# ISO 15761 Gate Valve Manufacturing Process Overview
Introduction to ISO 15761 Gate Valves
ISO 15761 gate valves are critical components in industrial piping systems, designed to control the flow of liquids and gases. These valves adhere to strict international standards, ensuring reliability and performance in demanding applications.
Key Manufacturing Stages
1. Material Selection
The manufacturing process begins with selecting high-quality materials that meet ISO 15761 specifications. Common materials include carbon steel, stainless steel, and alloy steels, chosen based on the intended service conditions.
2. Casting or Forging
Valve bodies are typically created through casting or forging processes. Casting is used for complex shapes, while forging provides superior strength for high-pressure applications.
3. Machining Operations
Precision machining ensures all components meet exact dimensional requirements. CNC machines create the valve body, bonnet, gate, and stem with tight tolerances for proper sealing.
4. Assembly Process
Skilled technicians assemble the components, including:
- Installing the gate between the seats
- Mounting the stem and operating mechanism
- Applying proper sealing materials
5. Testing and Quality Control
Each valve undergoes rigorous testing, including:
- Hydrostatic pressure tests
- Shell tests
- Seat leakage tests
- Functional operation checks
Final Finishing
Completed valves receive surface treatments such as painting, coating, or plating for corrosion protection. Markings and identification per ISO 15761 standards are applied before packaging.
Conclusion
The ISO 15761 gate valve manufacturing process combines precision engineering with strict quality control to produce reliable flow control solutions for industrial applications worldwide.