Aluminium Bronze Butterfly Valve

An aluminum bronze butterfly valve (or Nickel-Aluminum Bronze / NAB butterfly valve) is a lightweight, compact quarter-turn rotary valve specifically engineered to withstand the highly destructive, corrosive, and erosive forces of seawater and high-salinity process media. Cast from premium copper-based alloys containing 9%–12% aluminum along with nickel and iron (such as ASTM B148 grades C95800 or C95500), this valve delivers an exceptional tensile strength exceeding 650 MPa and features a dynamic, self-repairing alumina-rich protective oxide layer that immediately reforms when scratched to prevent pitting and crevice corrosion. Conforming to standards such as API 609, EN 593, and ASME B16.34, these specialized valves are critical specifications in naval marine vessels, offshore drilling platforms, and coastal desalination facilities, allowing maritime designers and procurement managers to eliminate galvanic corrosion and maximize operational uptime by importing certified aluminum bronze butterfly valves directly from leading manufacturers in China via our advanced B2B commercial platform.