- New
The Petersen Molding 25746 drain valve, manufacturer reference 18-958AW, is designed for fresh water tank drainage in compatible RV and marine plumbing systems. Made of durable polypropylene plastic with UV stabilizer, it features a 1/2-inch hose-barb connection and an integrated mounting flange. Its Arctic White finish blends with many RV exterior and plumbing components. It is suitable for replacing compatible standard fresh water tank drain valves. Check the mounting opening, flange dimensions and hose size before installation.