Plate and Frame Filter for Beer Polishing

A plate and frame filter — also called a square panel filter or sheet filter — uses flat filter pads clamped between a series of plates and frames to remove fine haze, residual yeast, and micro-particulates from beer. Unlike bag filters (coarse pre-filtration) or diatomaceous earth filters (bulk clarification using DE media), the plate and frame filter is typically used as the final polishing stage immediately before filling, delivering the highest level of visual clarity and stability to the packaged beer. It uses replaceable filter pads rather than specialized media, making routine maintenance straightforward.

Filter sheet grades for plate and frame filters are generally categorized from coarse (for pre-filtration of heavily turbid beer) through fine clarification to polishing and sterile grades (for microbiological stability). The appropriate grade depends on the beer style, upstream filtration stages already in place, and the target visual clarity level. ZR BREW supports customization of the filter sheet grade configuration. Buyers are encouraged to provide their beer type, current filtration chain, and clarity target when submitting an inquiry, so ZR BREW’s technical team can recommend the optimal sheet grade selection.

In a multi-stage brewery filtration chain, the diatomaceous earth (DE) filter typically handles the bulk clarification stage — removing the majority of yeast cells and protein haze using diatomite media under pressure. The plate and frame filter then operates as the final polishing stage downstream of the DE filter, using fine or polishing-grade filter sheets to capture any remaining micro-haze and particles before the beer enters the keg filling machine. Using both systems in sequence extends the service life of the filter sheets and produces a more consistently bright finished product.

Yes. ZR BREW supports customization of the plate and frame filter configuration, including the number of filter frames (which determines the total active filtration surface area), filter sheet grade, material grade (SUS304 or SUS316), inlet/outlet sizing, and connection type (tri-clamp, threaded, or flanged). Buyers with higher production volumes or more demanding clarity requirements may benefit from a larger frame count. Please share your target flow rate, beer type, and production schedule when submitting a configuration inquiry.

Before placing an order, buyers should confirm: (1) beer type and target visual clarity level; (2) upstream filtration stages already in use (e.g., bag filter, DE filter) to determine appropriate sheet grade; (3) required filtration flow rate and maximum operating pressure; (4) preferred number of filter frames (filtration area); (5) inlet/outlet pipe diameter and connection standard (tri-clamp, threaded, or flanged); (6) material grade preference (SUS304 or SUS316); (7) downstream equipment — specifically the single-head keg filling machine model; (8) local power supply voltage and phase for the integrated pump; and (9) available floor space and preferred installation configuration. ZR BREW’s engineering team can provide pre-order technical guidance.