API 598 Valve Test Report Checklist for Buyers

Review API 598 valve test reports against the purchase order. Check valve identity, shell and closure test records, leakage and witness requirements.

ZHONGYUE VALVE

11/10/20261 min read

A valve pressure-test report should let an inspector trace the result to a particular valve or an identified set of valves and compare each recorded test with the purchase order. Use this checklist when API 598 is the agreed inspection and testing standard for the valves in your order.

Match the report to the supplied valve

Check the purchase order and line item, valve type, size, pressure class and the tag or serial identifier required by the project. On a consolidated report, make sure the test entries can be matched to the listed valves. When the contract calls for separate material certificates, reconcile the identifiers with the traceability records in the inspection package.

Read the shell and closure results separately

A shell test concerns the pressure boundary. A closure test evaluates leakage through the closed valve under the specified test conditions. Check that the report identifies each required test, its medium, applied pressure, hold time and result. For closure testing, check the recorded leakage or acceptance result and the direction of test where applicable.

Use the API 598 edition named in the order and the requirements for the quoted valve design. Verify any additional project requirements separately. A single pressure or hold time copied across different valve sizes, classes and test types should be investigated before release.

Check witness and exception records before shipment

Compare the report with the agreed inspection and test plan. Confirm witness signatures, calibration references or third-party endorsements where the project calls for them. If a valve was retested after corrective work, keep the result traceable to the same valve identifier and review the deviation and disposition records where applicable.

Preparing a valve RFQ? Send the valve schedule, inspection standard edition and witness requirements to Zhongyue Valve so the documentation scope can be agreed before quotation.

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