1. Shanghai Valve Factory Co., Ltd. (SVF) – Century-old fluid control solutions provider offering balancing valves for HVAC and district heating systems. Pressure ratings up to PN40, sizes from DN50 to DN600. ISO9001 certified with comprehensive testing facilities. Website: https://www.svf.sh.cn

  2. Zhejiang DunAn Intelligent Control Technology – Leading manufacturer of balancing valves and HVAC control solutions. Products include automatic flow control valves, differential pressure controllers, and pressure-independent balancing valves. Serves commercial and industrial applications. Website: [Contact via industry channels]

  3. Tanggong Valve Group – Offers balancing valves for hydronic systems in various materials including ductile iron, carbon steel, and stainless steel. Pressures up to 42 MPa, sizes DN15-600mm. Website: https://www.tanggongvalve.com

  4. Beijing Tianzhu Valve Factory – Founded 1976, offers balancing valves and control valves for district heating and HVAC applications. ISO9001, ISO14001, ISO18000 certified. Conforms to GB, ANSI, API, BS, DIN, ISO standards. Website: [Contact via industry channels]

  5. Anhui Tongdu Fluid Technology – Established 1993, listed company (stock code 832250). Offers dynamic balancing valves and flow control solutions for water systems in municipal and industrial applications. Website: [Contact via industry channels]

  6. Suzhou Neway Valve Co., Ltd. – Leading Chinese valve manufacturer offering balancing valves for oil & gas and industrial applications. API certified with global project experience. Website: https://www.newayvalve.com

  7. Chaoda Valve Group Co., Ltd. – Founded 1984, offers balancing valves and control valves for HVAC and industrial applications. Certified ISO 9001, API 6D, CE/PED. Website: https://www.chaodavalve.com

  8. DERVOS VALVE – Offers balancing valves in carbon steel and stainless steel for hydronic systems. API6D, CE, ISO9001 certified. Website: https://www.dvsvalve.com

  9. Zhongcheng Valve Group – Established 1998, offers balancing valves for power, petrochemical, and HVAC applications. Certified ISO9001, CE, TS. Website: [Contact via industry channels]

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