DeZURIK
Manual G-Series Actuators on PEC Eccentric Valves
Stop Adjustments
This actuator has a stop to limit valve stroke at each end of the cycle. The open position stop is an
integral, non-adjustable stop in the actuator cover; the closed position stop is an adjustable stop screw
located in the side of the actuator housing (Size 6 and Size 12) or in the end of the extension cap (Size
16). To adjust the closed position stop, follow these steps:
1. Relieve pipeline pressure.
2. Loosen the jam nut on the closed position stop screw, then turn the closed position stop screw
counterclockwise about 1 ½".
3. Close the valve with the torque specified in Table A.
4. While maintaining the torque from Table A, turn the closed position stop adjusting screw in just
until resistance is felt as it contacts the gear.
5. Lock the stop in this position by tightening the jam nut against the actuator.
Table A: Valve Closing Torques
Valve
Actuator
Size
Size
4
G6
5
G6
6
G6
8
G6
10
G6
10
G12
12
G6
12
G12
14
G12
16
G12
16
G16
18
G12
18
G16
20
G12
20
G16
24.00
G16
24.50 &
G16
30.00
30.50 &
G16
36.00
Note:
The "N/A" designation in Table A indicates that the Valve/Actuator combination cannot be used for that
particular reverse pressure.
D10063
Direct
Pressure
25
50
Drop (psi)
4
4
4
8
8
9
8
8
9
15
15
17
22
22
25
11
11
18
29
29
29
15
15
15
18
18
24
22
22
29
19
19
26
26
26
35
21
21
29
29
29
44
22
22
32
24
24
29
26
26
35
57
57
72
Page 6
Seating Torque (ft lbs)
Reverse Pressure Drop
75
100
125
5
5
5
10
11
11
10
11
11
19
20
21
29
33
36
18
18
18
29
N/A
N/A
15
15
15
29
34
34
37
45
45
26
26
26
45
55
55
29
29
29
55
55
N/A
32
32
32
34
39
N/A
42
49
N/A
N/A
N/A
N/A
150
175
200
5
5
5
11
11
11
11
11
11
21
21
21
N/A
N/A
N/A
18
18
18
N/A
N/A
N/A
15
15
15
34
34
34
45
45
N/A
26
26
26
N/A
N/A
N/A
29
29
29
N/A
N/A
N/A
32
32
32
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
August 2012
230
5
11
11
21
N/A
18
N/A
15
34
N/A
26
N/A
29
N/A
32
N/A
N/A
N/A
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