Watts M61115-74 - Manual (Page 3)

8550 Hansen Road • Houston, Texas 77075 • (Ph) 713.943.0688 • (Fx) 713.944.9445 • www.watts.com
M
ustang
s
eries
M6115-74 (Globe)
M61115-74 (Angle)
Sizing
Low-Flow By-Pass
Size (in) Adjustment Range
3/4 20-200 psi
CAVITATION ZONE INLET PRESSURE - PSI
OUTLET PRESSURE - PSI
300
280
260
240
220
200
180
160
140
120
100
80
60
40
20
0 10 20 40 50 60 70 80 90 130 140 120 110 100 30
CAVITATION CHART
After selecting the valve size, locate
inlet and outlet pressures on this
chart. If the intersection point falls
in the shaded area, cavitation can
occur. Operation of valves continu-
ally in the cavitation zone should be
avoided. Consult Watts ACV for al-
ternatives.
Cavitation Chart
Pressure Drop
Flo
w
20
3/4”
15 10 5
0
0
10
20
30
40
Size (in) 3 4 6 8 10
Maximum Continuous (GPM) 260 580 1025 2300 4100
Minimum Continuous (GPM) 1 30 50 115 200
Maximum continuous flow based on velocity of 20 ft. per second.
Minimum continuous flow based on velocity of 1 ft. per second.
NOTE: The above chart is a suggested guide. Inlet pressure, outlet pressure, minumum, normal and maximum flow rates should
be considered for specific valve sizing. Contact Watts ACV for details.