116fm (globe) - pressure relief valve, 910 ops & inst, Headloss – Watts 116FM User Manual
Page 4: Flow data - f100 (globe), Valve cover chamber capacity, Valve travel, Globe, Flow rate - gallons per minute (water)
910 Ops & Inst
ES-ACV-116FM 1308
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USA: • Tel. (713) 943-0688 • (713) 944-9445 • www.watts.com
A Watts Water Technologies Company
116FM (Globe) - Pressure Relief Valve
Headloss
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 1 psi 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
Globe
2
3 4 5 6 789 10
20
40
60 80 100
200
500
1000
2000
5000 10000
20000
2
3
4
6
8
10
20
40
60
80
100
Pressure Drop (psi)
Flow Rate - Gallons per Minute (Water)
3
4
6
8
Flow Data - F100 (Globe)
3
4
6
8
Flow Rate GPM (Water)
460
800
1800
3100
Maximum Intermittent
Flow Rate GPM (Water)
570
1000
2300
3900
Cv Factor GPM (Globe)
125
220
460
775
Cv Factor GPM (Angle)
170
280
650
1100
Valve Cover Chamber Capacity
Valve Size - Inches
3
4
6
8
fluid oz.
10
22
70
U.S. Gal
1-1/4
Valve Travel
Valve Size - Inches
3
4
6
8
Travel - Inches
3/4
1
1-1/2
2