STEP 1
Pre-set pilots as noted:
Pressure Reducing –
Adjust OUT, counterclockwise, back-
ing pressure off the spring, preventing possible over-pressur-
ing of the system (See Images 1 and 2).
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 (See Images 3 and 4).
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
Note: Start with the upstream and downstream isolation
valves in your system closed, Labeled 1 and 2 in Figure 1
respectively.
Setting the Pressure Reducing Control
The following tables detail the recommended minimum valve servicing dimensions.
Figure 1
A
B
C
FLOW
FLOW
FLOW
D
FLOW
Valve Servicing Dimensions
1
2
Note: Starting up the system will require bleeding air and draining water from the valve. Take proper precautions to protect your
space from water damage.
Image 1
Image 3
Image 2
Image 4
IOM-A-ACV-910-01_610-01 2115
EDP# 1917030
© 2021 Watts 3
