
Durable Manual Pneumatic German Standard Self Sealing Knife Gate Valve for Gas. Zero Leakage Bi-Directional Seal: Bi-directional design with zero leakage and high differential pressure resistance. Wide Size Range: Available in sizes DN50-1200 (2''-48'') with multiple pressure ratings. Durable Resilient Seat: U-shaped resilient seat embedded in body reduces friction and prolongs life. Anti-Accumulation Design: No groove on valve seat prevents media accumulation and blockage. 3-Year Warranty: 3 years warranty for stainless steel products, excluding gaskets and broken parts. Flexible Customization: Customizable gasket, seat, actuator, and delivery time based on requirements. Industrial Application: Suitable for urban sewage, paper-making, mine slag, and industrial usage. Certified Manufacturer: ISO, CE, and PED certified with 15 years of manufacturing experience.