Paul Hoover, Owner/Winemaker
Still Waters Vineyards

Winery Equipment Testimonial:

"Upgrading your winery from 1000 cases per year to 3000 to 5000 can be a daunting task. The choices in winery equipment, capacity and price vary all over the place.  The great thing about Ryan is, having been a wine maker for years, he knows how to design things from start to finish. When I harvested my first ten tons of the year at 6:30 a.m., Ryan and his staff were there making sure everything was working correctly. I knew I had made a good decision."

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Filter Pads 40x40

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Filter Pads 40x40
Filter Pad


Filter Pads 40x40:  
Our Micron ratings are as follows:

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40cm x 40cm Filter Pads
  • Filter sheets (pads) are the most efficient and most economical means. They are between 1/8 to 3/16” – 3 to 4 mm – thick and consist of a blend of refined cellulose fibers, powdery filter aids, e.g. diatomaceous earth and/or perlite. As a general rule: the more filter aids the better the retention. An inert resin is added to provide wet strength; and – depending on the type of resin – also to create a positive charge or “zeta potential”. This positive charge enhances the retention of small negatively charged particles / micro-organism.
  • The typical depth filter sheet has a dirt holding capacity of about 4 Liters (1 US gal) for a square meter (abt. 11 square feet) of filter area. In process filtration, depth filter sheets are inserted into plate to plate filters (plate filters) which allow the formation of large surface areas within a relatively small footprint. 
  • Depth filters reach their end of service life when their inner matrix is loaded with “dirt” particles. Indicators are the rise of the differential pressure between inlet (=dirt) and outlet (=filtrate) side; and the decreased flow rate. 
  • The efficiency of a depth filter is exhausted once the differential has reached certain key points: abt. 1.5 bar (22 psi) for sterilizing grades; 2.5 - 3 bar (45 psi) for clarifying grades. In certain applications a regeneration is possible.
  • Comes in packages of 25.

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