Guide to Selecting, Installing, and Maintaining Forged Flanged Check Valves (A105)

Introduction

Proper selection and correct installation of A105 forged flanged check valves have a direct impact on the performance and lifespan of industrial piping systems.
This guide covers selection criteria such as size, pressure class, material, standards, and essential installation and maintenance practices.

Key Considerations for Selection

● Valve Size

Choose according to pipeline diameter and required flow rate.

● Pressure Class

Select based on system requirements: Class 150, Class 300.

● Body & Disc Material

Forged carbon steel A105 provides high durability and strength.

● Flange Standards

Connections must comply with ASME B16.5.

● Operating Temperature

Ensure the valve is compatible with the fluid’s temperature and ambient conditions.

Installation Guidelines

• Inspect the flanges and ensure they match the valve’s standard.

• Install the valve according to the flow direction (follow the arrow on the body).

• Ensure proper sealing using suitable gaskets and correctly tightened bolts.

• Perform an operational test after installation to confirm proper opening and closing.

Maintenance

• Regularly inspect flanges and bolts for loosening or wear.

• Check sealing surfaces and the disc for possible leakage.

• Clean the flow path if suspended particles enter the system.

• Replace gaskets and consumable components when necessary.

Conclusion

By following proper selection, installation, and maintenance practices, an A105 forged flanged check valve will ensure safe operation, reduce maintenance costs, and significantly extend the service life of industrial piping systems.