Red wine mash pressure flooder FD-DF

Speidel’s pressure flooder is a mash fermentation tank for pressureless applications with air impulse blast pipes for a gentle and smooth re-circulation. Over the last years a constant development of quality-improving technologies to obtain a possibly high aroma and lots of colour from the berries has taken place. In the meantime the fundamental understanding of the direct contact of wine with aerial oxygen has been defined in a new way. Once being partly defined as 'the enemy of wine', air can however – at least in certain phases of the fermentation and maturation process – cause positive effects on the wine.

This is why we at Speidel have developed a mash fermentation tank that penetrates and gently mixes the emerging marc by means of air jets that use purified pressurised air during the process of fermentation. This way we combine a gentle type of re-circulation with intensive air contact during the main fermentation phase.
The tanks are equipped with 4 lateral air impulse jets that are safeguarded by non-return valves.

An electronic control system regulates the intervals of the injections. This way injections that mix the marc cake can be released in specific time intervals during the mash fermentation. For approx.
15 seconds jets release air at an air-pressure of 6 to 8 bar. As a result, the CO2 is released from the grapes, thus leading to a regroupment of the mash.

The mash is washed over with the wine and mixed at the same time. The grapes end up in a new position which allows for a better extraction of both colour and aroma. The air released into the tank can escape through valves at the tank’s top. The pressure flooder is an economic option for the gentle mash fermen­tation of top-quality red wines with intense fruit shades and early mature character. We recommend to additionally equip this system with the flooder option.