1. Hangzhou Haiwo Fluid Control Equipment Co., Ltd. – Formerly Fuyang Paiwo Valve, established 2009 in Zhejiang. Specializes in self-operated steam pressure reducing valves, differential pressure regulators, flow regulators, and temperature control valves. Products feature top-guided structure, compact design, low pressure loss. Serves paper, chemical, petrochemical, power, metallurgy industries. Holds multiple patents including "self-operated pressure regulating valve with pressure stabilization and noise reduction." Website: [Contact via industry channels] -1

  2. Beijing Tuoyun Technology (TCT Brand) – Professional fluid system solutions provider manufacturing TCT brand pressure reducing valves, back pressure valves, regulators. Stainless steel construction with large PTFE diaphragm design for precise output pressure, high flow capacity. CV value 5.0, temperature range -40°C to 74°C. Applications in aerospace, petrochemical, semiconductor, biopharma industries. Website: [Contact via industry channels] -6

  3. Shanghai Valve Factory Co., Ltd. (SVF) – Century-old fluid control solutions provider offering pressure reducing valves and regulators for steam, water, and gas applications. Pressure ratings 150-4000 lb, temperatures -196°C to +750°C. Website: https://www.svf.sh.cn

  4. Suzhou Neway Valve Co., Ltd. – Leading Chinese valve manufacturer offering pressure reducing valves for oil & gas, petrochemical, and power generation industries. API certified with global project experience. Website: https://www.newayvalve.com

  5. Tanggong Valve Group – Comprehensive valve manufacturer in Wenzhou's "Valve City" offering pressure reducing valves for steam, water, and gas applications. Materials: WCB, CF8, CF8M, stainless steel. Pressures 0.1-42 MPa, temperatures -196°C to 730°C. Website: https://www.tanggongvalve.com

  6. Yongjia Yuliu Intelligent Control Equipment – Specializes in self-operated pressure and temperature regulating valves. Located in Yongjia County's "Valve Town," offering CV3000 series control valves and pressure reducing solutions. Website: [Contact via industry channels] -9

  7. Zhongcheng Valve Group – Established 1998 in Yongjia's Oubei五星 Industrial Zone, 13,000 m² facility. Offers pressure reducing valves and control valves certified ISO9001, CE, TS. Serves power, petrochemical, paper, sewage treatment industries. Website: [Contact via industry channels] -2

  8. Chaoda Valve Group Co., Ltd. – Founded 1984 in Wenzhou, offers pressure reducing valves for various applications. Certified ISO 9001, API 6D, CE/PED. Exports to Europe, Americas, Asia-Pacific. Website: https://www.chaodavalve.com

  9. DERVOS VALVE – Offers pressure reducing valves in carbon steel, stainless steel, and alloy steel. API6D, CE, ISO9001 certified. Website: https://www.dvsvalve.com

  10. Anhui Tongdu Fluid Technology – Established 1993, listed company (stock code 832250), 248 mu facility, 53,000 m² workshop. Offers pressure reducing valves, control valves, and fluid control systems for water, petrochemical, and industrial applications. Website: [Contact via industry channels]