User Manual

Bray/McCannalok HPBV – Valve Sizing Coefficients
All information herein is proprietary and condential and may not be copied or reproduced without the expressed written consent of BRAY INTERNATIONAL, Inc.
The technical data herein is for general information only. Product suitability should be based solely upon customer’s detailed knowledge and experience with their application.
Coefficients : 16
Valve Sizing Coefficients:
1. Valve Sizing Coefficients (Cv) ......................................pages 15-16
1. Cv stands for Valve Sizing Coefcient.
2. Cv varies with the valve size, angle of opening and the manufacturer’s valve style.
3. Cv is dened as the volume of water in USGPM that will ow through a given restriction or valve
opening with a pressure drop of one (1) psi at room temperature.
2. Valve Sizing Coefficients (Kv) ......................................pages 17-18
1. Kv stands for Valve Sizing Coefcient.
2. Kv varies with the valve size, angle of opening and the manufacturer’s valve style.
3. Kv is dened as the volume of water in Cubic Meters/Hour (m3/hr) that will ow through a given
restriction or valve opening with a pressure drop of one (1) bar at room temperature.