Prozone Ozone Check Valve [1/4" Barb x 1/4" Barb] [Viton] is an ozone system check valve designed for 1/4 inch barb connections in compatible Prozone and related water treatment installations. A check valve helps control flow direction and can protect ozone equipment from water backing up into tubing or components where it does not belong. The Viton material callout is important for ozone applications because ozone exposure can be harsh on some standard materials. This part is useful when replacing a brittle, clogged, leaking, or questionable valve during ozone system maintenance. Before ordering, confirm barb size, tubing size, flow direction, and compatibility with the existing ozone generator or injector arrangement. 1/4 inch barb x 1/4 inch barb check valve for compatible ozone systems Viton construction is suited for ozone-exposed water treatment applications Helps reduce the risk of unwanted backflow into ozone tubing or equipment Match flow direction and part number 20214 during replacement Useful for service when the old valve is leaking, blocked, or degraded