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"JSNPUPSPQFSBUFEWBMWFBDUVBUPS
XXXLWBDPLS
Operation Types of AOV
The AOV(Air Motor Operating Valve Actuator)is a system driven by air motor that is powered by
pressure of air or nitrogen gas. It has speed reducers, such as gears, in the middle to operate
various valves and dampers on the shop floor automatically by controlling torques. Air Motor has
better characteristics against noise or vibration from outside compared to the same power of
electric motor type because it is smaller in size, easier to get high speed, has no danger of
explosion by sparks, and has no electronic signal system inside.
Furthermore, it is economical because installation cost is lower than the electric motor type when
it is installed in the conventional working plant. There is a strong point that it is possible to
automate the operation of conventional working valves. The automation of conventional manual
valves is easy and economical because it only requires a supply of compressed air. And AOV
could be installed on all valves no matter what kind of valve it is.
Characteristics of the Product
ⶹ The product was designed to adopt the self-locking method, to maintain the valve opening
position even under the changes of valve load. (It is most suitable to the lines where changes
of vibration or pressure are frequent.)
ⶹ It has dual mode in opening valves; Automatic Mode and Manual Mode. It is capable of shifting
modes with the clutch and lever. The valves can be opened or shut by the selection switch in
the main body or control room under the automatic mode. On the other hand, valves can be
operated by the manual handle under the manual mode.
ⶹ The inner main power transmission gears run in oil bath condition, making its high durability
and anti-abrasion.
ⶹ It was designed to adopt the perfect built-in open/close torque limit & geared limit system to
have a double safety system against problems caused by poor valve parts or valve overtightening.
ⶹ The teeth-face of the power transmission gears were finished with fine abrasion and special
heat treatment to have high durability, less noise, and higher transmission efficiency.
ⶹ Ball bearings and oil seals are installed on top and under the stem to have sealing abilities,
and to decrease the operation power of the manual handle to open and shut the valves.
ⶹ The valve opening position will be shown continuously by adopting the % Continuous Type
method. This makes it visually stable.
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XXXLWBDPLS
AOV Certificate
ISO9001
LIMIT S/W Certificate
(Exd ⳓC T4)
IP66
Certificate
AOV applicable valves
ⶹ Gate Valve (Solid Wedge, Slide, Flexible Wedge)
ⶹ Globe Valve (Rising & Nonrising)
ⶹ Ball Valve / Plug Valve
ⶹ Butterfly Valve & Damper
ⶹ Polymer Valve
ⶹ Other valves with handles are able to apply AOV
GATE VALVE
GLOBE VALVE
3
Y-GLOBE
Inner structure diagram of standard AOV
ⴗ The open and close status of valve and open
placement can be verified perfectly even while
driving and designed to reduce the error of
open and close operation by increasing the
visual effect by adopting the rotary indicator.
ⴘ The auto and manual mode can beswitched using
lever and clutch and it is designed to open
and close the valve by operating the wheel in
manual mode and using selecting switch in aut
omode.
ⴙ Reduced the number of possible malfunctioning
components and secured the easy maintenance
by integrating the switches such as Logic valve,
Limit Switch, Torque Switch etc.
ⴚ Secured the safety from the penetration of
moisture and external shock with the metal
material for the Selector Switch.
ⴛ Since important power transmitting gear and
inner components are operated in oil bath
condition, the durability is guaranteed for long
term operation and improved the valve safety by
adopting the Self-Locking type of design.
ⴜ The sealing function was increased remarkably
by using the o-rings and quad-rings for the
sealing of main body and the cover bolt was
designed as non-penetration type which meets
the explosion protection standard.
ⴝ Secured the smooth operation of power train by
designing the vane type air motor which
secured the safety of Torque and RPM.
ⴞ Standardized the signal air supply connection
as NPT 1/4".
