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ISO 15761 Compliant Manufacturing Process for Gate Valves

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# ISO 15761 Compliant Manufacturing Process for Gate Valves

## Introduction to ISO 15761 Standard

The ISO 15761 standard specifies the requirements for steel gate valves designed for petroleum, petrochemical, and related industries. Compliance with this standard ensures that gate valves meet stringent quality, safety, and performance criteria for critical applications.

## Key Stages of ISO 15761 Compliant Manufacturing

### 1. Material Selection and Verification

The manufacturing process begins with careful material selection according to ISO 15761 requirements. All raw materials undergo:

  • Chemical composition analysis

  • Mechanical property testing

  • Non-destructive examination

  • Traceability documentation

### 2. Precision Casting and Forging

Casting Process

For valve bodies and bonnets, we employ:

  • Investment casting for complex geometries

  • Sand casting for larger components

  • Rigorous quality control at each stage

Forging Process

Critical components like stems and wedges undergo:

  • Closed-die forging for superior strength

  • Heat treatment for optimal microstructure

  • Dimensional verification

### 3. Machining and Finishing

All components undergo CNC machining to achieve:

  • Tight tolerances per ISO 15761 specifications

  • Precise sealing surfaces

  • Proper fit and function

### 4. Assembly and Testing

Assembly Process

Valves are assembled using:

  • Precision alignment techniques

  • Specified bolting procedures

  • Proper gasket installation

Testing Procedures

Every valve undergoes:

  • Shell test (1.5 times design pressure)

  • Seat test (1.1 times design pressure)

  • Functional operation test

  • Final inspection and documentation

## Quality Assurance Measures

Our ISO 15761 compliant manufacturing includes:

  • Third-party inspection options

  • Material test reports for all components

  • Complete traceability throughout production

  • Final certification package

## Benefits of ISO 15761 Compliance

Gate valves manufactured to ISO 15761 standards offer:

  • Reliable performance in demanding applications

  • Extended service life

  • Reduced maintenance requirements

  • Global acceptance in the petroleum industry

## Conclusion

The ISO 15761 compliant manufacturing process ensures gate valves meet the highest industry standards for safety and performance. From material selection to final testing, each step is carefully controlled to deliver products that excel in critical applications.

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