Watts M400 / M1400 - Manual (Page 2)

Headloss
Flow Rate - Gallons per minute (Water)
Pressure Drop (psi)
Angle
Globe
2 4 6 8 10 20 40 60 80 100 200 500 1000 2000 5000 10000 20000
100
80
60
40
30
20
10
8
6
4
3
2
Maximum continuous flow based on velocity of 20 ft. per second.
Maximum intermittent flow based on velocity of 25 ft. per second.
The C
v
Factor of a value is the flow rate in US GPM at 60°F that will cause a 1psi drop in pressure.
The factors stated are based upon a fully open valve.
C
v
factor can be used in the following equations to determine Flow (Q) and Pressure Drop (∆P):
Q (Flow) = C
v
√∆P ∆P (Pressure Drop) = (Q/C
v
) 2
ES-ACV-M400-M1400 1219 © 2012 Watts
USA: Tel. (713) 943-0688 • (713) 944-9445 • www.watts.com A Watts Water Technologies Company
M400 / M1400 — Full Port Ductile Iron Single Chamber Basic Valve with
Mechanical Check Feature
Flow Data - ACV M400 (Globe) / M1400 (Angle)
Valve Size - Inches 3 4 6 8 10 12 14 16
Maximum Continuous
Flow Rate Gpm (Water)
485 800 1850 3100 5000 7000 8500 11100
Maximum Intermittent
Flow Rate Gpm (Water)
590 1000 2300 4000 6250 8900 10800 14100
C
V
Factor GPM (Globe) 100 175 490 770 1200 1750 2125 2890
C
V
Factor GPM (Angle) 125 215 571 990 1530 2525 2885 3575
Estimated
Valve Cover Chamber Capacity
Valve Size - Inches 3 4 6 8 10 12 14 16
fluid oz. 16 22 70
U.S. Gal 1-1/4 2-1/2 4 6-1/2 9-1/2
Valve Travel
Valve Size - Inches 3 4 6 8 10 12 14 16
Travel - Inches 3/4 1 1-1/2 2 2-1/2 3 3-1/2 4
4 3 10 6 8 12 14 16
4 3 10 6 8 12 14 16