Flow rate gpm 5 10 15 18 20 25 30 35 40
Best control 1 ¼’’ psi loss / 0.5 1.5 2.5 3.5 5.5 7.5 10 12.5
Best control 1’’ psi loss 0.5 1.5 4 6.5 8.5 / / / /
Use BEST CONTROL 1” in a bypass when friction loss is excessive.
Flow rate gpm 20 30 40 50 60 70 80
Best control 1” x 1’’ psi loss 3 5 9 14 19 / /
Best control 1” x 1 ¼’’psi loss 2 2 3 5 8 10 12
Best control 1” x 1 ½’’psi loss 2 2 3 4 6 7 8
Pressure Loss Chart with a bypass application with Best control 1” *
PRESSURE LOSS - BYPASS APPLICATION
- 8 -
BEST CONTROL 1”
Gauge
1’’
1’’
Gate valve
Spring check valve
System pipe
System pipe
The main pipe of bypass must not exceed 1 1/2”, while the system pipe could be bigger.
Main pipe bypass
1’’, 1 ¼’’, 1 ½’’
* Available on request.
Pressure Loss Chart