ⴟ The perfect operation of open, close, dry
contact or 4~20mA (attained KOSHA 'Exd IIC
T4')
4
5
Inner structure diagram of Big AOV
ⴗ High horsepower, low inertia Vane air motor.
ⴘ Oil-Bath Geared-Reduction
ⴙ Heat treated and grinded high efficiency gear.
ⴚ One body switch unit of torque and limit switch
(interaction of T/S and L/S).
ⴛ Seal type metal selector switch.
ⴜ Increased the sealing of inner components
(O-ring design).
ⴝ Increased the adoptability of thrust force by high
loading which adopted the individual thrust unit.
6
7
"JSNPUPSPQFSBUFEWBMWFBDUVBUPS
XXXLWBDPLS
AOV operation type
1. Type A operation (at site valve operation type) AOV: Open or close the valve using OPEN/
STOP/ CLOSE selecting switch which is on AOV itself, installed on the valve at site. This is the
most universal valve automation type which can stop during operation and shows the present
opening status of valve in % indication.
(A TYPE)
2. Type B operation (remote air switch box operating method) AOV: The open and close of valve can be
controlled from the individual air switch box which is located certain distance (max 30~40m) from valve
and the open and close status of valve can be monitored by getting the feed-back signal if needed. This
method is very useful when adopting on the valves that is difficult to approach such as the valves on high
place, Stack, top valve of storing tank, underground piping valve and the valves that is difficult to approach
when fire etc and they are classified in 3 types as follows.
B1 : Open and close the valve from the switch (switch box) located certain distance from valve and no
feed-back type.
B2 : Open and close the valve by selecting the switch box located certain distance from valve or valve
at site and receives the air feed back which can show the open and close status of valve.
B3 : Watching the status of valve from certain distance from valve (within 5m), this is the type to open and
close the valve by semi-auto operation and changing the revolving direction of air motor by hand
valve and since there is no torque switch, auto stop is not available and manual operation is required.
(B1 TYPE)
(B2 TYPE)
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XXXLWBDPLS
3. Type C operation (Control room remote operation type) AOV: The open and close of valve can be
operated at site or control room and get the dry contact from position transmitter (built in limit switch)
and solenoid valve will be installed on main body or control panel for open and close operation. It
can be classified by the operation characteristic as follows.
C1 : This is the operation which outputs the dry contact by the attachment of position transmitter
(PT-00) on AOV and using the control panel (solenoid attached) which is located certain
distance from AOV main body.
C2 : Outputting the dry contact by the attachment of solenoid valve and position transmitter (PT-00)
on AOV, open and close operation on AOV are available and external operation also is
available when converts to remote mode.
(C1 TYPE)
(C2 TYPE)
4. Type D operation (control room open transmission type) AOV: Basically this is same as type C
but the difference is using the position transmitter (built in limit switch, R/I converter,
potentiometer) which is available for 4~20mA and output of dry contact.
D1 : Operate the valve by attaching the Solenoid valve on control panel and displays the open
status on it.
D2 : It is available to operate 4~20mA dry contact output and open, close operation on AOV,
and external operation also is available when converts to remote mode.
