Ductile Iron Wafer Knife Edge Gate Valve -- GGG40 / Cast Iron
Supreme Valves' heavy-duty Ductile Iron Wafer Knife Edge Gate Valve (Uni/Bi-Directional). Wafer semi-lugged design in high-strength Ductile Iron GGG40 / Cast Iron body with a stainless steel gate (AISI 304 / AISI 316) and a replaceable soft seat (EPDM, NBR, or metal-to-metal). Compliant with MSS SP-81 standard. Ideal for wastewater treatment, sewer networks, municipal grit, bulk solids, and cooling water piping. Handwheel operated standard, gear operated for DN300+.
Key Applications
Technical Specifications
Material Options
Carbon Steel
ASTM A216 WCB, A105, A350 LF2
Stainless Steel
SS304, SS316, SS316L, SS321, SS347
Alloy Steel
ASTM A217 WC6, WC9, C5, C12
Duplex Steel
F51, F53, F55, Super Duplex
Exotic Alloys
Monel, Hastelloy, Inconel, Titanium
Bronze & Brass
Gunmetal, Aluminum Bronze, Naval Brass
Purchase Options
Features & Benefits
High Performance
Designed for reliable operation under demanding conditions with minimal maintenance requirements.
Quality Assurance
Complete material traceability, mill test certificates, and compliance with international standards.
Wide Application Range
Suitable for Wastewater Treatment, Municipal Sewerage, Bulk Solids Handling, Water Utilities, Process Piping and many other industrial applications.
Expert Support
Technical assistance for valve selection, sizing, and application engineering from our experienced team.