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Type Testing of Rising Stem Valves Equipped with Graphite Packing for Fugitive Emissions
This standard specifies the requirements and acceptance criteria (100 ppmv) for fugitive emission type testing of rising and rising-rotating stem valves equipped with packing previously tested in accordance with API 622. Packing shall be suitable for use at service temperatures °29 °C to 538 °C (°20 °F to 1000 °F). The type testing requirements contained herein are based upon elements of EPA Method 21.
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