The Alloy Valve Stockist is a premier European alloy valve stockist and distributor of valves made of exotic alloys. Alloys: As a valve supplier, we keep duplex, super duplex, alloy 20, monel, hastelloy, inconel, incoloy, titanium and tantalum, 904L, zirconium, uranus, 254 SMO, 6Moly (6 Mo), nickel, copper, aluminium-bronze (NAB or alibronze) valves in stock, and can also ...