(D1 TYPE)
(D2 TYPE)
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XXXLWBDPLS
AOV Specification
TYPE
4AM
ITEM
6AM
16AM
Speed Reduction
Type
A
B
C
A
B
C
A
B
C
Out-put
Torque (kgf-m)
30
20
10
60
40
25
180
130
105
Setting
Torque(kgf-m)
20
14
8
40
30
20
160
100
85
Maximum Revolution
(rpm)
26
40
65
26
40
65
26
35
42
Gear
Ratio
100
68
40
100
68
40
74
56
46
AIR MOTOR
Maximum Revolution(RPM)
2800
2800
2000
Weight(kg)
36
40
150
Average Air Consumption(△P)
(NI/min)*2
850
1100
3200
Manual-Auto Shifting
Shifting Lever for Manual and Auto
Power Transmission Type
SPUR GEAR + WORM & WORM WHEEL
TORQUE SWITCH
OPEN, CLOSE (Optional)*1
INDICATOR &
LIMIT SWITCH
% TYPE GEARED LIMIT SWITCH
Material
Main
Body
CAST ALUMINIUM (AC4C-T6)
Speed
Reducing Gear
SCM 415 + Heat Treatment
Color/Painting
MUNSELL: 4.9B6.7/0.2(KOREA : E - 80680)/Powder Coating(Min. 60㎛)
Ambient
Temperature(℃)
-20℃ +80℃
Supply Air Pressure
(kg/㎠)
4.0 7.0
Grease
LITHIUM SOAP BASE EP-0 GREASE(KSM 2930)
Container Safety
Degree
IP66
* 1) Torque switch is not applicable B3 operation type
* 2) △P = 4.0 kgf/㎠ Standard
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AOV Instllation
▶ MULTI-TURN VALVE
GATE VALVE
(THRUST UNIT TYPE)
GATE VALVE
(BRACKET TYPE)
Y-GLOBEVALVE
(GEAR BOX TYPE)
▶ QUARTER-TURN VALVE
BALL VALVE
BUTTERFLY VALVE
11
PLUG VALVE
"JSNPUPSPQFSBUFEWBMWFBDUVBUPS
XXXLWBDPLS
AOV SIZE(Standard)
AIR MOTOR
TYPE
4AM
6AM
A, B
C, D
A, B
C, D
A
430
530
430
530
B
460
460
492
492
C
350
400
350
400
D
415
465
415
465
SIZE(㎜)
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XXXLWBDPLS
AOV SIZE(Large)
SIZE(㎜)
A
A1
A2
B
B1
B2
C
C1
A, B TYPE
500
375
125
880
527
353
526
359
C, D TYPE
540
415
125
880
527
353
526
359
TYPE
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XXXLWBDPLS
VALVE TORQUE CALCULATION
■ SCREWーOPERATED VALVE TORQUE CALCULATION
THRUST F=A△P.C + E……(kgf)
TORQUE T=K·F……………………(kgf-m)
A : CROSS SECTIONAL AREA OF VALVE
PORT(㎠) = π/ 4 (VALVE PORT DIAMETER)²
P : MAXIMUM DIFFERENTIAL (kg/㎠)……GENERALLY
MAXIMUM AT FULLY CLOSED VALVE POSITION
WHEN THE DIFFERENTAL IS LESS THAN 5kg/㎠
TAKE 5kg/㎠
C : VALVE FACTOR
E : GLAND FRICTION ALLOWANCE…………………(kg)
K : STEM FACTOR
▶TABLE 1. VALVE FACTOR(C)
VALVE FACTOR(C)
VALVE TYPE
LIQUID
GAS
BELOW 400℃
ABOVE 400℃
BELOW 400℃
ABOVE 400℃
PARALLEL SLIDE
0.25
0.3
0.35
0.45
WEDGE GATE
0.35
0.4
0.45
0.5
GLOBE
1.2
1.2
1.2
1.2
▶ TABLE 2. GLAND ALLOWANCES (E)
STEM DIA
GLAND ALLOWANCES (E)
BELOW 25㎜∮
25-50㎜∮
51㎜∮& ABOVE
400㎏
700㎏
1100㎏
▶ TABLE 3. STEM FACTOR (K)
LEAD OF SCREW
mm
