Watts F1115-7 User Manual
Cl a s s i C se r i e s
P/L
X
X
X
X
1
Y/FC
4
2
CLOSES VALVE
OPENS VALVE
FLOW
3
(AOS)
Schematics
PRESSURE REDUCING CONTROL VALVE
w i t h SURGE CONTROL FEATURE
06/08
F115-7 (Globe)
F1115-7 (Angle)
Throttles to reduce high upstream pressure to •
constant lower downstream pressure
Closes quickly when downstream pressure •
exceeds reduced pressure setpoint
Ideal for use when high capacity on-off equipment is •
installed downstream
Reducing and Surge Control setpoints are separately •
adjustable
Standard Components
1 – Main Valve (Single Chamber)
2 – Pressure Reducing Control
3 – Downstream Surge Control
4 – Fixed Orice
Options & Accessories
X – Isolation Cocks ○
FC – Flo-Clean Strainer ○
Y – Y-Strainer (Replaces Flo-Clean) ○
ACS – Adjustable Closing Speed ○
(Replaces Fixed Orice)
AOS – Adjustable Opening Speed ○
P – Position Indicator ○
L – Limit Switch ○
(2)
(1)
(3)
(3)
(1)
Standard 3” & Smaller
(2)
Standard 4” & Larger
(3)
Optional All Sizes
(2)
(3)
(1)
Operations
The Watts ACV Combination Pressure Reducing and Surge Control Valve is designed to automatically
reduce a uctuating higher upstream pressure to a constant lower downstream pressure, and will quickly
modulate toward a closed position if downstream pressure suddenly becomes greater than the desired
regulated setpoint. The quick closing action prevents possible damaging high inlet pressure from passing
through the valve to downstream piping. Normal regulating action is controlled by a normally open, pressure
reducing pilot designed to: 1) Open (allowing uid out of the main valve cover chamber) when downstream
pressure is below the adjustable setpoint, and 2) Close (allowing uid to ll the main valve cover chamber)
when downstream pressure is above the adjustable setpoint. A decrease in downstream pressure causes
the valve to modulate toward an open position, raising downstream pressure. An increase in downstream
pressure causes the valve to modulate toward a closed position, lowering downstream pressure.
If downstream pressure suddenly becomes greater than the desired regulated setpoint, the normally closed
surge control pilot opens and rapidly admits higher inlet pressure into the valve cover, increasing rate of
valve closure. Normal pressure reducing operation resumes when downstream pressure decreases below
the desired regulated setpoint.
8550 Hansen Road • Houston, Texas 77075 • (Ph) 713.943.0688 • (Fx) 713.944.9445 • www.watts.com
Cl a s s i C se r i e s
L
M
D
A
B
C
E
F
G
H
I
J
K
F115-7 (Globe)
F1115-7 (Angle)
Materials
Globe
Angle
Body & Cover: Ductile Iron ASTM A536
Coating: NSF Listed Fusion
Bonded Epoxy Lined
and Coated
Trim: 316 Stainless Steel (1-1/4” – 8”)
ASTM B62 Bronze (10”)
(Stainless Steel Optional)
Elastomers: Buna-N (standard)
EPDM (optional)
Viton (optional)
Stem, Nut & Stainless Steel
Spring:
Operating Pressure Operating Temperature Pilot System Tubing & Fittings
Threaded = 400 psi
150 Flanged = 250 psi
300 Flanged = 400 psi
Buna-N: 160°F Maximum
EPDM: 300°F Maximum
Viton: 250°F Maximum
Reducing Control Copper / Brass (Standard)
20-175 psi (Standard) Stainless Steel (Optional)
0-30 psi (Optional)
100-300 psi (Optional)
Surge Control
20-200 psi (Standard)
0-30 psi (Optional)
Dimensions
A B C D E F G H I J K L M
VALVE
GLOBE
SIZE
THRD.
1-1/4 7-1/4 - - 3-1/2 3-1/4 - - 1-7/8 - - 1/4 1/2 1/8 15
1-1/2 7-1/4 8-1/2 9 3-1/2 3-1/4 4 - 1-7/8 4 - 1/4 1/2 1/8 15
2 9-3/8 9-3/8 10 4-15/16 4 4 4-1/4 4 4 4-1/4 1/2 1/2 1/4 35
2-1/2 11 11 11-5/8 7 5-1/2 5-1/2 5-13/16 4 4 4-5/16 1/2 1/2 3/8 65
3 10-1/2 12 13-1/4 7 5-1/4 5-3/4 6-1/8 5-1/4 5-3/4 6-1/8 1/2 1/2 3/8 95
4 - 15 15-5/8 8-5/8 - 6-3/4 7-1/8 - 6-3/4 7-1/8 1/2 1/2 3/8 190
6 - 20 21 11-3/4 - 8-1/2 8-7/8 - 8-1/2 8-7/8 1/2 1/2 1/2 320
8 - 25-3/8 26-3/8 15-3/4 - 11 11-1/2 - 11 11-1/2 1/2 1 1/2 650
10 - 29-3/4 31-1/8 18-3/4 - 14-7/8 15-5/8 - 14-7/8 15-5/8 1 1 1 940
GLOBE
150#
GLOBE
300#
COVER TO
CENTER
ANGLE
THRD.
ANGLE
150#
ANGLE
300#
ANGLE
THRD.
ANGLE
150#
ANGLE
300#
PORT
SIZE
PORT
SIZE
PORT
SIZE
SHIPPING
WEIGHTS*
For larger sizes consult factory
Valve Cover Chamber Capacity
Valve Size (in) 1-1/4 1-1/2 2 2-1/2 3 4 6 8 10
Valve Travel
.oz. 4 4 4 10 10 22 70
U.S. Gal - - - - - - -
- -
1-1/4 2-1/2
Valve Size (in) 1-1/4 1-1/2 2 2-1/2 3 4 6 8 10
Travel (in) 3/8 3/8 1/2 5/8 3/4 1 1-1/2 2 2-1/2
8550 Hansen Road • Houston, Texas 77075 • (Ph) 713.943.0688 • (Fx) 713.944.9445 • www.watts.com
Cl a s s i C se r i e s
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 14012011 0100
30
CAVITATION CHART
Sizing
F115-7 (Globe)
F1115-7 (Angle)
Size (in)
Maximum Continuous (GPM) 95 130 210 300 485 800 1850 3100 5000
Maximum Intermittent (GPM) 119 161 265 390 590 1000 2300 4000 6250
Minimum Continuous (GPM) 1 1 1 20 30 50 115 200 300
NOTE: The above chart is a suggested guide. Inlet pressure, outlet pressure, minumum, normal and maximum ow rates should
be considered for specic valve sizing. Contact Watts ACV for details.
1-1/4 1-1/2 2 2-1/2 3 4 6 8 10
Maximum continuous ow based on velocity of 20 ft. per second.
Maximum intermittent ow based on velocity of 25 ft. per second.
Minimum continuous ow based on velocity of 1 ft. per second.
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 continually in the cavitation zone should be
avoided. Consult Watts ACV for alternatives.
8550 Hansen Road • Houston, Texas 77075 • (Ph) 713.943.0688 • (Fx) 713.944.9445 • www.watts.com
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