Iso 5208 leakage rate pdf

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NOTENo visually detect able leakage for the duration of the test. NOTEThe leakage rates only apply when discharging test fluid to the atmosphere 1) The obturator tightness test leakage rate to be used for each valve type shall be as specified in the valve product Standard) These leakage rates only apply when discbarging to the atmosphere) N = Standard test conditions ISO (EN) supersedes BS and specifies acceptable leakage rates such as ‘Rate A’ and ‘Rate B’. Rate A allows ‘no visible leakage’, similar to API for resilient seated valves ISO Leakage Rate e download as PDF File.pdf) or read online for free Valve leakage class and rate for ball valve, gate, globe, check valve, butterfly, and plug valves according to the latest international standards ISO, API, EN, The purpose of this International Standard is the establishment of basic requirements and practices for pressure testing valves of various configurations that are used in general ISO specifies examinations and tests that a valve manufacturer needs to act upon in order to establish the integrity of the pressure boundary of an industrial metallic Allovable leakage mm³/sec: Rate A (a: Rate B (b: Rate C: Rate D (c: Rate E (d: Rate F (d: Rate G (d: Liquid: No visually detectable leakage for the duration of the testx DN NOTEThe leakage rates only apply when discharging test fluid to the atmosphere. NOTEThe closure leakage rate that applies is either that identified in a valve product ISO (EN) supersedes BS and specifies acceptable leakage rates such as ‘Rate A’ and ‘Rate B’. Rate A allows ‘no visible leakage’, similar to API for resilient seated valves There areleakage rates specified in ISO A, AA, A, B, C, CC, D, E, EE, F, G and the rate A is the highest grades. ISO Maximum allowable closure test leakage rate.