Ball Valves and typical Flow Coefficients - <em>C<sub>v</sub></em>

mobile - visible on handheld devices - alternatively go to www.engineeringtoolbox.com!

Engineering ToolBox > Ball Valves and typical Flow Coefficients - C_v

Typical flow coefficients - C_v - for ball valves - reduced and full bore

Conventional ball valves are normally not used as throttling valves since partial flow will create high velocity flow tear at the ball and seals.

Full Bore Valves

Typical flow coefficients - C_v - for full bore valves:

Valve Size
inches	1/2	3/4	1	1 1/2	2	2 1/2	3	4	6	8	10	12	14	16	18
mm	12	19	25	37.5	50	62.5	75	100	150	200	250	300	350	400	450
Flow Coefficient C_v	26	50	94	260	480	750	1300	2300	5400	10000	16000	24000	31400	43000	57000

Reduced Bore Valves

Typical flow coefficients - C_v - for reduced bore valves:

Valve Size
inches	3	4	6	8	10	12	14	16	18	20
mm	75	100	150	200	250	300	350	400	450	500
Flow Coefficient C_v	420	770	1800	2500	4500	8000	12000	14000	18000	22000

Related Topics

Engineering Toolbox >

Piping Systems Dimensions of pipes and tubes - dimensions, materials, capacities - pressure drop calculations and charts - insulation and heat loss diagrams

Related Documents

Butterfly Valves - Typical Flow Coefficients - C_v Butterfly valves and typical flow coefficients - C_v
Flow Coefficients - Cv - and Flow Factors - Kv - of Straight Through Diaphragm Valves Typical flow coefficients - C_v - and flow factors - K_v - of "straight-through" diaphragm valves of "Saunders" type
Flow Coefficient Cv and Flow Factor Kv Comparing the flow coefficient C_v with the flow factor K_v
Flow Coefficient - Cv - Formulas for Liquids, Steam and Gases The flow coefficient - C_v - is important for proper design of control valves

.