Instrumentation calculators
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Control Valve Sizing
Cv/Kv · liquid/gas/steam · ISA-75.01.01
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DP Flow Elements
orifice · nozzle · venturi · ISO 5167
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Restriction Orifice
single & multi-stage · choke + cavitation
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Engine contract self-test — control-valve liquid
190.76Cv · Kv 165
Sub-critical: service ΔP is below the choked limit.σ=1.33 — likely damaging cavitation; review trim/Δp staging.Required opening 95% outside the 20–80% band — review valve size.
relRho0.9664
dP_kPa460
FF0.9442
dpChoked_kPa497.19
dpSizing_kPa460
sigma1.326
FP1
FLP0.9
FR1
Rev2966953
control-valve-liquid · 1.0.0 · isa-75.01.01:2012 — citations: cv→ANSI/ISA-75.01.01 §7.2 / Eq.1–5 (incompressible) · ff→ANSI/ISA-75.01.01 §7.3 FF critical pressure ratio · dpChoked→IEC 60534-2-1 choked liquid flow · sigma→ISA-RP75.23 cavitation index σ