. Just hard to believe that this little plastic POS that is chipped or something. Hard to believe yhou just chunck all of thios machined brass parts because of one piece of plastic. Hell 2 o-rings and that piece of plastic are about only thing that can go bad,

Now gthat I have been told not repairable and just trash it I am GOING TO FIX it do not cafre what it takes. Not subborn but very determined.