Stout Faucet vs Tr21: specs compared
Updated 05 September 2026.
5
specs differ
Stout Faucet and Tr21 differ on 5 specs: designation, size / thread, fitting form, seals on, rating / role.
| Spec | Stout Faucet | Tr21 |
|---|---|---|
| Designation | 7/8"-14 shank mount, restrictor plate | TR21x4 (soda / SodaStream-style) |
| Size / thread | mounts on a 7/8-14 shank; carries a 5-hole restrictor plate behind the spout | TR21 x 4 mm pitch trapezoidal |
| Fitting form | flow-restricting beer faucet | trapezoidal cylinder valve, external |
| Seals on | coupling nut draws the faucet body onto the shank nose; the restrictor plate is internal | O-ring on the valve stem |
| Rating / role | the faucet that pours nitro stout, forcing beer through a restrictor disc to break out the nitrogen | small refillable soda-maker CO2 cylinders |
Questions and answers
How do Stout Faucet and Tr21 compare?
Stout Faucet and Tr21 differ on 5 specs: designation, size / thread, fitting form, seals on, rating / role.