STEP 1
Pre-set pilots as noted:
Pressure Surge
- Turn Surge Control adjustment screw OUT, counterclockwise, backing pressure off spring, preventing possible over-
pressuring of system.
Pressure Reducing
- Turn Reducing Control adjustment screw IN, clockwise, increasing pressure on the spring, allowing pilot to stay
open during setting of the surge function.
Pressure Sustaining:
Turn Sustaining Control adjustment screw OUT, counterclockwise, backing pressure off the spring, to allow it to
stay open while adjusting the other controls
Opening and Closing Speed
– Turn the adjustment screws on the Closing Speed and Opening Speed Controls, if the main valve is so
equipped, OUT, counterclockwise, 11/2 to 21/2 turns from full closed position.
Globe
Angle
Size (in)
1
1/4
1
1/2
2
21/2
3
4
6
8
10
12
14
16
20
24
A (in)
16
16
20
22
22
24
32
34
38
44
48
52
56
56
B (in)
10
10
12
14
14
16
24
26
28
30
34
40
48
48
Size (in)
1
1/4
1
1/2
2
2
1/2
3
4
6
8
10
12
14
16
C (in)
16
16
20
22
22
24
32
34
38
44
48
52
D (in)
10
10
12
14
14
16
24
26
28
30
34
40
STEP 2
To ensure proper operation, any trapped air will need to be bled
off the valve cover during startup. If your ACV includes a bleed
valve, use a flat head screwdriver to slowly open the valve (See
Figure 1).
If your valve does not include a bleed valve, bleed air by loosen-
ing a fitting on the valve or a plug, at the highest point of the valve
assembly.
STEP 3
Pressure the line, by opening the upstream isolation valve slowly.
Air is vented through the air bleed valve or loosened fitting.
Tighten the fitting when liquid begins to vent (See Figure 1).
Repeat the process until no air is trapped in the system.
Counterclockwise to OPEN
bleed valve
Setting the Pressure Control Pilots
The following tables detail the recommended minimum valve servicing dimensions.
A
B
C
FLOW
FLOW
FLOW
D
FLOW
Valve Servicing Dimensions
Figure 1
Position Indicator
IOM-A-ACV-912-11_612-11 2115
EDP# 1917038
© 2021 Watts 3
