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JG6 vs Mini CO2 regulator (cartridge) (5/8-18 inlet: specs compared

Updated 05 September 2026.

6
specs differ

JG6 and Mini CO2 regulator (cartridge) (5/8-18 inlet differ on 6 specs: designation, size / thread, fitting form, seals on, rating / role, tube od.

SpecJG6Mini CO2 regulator (cartridge) (5/8-18 inlet
Designation6 mm OD5/8-18 inlet, 1/4" MFL out
Size / thread6 mm OD tube5/8-18 UNF inlet for a 74g threaded cartridge; 1/4" MFL (7/16-20 UNF) or 1/4" FFL outlet
Fitting formpush-fit collet, metriccompact cartridge-fed CO2 regulator
Seals onsingle O-ring plus a stainless collet grab-ringcartridge seat at the inlet; flare face at the outlet
Rating / roleJohn Guest Speedfit metric fittings for 6mm OD tube; tube OD within 0.1mm of nominala small regulator that runs off a 74g threaded CO2 cartridge instead of a full tank
Tube OD6 mm

Questions and answers

How do JG6 and Mini CO2 regulator (cartridge) (5/8-18 inlet compare?

JG6 and Mini CO2 regulator (cartridge) (5/8-18 inlet differ on 6 specs: designation, size / thread, fitting form, seals on, rating / role, tube od.

Compared here

John Guest 6mm push-fit (6 mm OD)Mini CO2 regulator (cartridge) (5/8-18 inlet, 1/4" MFL out)