DN50-DN1200 Industrial Knife Gate Valve Cast Carbon Steel Stainless Steel for Sewage Mining Flange Connection
Full flow channel, low flow resistance, no medium retention
Multiple material options: Carbon steel WCB, 304 stainless steel
Hard seal & soft seal available, strong sealing performance
Wear-resistant stem, durable and not easy to jam
Wide application for sewage, mining, chemical and paper industry
Body material optional: WCB carbon steel, ZG1Cr18Ni9Ti, CF8 (304) stainless steel.:
WCB Stem adopts 2Cr13 / 304 stainless steel, high hardness, anti-rust and wear-resistant.
Various sealing types: Alloy hard seal, PTFE soft seal, adapt to different working conditions
Packing: V-type PTFE + flexible graphite ring, high temperature resistant and leak-proof.
Simple structure, light weight, easy to install, maintain and replace parts.
Good passing ability, effectively cut off slurry, sludge, powder and solid-liquid mixed media.
Corrosion resistant stainless steel model, suitable for acid and alkali corrosive medium.
Quick opening and closing, labor-saving operation, suitable for frequent switch use.
Strict factory inspection, reliable quality, compliant with industrial usage standards.









Qingdao Yida Tongtu Machinery Technology Co., Ltd., in the beautiful coastal city of Qingdao. Specializing in high-growth ventures such as valves and power equipment, the company is dedicated to providing comprehensive solutions for industries including petroleum, chemicals, and water utilities, empowering clients to grow and achieve success.
We are a cutting-edge trading enterprise specializing in one-stop industrial valve matching, deeply cultivating gate valves, globe valves, ball valves, check valves, butterfly valves, etc. Our main products include American standard API, German standard DIN, and Japanese standard JIS, suitable for various industries such as chemical, petroleum, gas, power, metallurgy, etc.
We selects qualified factories from the source, strictly controls product quality, adheres to the direct supply mode, and relies on the advantages of a streamlined and efficient team to achieve rapid implementation of customer demands. At the same time, we can provide customers with standard spot goods, non-standard customization, OEM, project batch matching, and a complete set of export documentation services, becoming a long-term stable valve procurement partner for customers with professionalism, reliability, and high cost-effectiveness.















Our mission is to offer "High Quality" & "Good Service" & "Fast Delivery" to help our clients to gain more profits.