Company Overview
Zhengmao Valve Co., Ltd. is an industrial valve manufacturer established in 1992 in Yongjia County, Wenzhou, China, a region widely recognized for its mature industrial valve supply chain and engineering manufacturing ecosystem.
The company focuses on the engineering design, manufacturing, inspection, and export supply of industrial valves used in pipeline systems with demanding operating conditions.
With more than three decades of continuous production experience, Zhengmao Valve operates as a full-process manufacturer, integrating casting, machining, assembly, testing, and export documentation within its internal production system.
Manufacturing Infrastructure
Zhengmao operates three production bases located in:
• Wenzhou Dongou Industrial Zone
• Tangtou Industrial Zone
• Zhejiang Lishui Industrial Zone
The total production area covers approximately 78,600 square meters, including dedicated workshops for machining, assembly, and pressure testing.
In addition to production bases, the company operates:
• A precision casting facility for valve bodies and components
• A testing and inspection center for performance validation
• A material laboratory for chemical and mechanical property analysis
Engineering & Technical Team
The company employs approximately 510 staff members, including:
Engineering and technical personnel for product development and optimization
Skilled production and machining operators
Quality inspection specialists responsible for process control and final testing
Technical capabilities include:
Valve structure design and optimization based on industrial working conditions
Material selection for corrosion resistance, pressure resistance, and temperature stability
Engineering adaptation for non-standard pipeline systems
Failure analysis and performance evaluation for industrial applications
Product Scope & Manufacturing Range
Zhengmao manufactures over 60 product series and thousands of specifications, covering:
• Isolation valves for pipeline shut-off systems
• Regulation and control valves for flow adjustment
• Check valves for backflow prevention systems
• Special valves designed for non-standard industrial conditions
Material options typically include:
• Carbon steel series for general industrial systems
• Stainless steel series for corrosion-resistant applications
• Alloy steel for high-temperature and high-pressure systems
• Duplex stainless steel for aggressive chemical or seawater environments
Application
Energy and petrochemical infrastructure projects, where valves are used in high-pressure pipelines for oil, gas, and refining systems.
Industrial manufacturing plants, where valves are applied in process lines, utility systems, and continuous production operations.
Water treatment and municipal pipeline systems, where valves are used for flow control, pressure regulation, and long-term water supply reliability.
Engineering procurement contractors (EPC), where valves are selected based on technical specifications, standards compliance, and project documentation requirements.
Documentation & Traceability
For international shipments, the company provides technical and quality documentation including:
Material test certificates (MTC)
Pressure test reports
Inspection records
Packing lists and export documentation
These documents are provided to support engineering verification and project compliance requirements.
