K80 2V Brewing System – 86.5L Two-Vessel Stainless Brewhouse

86.5L Two-Vessel Brewing System.

5.7kW heating. Dual pump hydraulics. Full stainless tri-clamp architecture.

Designed operating range

• Nominal kettle capacity: 86.5 L
• Recommended batch size (into fermenter): 55–70 L
• Maximum practical knockout volume: 75–78 L
• Minimum efficient batch size: ~40–45 L

Below 45 L the system works, but heating dynamics and pump routing are no longer optimal. The geometry is designed for stable operation in the 60–70 L range.

Grain load & mash performance

• Grain capacity: 15–25 kg
• Recommended mash thickness: 2.6–3.2 L/kg
• Maximum practical grain load: ~28 kg with controlled recirculation

Example: 22 kg grain at 2.8 L/kg → approx. 61.6 L mash volume.
Dual MP40 pumps provide stable recirculation within this range.

System is not designed for ultra-thick mash regimes below 2.3 L/kg.

Heating performance

• 1 × 2.2 kW tri-clamp heating element
• 1 × 3.5 kW tri-clamp heating element
• Total installed power: 5.7 kW
• 2 × Inkbird C236T (16A EU plug)

Requires two independent 16A electrical circuits.

Estimated heat-up time (60 L water, 15°C → 100°C):
≈ 30–40 minutes depending on ambient temperature.

Boil stability at 65 L:
Strong rolling boil achievable. Evaporation rate approx. 6–8% per hour depending on environment.

Hydraulics & flow

• 2 × MP40 65W pumps (continuous duty capable)
• Sanitary 1.5" tri-clamp architecture
• 11 × tri-clamp quick-connect fittings
• Integrated stainless manifold

Dual-pump configuration enables:

• Mash recirculation
• Sparge and transfer routing
• Whirlpool and knockout preparation
• CIP recirculation without disassembly

MP40 pumps provide sufficient head for counterflow chilling and transfer into standard-height fermenters.

Cooling performance

• Counterflow wort chiller (single-pass)
• Optimized for 55–70 L knockouts

At groundwater temperature 10–15°C:
Single-pass cooling to 18–22°C achievable with controlled flow rate.

Knockout time (65 L): approx. 8–15 minutes depending on water pressure and delta-T.

Power & installation requirements

• 2 × independent 16A circuits
• Stable water supply for counterflow chiller
• Flat, load-bearing surface (filled system ≈ 120–150 kg)

Technical summary

• System type: Two-vessel (Mash + Boil)
• Nominal kettle volume: 86.5 L
• Working batch range: 55–70 L
• Total heating power: 5.7 kW
• Pumps: 2 × MP40 65W
• Cooling: Counterflow, single-pass
• Architecture: Full stainless tri-clamp
• Material: SS304