Duplex Stainless Steel 4A/5A/6A Wafer Check Valve, Double Plate Type

When backflow prevention is critical in aggressive chloride-rich environments, a standard check valve is a risk you cannot afford. Engineered for offshore, marine, desalination, and chemical processing applications, the wafer check valve is manufactured from duplex stainless steel (ASTM A995 4A/5A/6A) —offering exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking in seawater and high-chloride media.

The double plate design provides a compact, lightweight solution for spring-assisted, non-slam closing. The valve fits between PN10/16 or ANSI Class 150 flanges, reducing installation space and overall system weight compared to traditional swing check valves.