Keykeg vs Pin-lock quick disconnect (pin-lock QD: specs compared
Updated 05 September 2026.
5
specs differ
Keykeg and Pin-lock quick disconnect (pin-lock QD differ on 5 specs: designation, size / thread, fitting form, seals on, rating / role.
| Spec | Keykeg | Pin-lock quick disconnect (pin-lock QD |
|---|---|---|
| Designation | KeyKeg / DSI head | pin-lock QD, MFL or barb tail |
| Size / thread | 5/8" BSP beer and gas dispense ports; DSI probe for KeyKeg valves | locates on the post pins; tail is 1/4" MFL (7/16-20 UNF) or a 1/4"/5/16" barb |
| Fitting form | single-probe keg coupler, KeyKeg valve | notched quick disconnect |
| Seals on | flat washer on each threaded dispense port | O-ring seals over the post; the tail seals by flare or clamp |
| Rating / role | the coupler for one-way KeyKeg and DSI-valve kegs, common in craft and cider | the pin-lock keg connector; taller than a ball-lock QD |
Questions and answers
How do Keykeg and Pin-lock quick disconnect (pin-lock QD compare?
Keykeg and Pin-lock quick disconnect (pin-lock QD differ on 5 specs: designation, size / thread, fitting form, seals on, rating / role.