Add to Cart Quick view SALE Magic Plastics Inc Check Valve, Magic, 2"s, Corrosion Resistant, 1/2 lb, Water $81.95 $42.95 The Industry's Only "Full-Flow" Corrosion Resistant Check Valve! Magic Plastics' Corrosion Resistant Back-Flow prevention check valve is the latest in innovative products. The "CR" Valve is... Add to Cart Add to Wishlist