Sanke L coupler (type L vs Restrictor Plate: specs compared
Updated 05 September 2026.
5
specs differ
Sanke L coupler (type L and Restrictor Plate differ on 5 specs: designation, size / thread, fitting form, seals on, rating / role.
| Spec | Sanke L coupler (type L | Restrictor Plate |
|---|---|---|
| Designation | type L, 5/8 BSP ports | 5-hole restrictor plate |
| Size / thread | 5/8" BSP (7/8"-14) beer and gas ports, L-system probe | internal disc, typically with five small holes, sized to the stout faucet body |
| Fitting form | single-probe keg coupler | internal flow-restricting disc |
| Seals on | flat washer on each threaded port | sits captive inside the stout faucet, not a threaded joint |
| Rating / role | the less common L-system standard | the part that de-gasses nitro beer as it is forced through its small holes |
Questions and answers
How do Sanke L coupler (type L and Restrictor Plate compare?
Sanke L coupler (type L and Restrictor Plate differ on 5 specs: designation, size / thread, fitting form, seals on, rating / role.