WATER VALVEType 563 Aqua butterfly valve is designed specifically for water applications. With its low-cost PVC material and EPDM seal, this new specialty valve is priced to provide a very economical product for non-chemical water applications. Suitable industrial uses include water processing and filtration systems. The valve is available in sizes from 2 to 12 in. with either a lockable hand lever or with a gear-operated wheel.