Keystone filters, cartridges, and filter housings are designed for industrial and residential air and liquid filtration applications. The company is a major supplier to original equipment manufacturers (OEM) and provides innovative solutions through the development of new filtration products for difficult industrial air and liquid applications and potable water applications. Keystone provides products to many high end customers including the United States military and the nuclear and aircraft industries.


2385 North Penn Road
Hatfield, PA 19440
Phone: 215-822-1963
Fax: 215-997-1839
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