SIGMA

Purchasing a wine press is one of the most important decisions for your business to make. You are going to spend years working with this piece of equipment. The press is the very heart of grape processing. For that reason, you should be satisfied with nothing but the best in the selection of your press.

The SIGMA pneumatic press is the flagship of the WILLMES presses. It is possibly the best press in the world. Thanks to its patented flexible juice channels made from highly developed membranes, it boasts press properties unmatched by any other grape press.

Must of the highest quality is the foremost aim for your wine!

With the WILLMES SIGMA press, you invest in outstanding juice quality, durability, profitability and efficiency during harvest, thanks to its patented FLEXIDRAIN® vertical juice channels.

SIGMA makes full use of the latest oenologic findings and permits the production of highquality wines.

Proven in practice

The FLEXIDRAIN® technology is the product of a joint development by winegrowers and WILLMES experts. The technology has been used in practice since 2001. Since 2003, FLEXIDRAIN® has been used successfully in serial production. Hundreds of winegrowers across the world work with this press.

Outstanding juice quality

The FLEXIDRAIN® channels ensure the optimal pre-juicing of your mash. The standard press version allows you to press all kinds of materials. It is suitable for the processing of whole clusters, but also of fermented red wine mash. For particularly difficult crops, you can simply retrofit customised versions with special mesh sizes.

The hard-wearing FLEXIDRAIN® membrane is flexible. For that reason, it is almost impossible for the juice channels to become clogged. In addition, the juice contains significantly less solids (= turbidity) and fine solids.

Quick and easy installation and removal – without tools

Removal of the juice channels is simple. No tools are required. There is with most of the models no need to climb into the inside of the press.

FLEXIDRAIN® juice channels are hard-wearing with a life expectancy of three to five years, depending on usage.

Optimal pre-juicing – low turbidity level

FLEXIDRAIN® juice channels permit optimal juice extraction thanks to the large juicing surface. The vertical

juice channels achieve improved pre-juicing levels of up to 50%. At the same time, the fine solids released

by the pumps are ‘filtered out’. The membrane encloses the grapes from all sides, and the distance the juice

travel is 50% shorter on average than in conventional wine presses. The marc crumbles more gently with

only a few, gentle rotations.

Easy cleaning and greatest hygiene

Cleaning the SIGMA press is particularly easy thanks to the FLEXIDRAIN®. Coil springs and juice channels are easy to remove in a few steps. A special cleaning program as well as the CIP option (clean in place) allow automated intermediate cleaning.

The special structure of the membrane makes cleaning the appliance quick and hygienic. No more blocked

and clogged juice channels. No need to climb into the press tank for cleaning.

Energy efficiency

Vertical juice channels in the tank make it possible to operate at a lower pressure of maximum 1.6 bar in order to achieve maximum yield. Up to 80% of the juice can be extracted at an operating pressure of less than 0.2 bar. This means that you need less compressed air and thus less energy. This is kind to the environment as well as to your wallet.

The advantages of the SIGMA series at a glance

■ Vertical juice channels with FLEXIDRAIN® technology – patented and exclusive to WILLMES presses

■ Manufactured completely from stainless steel

■ Better pressing results, particularly for difficult crops

■ Easy to clean, thus greater cost efficiency and better hygiene

■ Better must quality: less lees, no fine solids

■ Low energy and compressed air consumption

■ Very flexible and easy-to-use pressing programs, optionally self-optimising

■ Can be used to process small quantities as well as ice wine

■ Filling position = pressing position

■ Central juice drain, automatically controlled juice collection outside of the tank

■ Spare-part guarantee for all pneumatic presses