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
Counterclockwise to OPEN
bleed valve
STEP 1
Pre-set pilots as noted:
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.
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 loosening
a fitting on the valve or a plug, at the highest point of the valve as-
sembly.
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.
Setting the Pressure Controls
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-920-01_620-01 2115
EDP# 1917052
© 2021 Watts 3
