Awwa C520 [ CONFIRMED ]

Controlling the flow of thick paper stock and pulp.

When the new knife gate valves arrived, they looked different—sturdier, with a sharp, beveled edge designed to slice through solids like a guillotine. Elias explained to his team that these valves weren't just about strength; they were about . The AWWA C520 certification meant they had passed rigorous proof-of-design (POD) and production testing, ensuring they could handle the high-pressure demands of the city’s infrastructure for years.

The is an industry standard from the American Water Works Association that outlines the requirements for stainless-steel and ductile-iron body knife gate valves . These valves are specifically built to handle tough environments like wastewater, reclaimed water, and industrial slurries.