Valve Sizing: Flow Calculations
For CV calculation use this basic liquid flow formula.
![cv calculation formula](https://www.cryocomp.com/wp-content/uploads/2018/02/cv-calculation-formula-300x100.png)
CV = Flow Coefficient, QL = Flow (GPM), SG = Specific Gravity, ∆P=Pressure Drop (PSIA)
Specific Gravity for Common Fluids (SG)
Water: 1.000
LN2: 0.808
LH2: 0.071
LHe: 0.125
LAr: 0.400
LO2: 1.140
![custom liquid manifold](https://www.cryocomp.com/wp-content/uploads/2018/11/Liquid-hydrogen-fuel-manifold-300x204.jpg)
Flow Coefficient Table for Standard Cryogenic Valves
Find the flow coefficient for Cyocomp standard valves by size and body style for your convenience when designing your cryogenic system.
C2000 Series & C3000 Series Cryogenic Valves CV
1/2″ Valve Size
Globe Body: 2.6 CV
Right Angle Body: 5.7 CV
Y-Pattern Body: 5.6 CV
See all C2000 1/2″ cryogenic valves
See all C3000 1/2″ liquid helium valves
1″ Valve Size
Globe Body: 16.3 CV
Right Angle Body: 28.6 CV
Y-Pattern Body: 25 CV
See all C2000 1″ cryogenic valves
See all C3000 1″ liquid helium valves
C2000 Series Cryogenic Valves CV
1-1/2″ Valve Size
Globe Body: 31 CV
Right Angle Body: 37 CV
Y-Pattern Body: 42 CV
See all C2000 1-1/2″ cryogenic valves
2″ Valve Size
Globe Body: 42.3 CV
Right Angle Body: 54 CV
Y-Pattern Body: 59.4 CV
See all C2000 2″ cryogenic valves
![cryogenic valve manual and actuated options](https://www.cryocomp.com/wp-content/uploads/2017/05/C5000-series-cryogenic-valve-150x150.jpg)
C5000 Series Cryogenic Valves CV
1/2″ Valve Size
Globe Body: 1.1 CV
Right Angle Body: 2.3 CV
Y-Pattern Body: consult factory
Joe is a product manager for Cryofab. After studying sales and marketing at Providence College, Joe joined Cryofab in 2021 to assist in managing the Cryocomp product line. With a focus on valves and evacuation components, Joe is happy to be a resource for any cryogenic related questions or inquiries.