Keystone Filter Division is one of the premier custom pleaters and cartridge manufacturers in the United States. They are also a major producer of industrial liquid filters and home drinking water filters.

Major Markets

• Deionized water
• Process water
• Food & beverage
• Membrane pre-filtration
• Bottled water
• Cosmetics
• Inks
• Photographic solutions
• Medical
• Nuclear power
• Aircraft
• High efficiency air filtration
• Military
• Home drinking water
• Chemical
• Pharmaceutical
• Semiconductor

Primary Products

• Custom pleating
• Custom cartridges
• Industrial liquid filters
• Drinking water filters
• Bag filters & housings
• Air filters
• UL listed HEPA filters
• Panel filters
• Filter cartridges
• Filter housings
• GIANT high flow housings, cartridges & bags

For additional product information please visit our Division Web Site or contact us at: