Preval is named after The Precision Valve Corporation, a global leader and manufacturer of valve technology based out of Yonk ... ers, New York. Preval is a division of Chicago Aerosol,with U.S. based aerosol contract filling and custom formulation facilities. Preval is built to deliver consistent, professional spray results. Preval products are sold in almost every hardware and paint store in America and into industrial distributors worldwide. Made in Coal City, Illinois. The Sprayer and vFan Portable Airbrush System fills a void in all of the Coatings Industries from Industrial, Contractor; and Consumer Users. By simply connecting an aerosol can to our Delivery system any Coating Users can professionally deliver unadulterated, fine finishes, touch-ups and coatings for small surfaces. read more