Custom Your Industry Valves
Custom Your Industry Valves
Check Valve Series

Check valve is an automatic valve operated by medium pressure. It prevents fluid reverse flow in pipelines to protect equipment and ensure system safety.

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Process Flow Diagram
Strict process create high durability valve accessories
Valve Drawing

Valve Drawing

Valve Molding

Valve Molding

Casting Process

Casting Process

Annealing Process

Annealing Process

Semi-finished blank

Semi-finished blank

Material Inspection

Material Inspection

Production & Processing

Production & Processing

Valve Assembly

Valve Assembly

Testing & Pressure Testing

Testing & Pressure Testing

Valve Painting

Valve Painting

Packaging

Packaging

Product Transportation

Product Transportation

Quality Assurance Commitment
We Take Pride in Our High-Quality Work
International Quality Certification
Our valves are strictly designed and manufactured per GB, ANSI, API, JIS, BS, DIN and other global standards.
Support for multiple inspections
Every valve undergoes strict inspection and testing, with all inspection documents provided accordingly.
Reliable Technical Resources
To maintain all certifications and uphold the company’s high standards, all SIO employees receive professional training.

+86 139 6883 6180

tgforeign@tg-valves.com

+86 18057738393