Oxygen or Air is injected into the wort through Bucher Denwel Injector, which splits the gas into microbubbles. The most efficient and instant saturation of the gas is achieved with only a minimal pressure drop, no gas loss and a fully hygienic design. No static mixer or sintered candles are needed. The injected gas can be cleaned and sterilised by micro and sub-micro sterile filters. An inline O₂ analyser continuously monitors the O₂ concentration. The PLC processes the output signal to control the O₂ dosing. A high precision control valve accurately adjusts the injection, avoiding any over-or under- aeration/oxygenation.

Brewing yeast needs oxygen to multiply. While insufficient aeration results in reduced yeast reproduction, over-dosing may cause the formation of undesired substances and wort foaming. Therefore, controlled wort aeration is required for a consistent fermentation rate and constant product quality. Designed for fast and accurate injection and dissolution of air or oxygen, Bucher Denwel provides a fully automated solution for continuous wort aeration.

Air addition: up to 15 ppm (P & T dependent)

O2 addition: up to 25 ppm (P & T dependent)

Pressure: operating 2 to 5 barg, 30 to 72 psig

Temperature: operating 0 to 15 °C, 32 to 60 °F

CIP: 2 to 5 barg, 30 to 72 psig; max. 90 °C, 200 °F; Steam 140 °C, 286 °F

Connection: Tri-clamp; other connections upon request

Dimensions: from Height 1,9 m, 6,2’; Width 2,0 m, 6,5’; Depth 0,6 m, 2’

Weight: from 100 kg, 220 lb

Material: Stainless Steel 304, EPDM, PSU, PP

Models: Aeration DASxxxA; Oxygenation DOSxxxA; Aeration and Oxygenation DOAxxx

D__050A DN 40 1½” 20 to 50 hl/h 9 to 22 gpm 18 to 42 bbls/h
D__075A DN 40 1½” 30 to 75 hl/h 14 to 33 gpm 26 to 63 bbls/h
D__100A DN 50 2” 40 to 100 hl/h 18 to 44 gpm 35 to 85 bbls/h
D__150A DN 65 2½” 60 to 150 hl/h 27 to 66 gpm 52 to 127 bbls/h
D__200A DN 65 2½” 80 to 200 hl/h 36 to 88 gpm 69 to 170 bbls/h
D__300A DN 80 3” 120 to 300 hl/h 53 to 132 gpm 103 to 225 bbls/h
D__500A DN 100 4” 200 to 500 hl/h 88 to 220 gpm 171 to 426 bbls/h
D__750A DN 125 5” 300 to 750 hl/h 132 to 330 gpm 256 to 639 bbls/h
D__A00A DN 150 6” 400 to 1000 hl/h 176 to 440 gpm 341 to 852 bbls/h