Valve maximum allowable leakage standard

ANSI B16.104-197

Leakage Class	Maximum allowable leakage				Test Medium	Test Pressure
Ⅱ	0.5%Cv				10～52℃ Air or Water	Max Working Pressure Difference △P Or 501b/in2 Difference Pressure, Choose Lower One
Ⅲ	0.1%Cv				10～52℃ Air or Water	Max Working Pressure Difference△P Or 501b/in2 Difference Pressure, Choose Lower One
Ⅳ	0.01%Cv				10～52℃ Air or Water	Max Working Pressure Difference△P Or 501b/in2 Difference Pressure, Choose Lower One
V	Nominal diameter per inch and and per pound/inch2Difference Pressure， Water leakage of 0.0005ml/min is allowed				10～52℃ Water	Max Working Pressure Difference△P
Ⅵ	Size		ml/min	No. Bubble/min	10～52℃ Air or Nitrogen	Max Working Pressure Difference△P Or 501b/in2 Difference Pressure, Choose Lower One
	in	mm
	1	25	0.15	1
	1.5	38	0.30	2
	2	51	0.45	3
	2.5	64	0.60	4
	3	76	0.90	6
	4	102	1.70	11
	6	152	4.00	27
	8	203	6.75	45

Post time: Sep-06-2022