STEM DIA. mm
3
5
6
7
8.5
10
19
0.0025
0.0028
0.0028
0.0032
0.0032
0.0037
25
0.0028
FACTOR(Ｋ)
0.0032
0.0037
0.0037
0.0041
0.0041
0.0048
32
0.0041
0.0041
0.0044
0.0044
0.0048
0.0053
38
0.0044
17
25
44
51
0.0048
0.0048
0.0053
0.0053
0.0057
0.0065
0.0081
44
0.0053
0.0057
0.0057
0.0060
0.0065
0.0076
0.0092
51
0.0060
0.0065
0.0065
0.0065
0.0069
0.0081
0.0097
57
0.0065
0.0069
0.0069
0.0073
0.0076
0.0089
0.0098
64
0.0073
0.0073
0.0076
0.0076
0.0081
0.0092
0.0105
70
0.0080
0.0081
0.0081
0.0085
0.0089
0.0101
0.0117
78
0.0085
0.0085
0.0089
0.0089
0.0092
0.0105
0.0121
83
0.0089
0.0092
0.0092
0.0097
0.0101
0.0113
0.0129
89
0.0107
0.0105
0.0121
0.0129
0.0161
94
0.0109
0.0113
0.0125
0.0141
0.0170
102
0.0113
0.0117
0.0129
0.0145
0.0173
0.0202
108
0.0121
0.0125
0.0138
0.0154
0.0182
0.0205
0.0194
114
0.0125
0.0133
0.0141
0.0157
0.0186
0.0214
121
0.0133
0.0138
0.0149
0.0166
0.0194
0.0218
127
0.0138
0.0143
0.0159
0.0170
0.0198
0.0226
133
0.0143
0.0149
0.0161
0.0177
0.0205
0.0230
140
0.0149
0.0154
0.0166
0.0182
0.0210
0.0239
147
0.0161
0.0166
0.0177
0.0194
0.0223
0.0250
0.0189
0.0205
0.0234
0.0262
160
● NOTE
12.5
THE ABOVE FORMULA IS GUIDANCE ONLY IN SIZING THE ACTUATORS.
THE FACTORS GIVEN ABOVE SHALL BE A BIT DIFFERRENT FORM THOSE OF EACH VALVE MANUFACTURER.
PLEASE REFER USE DETAILS TO VALVE MANUFACTURER.
K = Dm/2(tanβ+ρ))
where Dm=D-P/2, β=tan-1(L/πDm), ρ=tan-1·m
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XXXLWBDPLS
■ GATE VALVE TORQUE CALCULATION TABLE
FLANGE RATING
ANSI 150#
(△P=10)
ANSI 300#
(△P=20)
ANSI 600#
(△P=42)
ANSI 900#
(△P=63)
ANSI 1500#
(△P=105)
ANSI 2500#
(△P=176)
2
1.3
1.4
1.8
3.2
4.9
6.3
1/2
1.3
1.6
2.7
4.6
6.8
9.8
3
1.8
2.3
3.9
5.3
8.7
11.5
4
2.7
3.6
6.3
8.6
15.3
18.3
5
3.3
4.6
-
-
23.4
-
6
4.3
6.7
15.7
21.2
33.7
44.5
8
6.0
12.1
22.7
35.3
53.0
94.2
10
10.1
18.3
37.3
56.3
94.3
160.1
12
14.2
26.0
53.1
79.1
134.1
218.9
14
16.8
32.4
63.7
102.1
188.1
263.5
16
22.9
42.1
96.1
112.3
267.6
382.1
18
28.5
54.5
117.9
196.1
283.9
584.0
20
36.4
69.6
153.2
254.7
473.5
890.5
24
54.5
117.0
234.9
419.3
675.9
1762.1
26
70.9
144.9
28
82.0
182.1
30
94.2
225.0
32
104.2
244.3
36
134.3
282.3
40
160.1
301.3
42
209.1
383.8
48
249.4
603.8
52
304.4
745.0
SIZE(inch)
2
* For valve company s reference only. There could be a difference in torque values of valves in use.
* Unit of △P : kgf/㎠
* Unit of torque : kgf·m
* Torque value of the stem (measured before attaching to gear box)
* Meets the ANSI general requirements unless specified
* Temperature : ANSI 150, 300, 600, 900 : 400℃ Max.
