Keykeg vs Mini CO2 regulator (cartridge) (5/8-18 inlet: specs compared
Updated 05 September 2026.
5
specs differ
Keykeg and Mini CO2 regulator (cartridge) (5/8-18 inlet differ on 5 specs: designation, size / thread, fitting form, seals on, rating / role.
| Spec | Keykeg | Mini CO2 regulator (cartridge) (5/8-18 inlet |
|---|---|---|
| Designation | KeyKeg / DSI head | 5/8-18 inlet, 1/4" MFL out |
| Size / thread | 5/8" BSP beer and gas dispense ports; DSI probe for KeyKeg valves | 5/8-18 UNF inlet for a 74g threaded cartridge; 1/4" MFL (7/16-20 UNF) or 1/4" FFL outlet |
| Fitting form | single-probe keg coupler, KeyKeg valve | compact cartridge-fed CO2 regulator |
| Seals on | flat washer on each threaded dispense port | cartridge seat at the inlet; flare face at the outlet |
| Rating / role | the coupler for one-way KeyKeg and DSI-valve kegs, common in craft and cider | a small regulator that runs off a 74g threaded CO2 cartridge instead of a full tank |
Questions and answers
How do Keykeg and Mini CO2 regulator (cartridge) (5/8-18 inlet compare?
Keykeg and Mini CO2 regulator (cartridge) (5/8-18 inlet differ on 5 specs: designation, size / thread, fitting form, seals on, rating / role.