The FBE Coated Swing Check Valve is a corrosion-resistant, non-return valve designed specifically for fire fighting applications, featuring a 4-inch ductile iron body with fusion-bonded epoxy (FBE) coating for superior protection against aggressive water environments and soil burial conditions. Rated for 300 PSI working pressure with flanged end connections per British Standards, this valve ensures reliable backflow prevention in fire protection systems while maintaining smooth, unobstructed flow when open.