import type { FlowControlInput, FlowControlResult } from './types.js';
/**
 * Control Valve Cv Calculator
 *
 * @formula
 *   - Liquid: Cv = Q × √(SG / ΔP)  (Q in GPM, ΔP in psi)
 *   - Gas: Cv = Q / (N × P1) × √(SG × T / ΔP)
 *   - Kv = 0.865 × Cv
 *
 * @reference ISA-75.01.01-2012 — Flow equations for sizing control valves
 * @reference IEC 60534-2-1 — Industrial-process control valves
 */
export declare function flowControl(input: FlowControlInput): FlowControlResult;
//# sourceMappingURL=flowControl.d.ts.map