Just the mash tun: body, lid and grain door. Bring your own false bottom and fittings.
The BrewTaurus K80 Mash Tun — vessel only — is a 93.3 L mash tun in 304 stainless with a 200 × 280 mm grain door and 1.5" Tri-Clamp ports throughout. The false bottom and grain chute are sold separately. Pair it with the K80 HLT for HERMS, or with the K80 Boil Kettle for a two-vessel brew day. Spent grain leaves through the door, not over your head.
Vessel only — no false bottom, no fittings. You get the mash tun body, its stainless lid and the 200 × 280 mm grain door. The false bottom, grain chute and Tri-Clamp fittings (valves, clamps, gaskets, blind cap) are not included. Add the K80 False Bottom with its gasket to mash in it. Or take the K80 Mash Tun — Complete Set, which adds the false bottom, grain chute and fittings.
| Brim-full volume | 93.3 L |
|---|---|
| Max grain bill | ~26 kg at 2.6 L/kg · ~28 kg at 2.4 L/kg |
| Volume under false bottom | 5.4 L |
| False bottom height | 54 mm above the lowest point of the bottom |
| Grain door | 200 × 280 mm |
| Ports | all 1.5" Tri-Clamp |
| Empty weight | ≈13.5 kg (vessel only) |
| Material | 304 stainless · 1.2 mm wall · 1.0 mm lid |
| Guarantee | 2-year legal guarantee (EU consumer law) |
Grain, strike-water and false-bottom figures on this page assume the K80 False Bottom (sold separately).
How much grain fits
| Mash thickness | Max grain | Strike water |
|---|---|---|
| 2.4 L/kg (thick) | ~28 kg | ~67 L |
| 2.6 L/kg | ~26 kg | ~68 L |
| 3.0 L/kg (thin) | ~23 kg | ~70 L |
A 12 °P (OG 1.048) beer at 70 L into the fermenter needs ~15.7 kg. At maximum grain you reach ~18 °P (OG ~1.074) at 70 L. Strike water includes the liquor below the false bottom.
Built for real mash work
- Grain door 200 × 280 mm — gasketed, locked by a crossbar with a hand knob, hinged and fully removable. Drain, open, rake the grain out — easiest with the grain chute (sold separately). No lifting a wet grain bed.
- Made for the laser-cut 1.5 mm stainless K80 False Bottom (sold separately); runoff leaves through a centred 1.5" outlet in the dished bottom.
- Temperature port at 45°, 100 mm above the bottom seam, for a thermowell or probe.
- Recirculation return 50.8 mm below the rim · central 1.5" lid port for a CIP spray head.
- No heating port, by design. Hold mash temperature with HERMS (K80 HLT), RIMS or pre-heated strike water.
Ports & connections
| Port | Where | Job |
|---|---|---|
| Bottom outlet 1.5" TC | centre of the dished bottom | wort draw-off, drain |
| Recirculation return 1.5" TC | 50.8 mm below the rim | return over the grain bed |
| Temperature port 1.5" TC | at 45°, 100 mm above the bottom seam | thermowell or probe (not included) |
| Lid port 1.5" TC | centre of the lid | CIP spray head |
| Grain door 200 × 280 mm | front, at the bottom seam | spent grain out (grain chute sold separately) |
Dimensions
| Inner diameter | Ø450 mm |
| Body height (rim to bottom) | 609.4 mm |
| Height to rim | 759.5 mm |
| Overall height with lid | 809.4 mm |
| Width incl. handles | 563.7 mm |
| Leg footprint (centre to centre) | 296.5 × 296.5 mm |
| Grain chute reach (chute sold separately) | 241.8 mm |
| Wall / lid / leg | 1.2 mm / 1.0 mm / 1.2 mm |
What's in the box
- 93.3 L mash tun (SS304) · stainless lid with central 1.5" TC port · dished bottom + central drain
- 200 × 280 mm grain door with gasket (hinged + removable)
Not in the box — these come with the complete set
- Grain chute
- Laser-cut SS304 false bottom (1.5 mm) with perforated drain-protection stand
- 1× 1.5" TC elbow · 2× 1.5" TC butterfly valves · 4× 1.5" band clamps + 4× gaskets · 1× 1.5" blind cap
Also not included: heating elements, controllers, pumps, hoses/quick-connects, thermowell. Passivate before first use.
Add: K80 False Bottom · false-bottom gasket · grain chute. With all fittings: K80 Mash Tun — Complete Set. Build your brewhouse: K80 HLT (HERMS) · K80 Boil Kettle · K80 2V system · K80 3V system
Technical drawing
Download the K80 mash tun drawing (PDF)
Which K-Series size fits your batch
Same Tri-Clamp architecture in three sizes. Pick by the batch you want in the fermenter. Your size is highlighted.
| Size | Brim-full · inner Ø | Batch into fermenter | Max grain: malt pipe / mash tun |
|---|---|---|---|
| K40 | 48.1 L · Ø350 mm | 20–35 L | ~10.5 / ~13 kg |
| K80 | 93.3 L · Ø450 mm | 45–70 L | ~22 / ~26 kg |
| K220 | 225 L · Ø600 mm | 110–175 L | ~57 / ~64 kg |
FAQ
What does the complete set add?
The K80 Mash Tun — Complete Set adds the grain chute · laser-cut SS304 false bottom (1.5 mm) with perforated drain-protection stand · 1× 1.5" TC elbow · 2× 1.5" TC butterfly valves · 4× 1.5" band clamps + 4× gaskets · 1× 1.5" blind cap. Take the vessel only if you already have a false bottom and Tri-Clamp fittings, or want to pick your own.
How much grain does the K80 mash tun hold?
About 26 kg at a standard 2.6 L/kg mash, up to ~28 kg at a thick 2.4 L/kg (fly sparge). That brews a 70 L batch up to ~18 °P (OG ~1.074).
How much volume is under the false bottom?
5.4 L sits below the false bottom. The strike water figures on this page already include it.
Can I heat the mash tun directly?
No. It has no heating port. Keep the mash on temperature with a HERMS coil in the K80 HLT, a RIMS tube, or pre-heated strike water.
How does the spent grain come out?
Drain the tun, loosen the hand knob, swing the crossbar aside, open the door and rake the grain out into a bucket — the grain chute (sold separately) makes it cleaner. The door lifts off completely for cleaning.
Fly sparge or batch sparge?
Both work. The maximum grain figure assumes fly sparging; for batch sparging keep the grain bill lower so the sparge water fits under the rim.
Can I clean it in place?
Yes. Fit a 1.5" CIP spray head to the 1.5" lid port and recirculate cleaner with a pump strong enough to drive it, such as the MP-40RM.
Product photos may show a prototype or a different size; production units follow the manufacturing drawing.
Gravity figures assume 70 % brewhouse efficiency (65 % at maximum grain); your mill, malt and process will move them.