IEC 60534
5 in-depth engineering guides on IEC 60534 — specification, selection, testing and procurement.
Everything on IEC 60534
Vajra's engineering team has published 5 technical guides covering IEC 60534 for industrial valve selection, specification, testing and procurement. Browse the full set below.
Severe Service Control Valves: Anti-Cavitation, Anti-Noise & Multi-Stage Trim
When pressure drops are extreme, standard control valve trim cavitates, flashes, or screams. Severe-service trim manages energy in stages to protect the valve and the downstream pipe. This guide explains the failure mechanisms and the trim that defeats them.
Valve Sizing for Control Valves - Cv, Kv, and Pressure Drop Calculation
Correctly sizing a control valve prevents oversizing (poor rangeability, instability) and undersizing (insufficient flow). This guide explains Cv, Kv, pressure drop, and the ISA/IEC sizing equations with worked examples.
Control Valve Selection Guide: Cv Calculation, Types & Actuators
Control valves are the workhorses of process automation - incorrect sizing or wrong valve type causes instability, cavitation, and premature wear. This guide covers Cv/Kv calculation methodology, IEC 60534 liquid and gas sizing, globe vs butterfly vs cage valve selection, trim characterisation, and positioner specification.
Valve Cv Calculation: Flow Coefficient Formula, Worked Examples & Kv Conversion
Cv (flow coefficient) is the fundamental metric for sizing and selecting control valves, isolation valves, and regulators. This guide explains the Cv formula for liquids, gases, and steam, walks through worked examples with real numbers, and shows exactly how to convert between Cv and Kv.
Control Valve Sizing and Cv Calculation: A Step-by-Step Engineering Guide
Control valve sizing is the most critical step in ensuring stable and accurate process control. An oversized valve operates at low opening and is prone to instability and seat erosion; an undersized valve starves the process and cannot meet maximum flow demand. This guide explains the Cv flow coefficient method, ISA/IEC 60534 equations for liquid, gas and steam, and common sizing pitfalls to avoid.
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