1. Anhui Tongdu Fluid Technology – Established 1993, listed company (stock code 832250). Offers air release valves,排泥阀, and伸缩器 for water pipeline systems. Products used in municipal water supply, wastewater treatment, and irrigation projects. Website: [Contact via industry channels] -7

  2. Suzhou Neway Valve Co., Ltd. – Leading Chinese valve manufacturer offering air release valves for water transmission and distribution systems. API certified with global project experience. Website: https://www.newayvalve.com

  3. Tanggong Valve Group – Offers air release valves and vacuum breaker valves for water pipeline applications. Materials: cast iron, carbon steel, stainless steel. Pressures 0.1-42 MPa. Website: https://www.tanggongvalve.com

  4. Shanghai Valve Factory Co., Ltd. (SVF) – Century-old manufacturer offering air release valves for water and industrial applications. Website: https://www.svf.sh.cn

  5. VALTECCN Valve – Formerly Tianjin TKT Valtec, offers air release valves from 1/2" to 6" in various standards for water pipeline systems. Serves water treatment, irrigation, and pumping station applications across 30+ countries. Website: [Contact via industry channels]

  6. Chaoda Valve Group Co., Ltd. – Founded 1984, offers air release valves and specialty valves for water systems. Certified ISO 9001, API 6D, CE/PED. Website: https://www.chaodavalve.com

  7. Zhongcheng Valve Group – Established 1998, offers air release valves for water and wastewater applications. Certified ISO9001, CE, TS. Website: [Contact via industry channels] -2

  8. DERVOS VALVE – Offers air release valves in carbon steel and stainless steel for water pipeline systems. CE, ISO9001 certified. Website: https://www.dvsvalve.com

  9. Jiangsu Shentong Valve Co., Ltd. – Publicly listed manufacturer offering air release valves for water and industrial applications. Website: http://www.stvalve.com

  10. Ningbo Pntek Technology Co., Ltd. – Manufacturer of industrial valves including air release valves for water systems. 90% on-time delivery. Website: [Contact via industry channels]