DIN EN 60534-2-1 2012-01 PDF

Full title and description

STB DIN EN 60534-2-1 2012-01 — Industrial-process control valves — Part 2-1: Flow capacity — Sizing equations for fluid flow under installed conditions. This is the German (DIN) adoption of EN/IEC 60534-2-1 and contains equations and factors for calculating incompressible and compressible fluid flow through control (process) valves under installed conditions.

Abstract

This part of the 60534 series provides the mathematical models, sizing equations and correction factors necessary to predict flow capacity for control valves in typical installed piping arrangements. It covers incompressible and compressible flow models, Reynolds-number considerations, correction factors for piping and fittings, guidance on choked flow limits and includes normative annexes for non‑turbulent and multistage flows plus informative engineering data and worked examples. A corrigendum was published subsequently to correct/detail particular clauses.

General information

• Status: Current national adoption / active (DIN adoption of EN/IEC standard; corrigendum published).
• Publication date: 2012-01 (DIN publication/adoption January 2012); base IEC/EN edition dated 2011.
• Publisher: Deutsches Institut für Normung (DIN) — adoption of EN 60534-2-1 (based on IEC 60534-2-1).
• ICS / categories: 23.060.40 (Pressure regulators / control valves); 25.040.40 (Industrial process measurement and control).
• Edition / version: DIN EN 60534-2-1:2012-01 — national edition of EN/IEC 60534-2-1:2011 (with Corrigendum 2015 applicable to the IEC text).
• Number of pages: 56 pages (German/EN adopted text).

Scope

Specifies sizing equations and associated parameters for predicting the flow of compressible (gases, vapour) and incompressible (liquids) fluids through control valves installed in piping systems. The standard is intended for single‑phase flows of Newtonian fluids; it excludes non‑Newtonian fluids, multiphase mixtures and slurries. It also defines correction factors for attached fittings, piping effects, and gives methods for determining whether choked (flow‑restricted) conditions occur. Normative annexes address non‑turbulent and multistage valve flow.

Key topics and requirements

• Sizing equations for incompressible fluids (Kv/Cv relationships, flow coefficients and required inputs).
• Sizing equations for compressible fluids including treatment of choked flow and pressure differential ratio factors (x, xT) and Y‑factors.
• Correction factors for installed piping: inlet fittings, upstream velocity‑head loss coefficients, and pressure‑recovery factors (FL, XT, etc.).
• Reynolds‑number checks and guidance for non‑turbulent flow regimes (when Re < 10 000) with annexed equations for laminar/transitional flow.
• Provision of normative and informative annexes: non‑turbulent flow, multistage valves, piping factor computational notes, engineering data and reference calculations.
• Requirements for test‑determined parameters when ±5% accuracy is required (e.g., measured F and x values); references to appropriate test parts in the 60534 series for test methods.

Typical use and users

Used by valve manufacturers for published valve data (Kv/Cv tables and characteristic curves), by process and piping engineers for valve sizing and selection, by system integrators and OEMs when specifying control valves, and by test laboratories that determine installed‑condition flow parameters. Also consulted by researchers and consultants performing hydraulic performance assessments and safety‑margin evaluations.

Related standards

Part of the IEC/EN 60534 series on industrial‑process control valves; relevant related documents include IEC/EN 60534‑1 (terminology and general considerations), IEC/EN 60534‑2‑3 (air testing procedures / determination of xT), IEC/EN 60534‑2‑4 (inherent flow characteristics and rangeability), IEC/EN 60534‑4 (leakage classes and test methods) and IEC/EN 60534‑5 (marking). Users should consult the full series for testing methods and complementary procedures.

Keywords

control valve, process valve, flow capacity, Cv, Kv, sizing equations, compressible flow, incompressible flow, choked flow, pressure recovery factor, piping correction factor, Reynolds number, IEC 60534, DIN EN, valve testing.

FAQ

Q: What is this standard?

A: DIN EN 60534-2-1:2012-01 is the German adoption of EN/IEC 60534‑2‑1 (2011) that defines flow‑capacity sizing equations and correction factors for industrial‑process control valves under installed conditions.

Q: What does it cover?

A: It covers mathematical models and practical equations to size valves for incompressible and compressible single‑phase fluids, treatment of choked flow, installed‑condition corrections for fittings and piping, Reynolds‑number considerations, and annexes with additional computational guidance and reference examples.

Q: Who typically uses it?

A: Valve manufacturers, process and piping engineers, OEMs, test laboratories and consultants designing, specifying or verifying control‑valve performance.

Q: Is it current or superseded?

A: The EN/IEC 60534‑2‑1:2011 text was adopted nationally (DIN EN 60534‑2‑1) in January 2012; a corrigendum to the IEC edition was issued in 2015. Users should check national standards bodies for any later amendments or newer editions in the 60534 series.

Q: Is it part of a series?

A: Yes — it is Part 2‑1 of the IEC/EN 60534 series on industrial‑process control valves, which includes Part 1 (terminology), other Part 2 subparts (tests and flow characteristics), Part 4 (leakage), Part 5 (marking), etc.

Q: What are the key keywords?

A: Cv/Kv, sizing equations, compressible flow, incompressible flow, choked flow, FL/XT/X factors, installed conditions, Reynolds number, valve capacity, control valves.