PRV Calculator
Input Parameters
Advanced Parameters
Calculation Mode
PRV Certification Requirements
Results
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\[A = \frac{Q}{38K_dK_wK_cK_v} \sqrt{\frac{G}{p_1-p_2}}\]
Calculation Methodology
Based on API RP 520 sizing methodology:
- A: Required discharge area
- Q: Flow rate
- Kd: Coefficient of discharge
- Kw: Back pressure correction factor
- Kc: Combination correction factor
- Kv: Viscosity correction factor
- G: Specific gravity of fluid
- P1: Set pressure plus allowable overpressure
- P2: Back pressure