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XXXLWBDPLS
■ GLOBE VALVE TORQUE CALCULATION TABLE
FLANGE
RATING
ANSI 150#
(△P=10)
ANSI 300#
(△P=20)
ANSI 600#
(△P=42)
ANSI 900#
(△P=63)
ANSI 1500#
(△P=105)
ANSI 2500#
(△P=176)
2
1.7
2.3
4.6
8.3
12.3
24.8
1/2
2.0
3.6
7.1
11.5
17.6
30
3
2.8
5.3
10.8
16.1
29.9
40
4
4.8
9.6
17.7
29.1
46.0
81.6
5
6.6
18.2
33.3
47.2
-
-
6
15.0
27.7
46.9
71.4
130.7
182.6
8
20.3
49.0
87.1
129.9
147.6
430.0
10
33.7
77.2
169.3
329.9
297.6
773.3
12
40.2
101.2
289.4
509.4
573.0
1224.2
14
69.1
137.5
16
92.8
191.5
SIZE(inch)
2
* ANSI 900, 1500, 2500 lbs are combined data of 3 makers, and there could be a difference.
* Unit of △P : kgf/㎠
* Unit of torque : kgf·m
* Torque value of the stem
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XXXLWBDPLS
■ BALL VALVE TORQUE CALCULATION TABLE
FLANGE
RATING
ANSI 150#
(△P=10)
ANSI 300#
(△P=20)
ANSI 600#
(△P=42)
ANSI 900#
(△P=63)
2
3.3
5.8
14.5
23.2
3
10.2
14.9
28.3
46.8
4
19.6
25.0
49.7
84.1
6
49.7
78.3
94.3
152.2
8
94.2
156.3
166.7
272.5
10
126.9
169.6
284.1
463.8
12
156.6
239.2
463.8
753.8
14
218.9
351.5
672.5
1043.5
16
313.1
489.9
898.6
1460.9
18
407.3
649.3
1147.9
1981.9
20
521.8
834.8
1460.9
2608.7
SIZE(inch)
* Refer to 2 Seat General Trunion Ball Valve
* Unit of △P : kgf/㎠
* Unit of torque : kgf·m
* Torque value of the stem measured before attaching to Worm Gear Box
* Domestic makers data. Could be different depending on the maker, and applicable for new valve.
* Plug Valve is also similarly applicable to Ball Valve.
17
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XXXLWBDPLS
■ BUTTERFLY VALVE TORQUE CALCULATION TABLE(KSB 2333)
[kgf · m(N · m)]
MINIMUM OPERATING TORQUES
VALVE
Valve nominal
diameter
(㎜)
Pressure drop 10kg/㎠
Pressure drop 7.5kg/㎠
Pressure drop 4.5kg/㎠
Velocity 3m/s
6m/s
Velocity 3m/s
6m/s
Velocity 3m/s
6m/s
200
21.4(209.72)
21.4(209.72)
15.4(150.92)
15.4(150.92)
8.0(78.40)
8.0(78.40)
250
38.5(375.34)
38.5(375.34)
26.5(259.70)
26.5(259.70)
14.0(137.20)
14.0(137.20)
300
61.9(606.62)
61.9(606.62)
43.4(425.32)
43.4(425.32)
22.4(219.52)
22.4(219.52)
350
90.9(896.82)
90.9(896.82)
64.0(627.20)
64.0(627.20)
33.5(323.30)
33.5(323.30)
400
137.0(1342.60)
137.0(1342.60)
90.1(882.98)
90.1(882.98)
47.7(467.46)
47.7(467.46)
450
186.0(1822.80)
186.0(1822.80)
122.0(1195.60)
122.0(1195.60)
65.5(641.90)
65.5(641.90)
500
247.0(2420.60)
247.0(2420.60)
175.0(1715.00)
175.0(1715.00)
87.3(855.54)
87.3(855.54)
600
403.0(3949.40)
403.0(3949.40)
272.0(2665.60)
272.0(2665.60)
147.0(1440.60)
