https://valves.curtisswright.com/en-us/est/Products/Hydrostatic-Test-Isolation-Plugs/High-Lift-Flange-Weld-Test-Plugs
High Lift Flange Weld Test Plug | Curtiss-Wright Valves Division
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https://usaindustries.com/piping-isolation-testing-products/flange-weld-test-plug/
Flange Weld Test Plug | Precision Engineered Products for Pipes & Tubes
Mar 30, 2026 - Flange Weld Test plugs let you monitor conditions upstream of the pipe plug seal, isolate, purge and hydrotest the weld area to code
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