Industrial-process control valves - Flow capacity. Test procedures Ingestion-build-111333 ISO 18473‑2 specifies requirements and

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Industrial-process control valves - Flow capacity. Test procedures Ingestion-build-111333 ISO 18473‑2 specifies requirements and1 Scope This part of IEC 60534 is applicable to industrial process control valves and provides the flow capacity test procedures for determining the following variables used in the equations given in IEC 6053421: a) flow coefficient C; b) liquid pressure recovery factor without attached fittings FL; c) combined liquid pressure recovery factor and piping geometry factor of a control valve with attached fittings FLP; d) piping geometry factor FP; e)