Quality Control Certifications
JS Machine & Valve operates under established industry standards to support valve repair services, pressure testing, and quality control requirements across refining, power generation, and pipeline applications. Our certifications and procedures ensure repaired valves are inspected, tested, and documented to meet performance expectations before returning to service.
MSS SP-61 – Pressure Testing of Steel Valves
What It Covers
Manufacturers Standardization Society SP-61 defines requirements for pressure testing of steel valves, including shell and seat testing to verify structural integrity and sealing performance.
Why It Matters
Pressure testing is a critical step in confirming that repaired valves can withstand operating conditions and maintain proper isolation.
How JS Applies It
- Shell and seat testing of repaired valves
- Verification of sealing performance under pressure
- Integration with final inspection and documentation
National Board "VR" Stamp - Valve Repair
What It Covers
The National Board of Boiler and Pressure Vessel Inspectors “VR” Stamp certifies organizations to repair pressure relief valves in accordance with controlled procedures and documented quality systems.
Why It Matters
This certification ensures pressure relief valve repairs are performed under strict guidelines for safety, accuracy, and traceability.
How JS Applies It
- Repair and testing of pressure relief valves
- Controlled procedures and documentation for each repair
- Compliance with National Board requirements for safety devices
National Board “R” Stamp – Repair & Alteration Certification
What It Covers
The National Board of Boiler and Pressure Vessel Inspectors “R” Certificate of Authorization applies to the repair and alteration of pressure-retaining equipment, including valves, in accordance with the National Board Inspection Code (NBIC).
Why It Matters
This certification ensures that repair work on pressure-containing components is performed under a controlled quality system, with oversight, documentation, and verification required for compliance and safety.
How JS Applies It
- Repair and alteration of pressure-retaining valve components
- Execution of work under documented quality control procedures
- Coordination with authorized inspection agencies
- Full documentation and traceability for repair activities
CALL US
417-825-3354
LOCATION
20583 US Highway 169
Nowata, OK 74048
BUSINESS HOURS
M-F : 8:00am to 5:00pm
