1. Zhongcheng Valve Group – Established 1998 in Yongjia's Oubei五星 Industrial Zone, 13,000 m² facility. Specializes in knife gate valves, slurry valves, and gate valves. Products solve abrasion challenges with solid powders and slurry media in power, petrochemical, paper, sewage treatment industries. Certified ISO9001, CE, TS. Website: [Contact via industry channels] -2

  2. Anhui Tongdu Fluid Technology – Established 1993, listed company (stock code 832250). Produces ultra-large diameter DN2200mm metal-sealed knife gate valves, one of few manufacturers capable of producing this size. Applications in municipal water, sewage treatment, petrochemical, mining industries. Website: [Contact via industry channels] -7

  3. Tanggong Valve Group – Offers comprehensive knife gate valve range for slurry and solid media applications. Materials: cast iron, carbon steel, stainless steel, titanium, nickel. Pressures up to 42 MPa, diameters up to DN4000mm. Website: https://www.tanggongvalve.com

  4. Suzhou Neway Valve Co., Ltd. – Leading Chinese valve manufacturer offering knife gate valves for mining, pulp & paper, and wastewater treatment applications. API certified with global project experience. Website: https://www.newayvalve.com

  5. Shanghai Valve Factory Co., Ltd. (SVF) – Century-old manufacturer offering knife gate valves for industrial applications requiring isolation of abrasive media. Website: https://www.svf.sh.cn

  6. Chaoda Valve Group Co., Ltd. – Founded 1984, offers metal-sealed and soft-sealed knife gate valves for slurry handling applications. Certified ISO 9001, API 6D, CE/PED. Website: https://www.chaodavalve.com

  7. Jiangsu Shentong Valve Co., Ltd. – Publicly listed manufacturer specializing in knife gate valves for metallurgy, mining, and chemical industries. Metallurgical valves hold 70%+ domestic market share. Website: http://www.stvalve.com

  8. DERVOS VALVE – Offers knife gate valves in carbon steel, stainless steel, and alloy steel for abrasive media applications. API6D, CE, ISO9001 certified. Website: https://www.dvsvalve.com

  9. VALTECCN Valve – Formerly Tianjin TKT Valtec, offers knife gate valves from 2" to 48" in various standards. Serves power, petrochemical, water treatment, mining industries. Website: [Contact via industry channels]

  10. Ningbo Pntek Technology Co., Ltd. – Manufacturer of industrial valves including knife gate valves for slurry and wastewater applications. 90% on-time delivery. Website: [Contact via industry channels]