147.0(1440.60)
613.0(6007.40)
613.0(6007.40)
420.0(4116.60)
420.0(4116.60)
218.0(2136.40)
218.0(2136.40)
887.0(8692.60)
887.0(8692.60)
614.0(6017.20)
614.0(6017.20)
325.0(3185.00)
325.0(3185.00)
860.0(8428.00)
860.0(8428.00)
465.0(4557.00)
465.0(4557.00)
700
800
900
1230.0(12054.72) 1230.0(12054.72)
1000
1660.0(16268.00) 1660.0(16268.00) 1170.0(11466.00) 1170.0(11466.00)
614.0(6017.20)
614.0(6017.20)
1100
2240.0(21952.00) 2240.0(21952.00) 1540.0(15092.00) 1540.0(15092.00)
824.0(8075.20)
824.0(8075.20)
1200
2870.0(28126.00) 2870.0(28126.00) 1990.0(19502.00) 1990.0(19502.00) 1040.0(10192.20) 1040.0(10192.20)
1350
4010.0(39293.00) 4010.0(39293.00) 2730.0(26754.00) 2730.0(26754.00) 1460.0(14308.00) 1460.0(14308.00)
1500
5430.0(53214.00) 5430.0(53214.00) 3740.0(36652.00) 3740.0(36652.00) 2040.0(19992.00) 2040.0(19992.00)
● Note : The above data are based on the butterfly valves for the water works (KSB-2333)
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XXXLWBDPLS
Standard table for AOV MODEL selection
VALVE SPECIFICATION
AOV SPECIFICATION
AOV
AIR MOTOR
ACTUATOR
PRODUCT NAME
GEAR BOX
N : N/A(NOT AVAILABLE)
V : BEVEL
W : WORM
S : SPUR
VALVE SIZE
01 : 1(25A)
40A : 1/2(40A)
02 : 2(50A)
40:40(1000A)
AIR MOTOR SIZE
4 : 4AM(1.5HP)
6 : 6AM(4.0HP)
16 : 16AM(10.0HP)
VALVE TYPE
G : GATE
L : GLOBE
B : BALL
U : BUTTERFLY
(DAMPER)
P : PLUG
E : OTHERS
AOV GEAR SPEED
REDUCING RATIO
A : A SPEED REDUCING
B : B SPEED REDUCING
C : C SPEED REDUCING
FLANGE RATING
1 : JIS 10K. ANSI 150
2 : JIS 20K. ANSI 300
3 : JIS 30K. ANSI 600
4 : ANSI 900
5 : ANSI 1500
6 : ANSI 2500
7 : OTHERS
AOV OPERATION
TYPE
(REFER TO PAGES 8~9)
A : A OPERATION TYPE
B1: B1 OPERATION TYPE
B2: B2 OPERATION TYPE
B3: B3 OPERATION TYPE
C1: C1 OPERATION TYPE
C2: C2 OPERATION TYPE
D1: D1 OPERATION TYPE
D2: D2 OPERATION TYPE
(Ex.) AOV08G1N-6AA : This stands for the actuator equipped with 8 inch ANSI 150LBS Gate Valvewithout gear box and 4.0HP Air
Motor, and valves should be operated in the field.
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Major Products
1. VALVE ACTUATOR
· AOV (AIR MOTER OPERATED VALVE ACTUATOR)
· MOV (MOTER OPERATED VALVE ACTUATOR)
· POV (PNEUMATIC CYLINDER OPERATED VALVE ACTUATOR)
2. VALVE
· GATE, GLOBE VALVE
· BALL, BUTTERFLY, PLUG VALVE
· DIAPHRAGM VALVE
Distributor/Dealer
?J57c" @hX"
Head Office & Factory : #359-2, Jukam-Ri,
Hyeondo-Myeon, Cheongwon-Gun, Chungbuk, Korea
TEL. 82-43-269-2692 / FAX. 82-43-269-2666
Home Page : http://www.kva.co.kr
E-mail : kva@kva.co.kr
20911 Rev. 1