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VGF FLANGED GLOBE VALVES
11
63-2618—01
Fig. 7. Close-off pressures with 13 in. D.A pneumatic actuators.
INSTALLATION
When Installing this Product...
1.
Read these instructions carefully. Failure to follow
them could damage the product or cause a hazard-
ous condition.
2.
Check ratings given in instructions and on the prod-
uct to ensure the product is suitable for your appli-
cation.
3.
Installer must be a trained, experienced service
technician.
4.
After installation is complete, check out product
operation as provided in these instructions.
WARNING
Severe Burn Hazard.
Contact with hot liquid can lead to severe injury
or cause death.
Release system pressure and isolate or drain the
valve pipe section so the medium (steam, water or
glycol solution) does not leak out of the valve body
during installation (see Fig. 9).
SIZE 2-1/2 IN., 3 IN., 4 IN., 5 IN., 6 IN.
WITH 13 IN. D.A. PNEUMATIC ACTUATOR
(NORMALLY OPEN PORTS B TO AB)
CLOSEOFF PRESSURE RATINGS PSI (kPa)
SIZE 2-1/2 INCH
SIZE 3- AND 4-INCH
M36643
SIZE 5- AND 6-INCH
CLOSEOFF PRESSURE AT VARIOUS CONTROL AIR PRESSURES FOR
VGF FLANGED VALVES AND MP953 PNEUMATIC ACTUATORS.
AIR PRESSURE REQUIRED TO OPERATE PRESSURE-BALANCED VGF VALVES.
1
2
0
(0)
10
(69)
20
(138)
30
(207)
40
(276)
60
(414)
70
(483)
50
(345)
80
(552)
90
(621)
100
(690)
110
(759)
120
(828)
130
(897)
140
(966)
150
(1035)
160
(1104)
2
2
2
12
(83)
13
(90)
14
(96)
15
(103)
16
(110)
17
(117)
18
(124)
19
(131)
20
(138)
21
(144)
22
(152)
23
(159)
24
(165)
25
(172)
12
(83)
11
(76)
13
(90)
14
(96)
15
(103)
16
(110)
17
(117)
18
(124)
12
(83)
11
(76)
13
(90)
14
(96)
15
(103)
16
(110)
17
(117)
18
(124)
19
(131)
20
(138)
21
(144)
22
(152)
23
(159)
24
(165)
25
(172)
19
(131)
20
(138)
21
(144)
22
(152)
23
(159)
24
(165)
25
(172)
7
(48)
8
(55)
9
(62)
10
(69)
2-7
(15-50)
4-11 (30-75)
8-12 (55-85)
SPRING RANGE
PSI (kPa)
AIR PRESSURE IN ACTUA
TOR PSI (kPa)
1
2
(15)
1
(5)
0
(0)
L* U**
*L - LOWER SEAT
**U - UPPER SEAT
4
(30)
3
(20)
2
(15)
1
(5)
0
(0)
8
(55)
7
(50)
6
(40)
5
(35)
4
(30)
3
(20)
2
(15)
1
(5)
0
(0)
L* U** L* U**