Committed to Quality

When valves arrive at our facility, valves are pretested so that performance of each valve can be recorded.  This is important so that customers can be notified if valves removed from service are in working order or not.  Valves that pass all pretesting, can typically be recertified by following the testing requirements of the Test Only program laid out by the National Board of Boiler and Pressure Vessel Inspectors.

Valve Repair

Valves that fail pretesting must be repaired and then pass testing in order to be recertified.  All Valve repairs, when eligible, are performed to the standards of the National Board “VR” Program.  To ensure consistent quality repairs, the National Board has audited our processes and approved our Quality Control Manual which we have in place at Extreme Force Valve.  To be eligible for a stamped VR repair, a valve must both bear the NB stamp as well as either an ASME UV or V stamp on the nameplate.

Having the NB stamp and ASME designator stamp on a valve ensures that the valve has been designed and originally built to ASME Code Section I or Section VIII requirements and have been approved by the NB thru certified capacity testing.

Valve Inspection

Valves to be repaired must be fully disassembled and cleaned for inspection.  When the critical inspection is performed on the valve parts, “as found” dimensions are documented.  Once documented, dimensions are evaluated against OEM specifications to determine if existing parts are still within working tolerances.  Any parts suspected of non-conformance, must either be machined back into tolerance, if possible, or replaced with new parts.

All work or replacement of parts is documented as well.  Standard Practice ensures that all seat surfaces are lapped prior to reassembly.  Once assembled, valves are tested for proper pressure settings and adjusted as needed, tested for seat leakage issues, and then perform a secondary Pressure zone (backpressure) Test to ensure that valves with closed bonnets are air tight.

Our Valve Recertification Process

Pressure valve recertification and repair services

Valve Testing

Testing is performed on modern test systems that have the ability to produce computerized test reports with Graphs and Electronic Travelers containing all details of repairs and testing.  Valves must perform like new after repair in order to be recertified.

Copies of test reports are given to the customers for their records and both paper and electronic copies of test reports are kept at Extreme.  When valves are sent in repetitively for recertification, whether test only or repair is required, historical information is available to help diagnose problems and help the customer enhance their PM habits so that their service intervals can be adjusted to ensure that their valves always are in working order when in service.