quarter turn electric actuator - inko.com.sginko.com.sg/image/data/catalog/valve/electric...
TRANSCRIPT
![Page 1: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/1.jpg)
Quarter turn
Electric actuator
![Page 2: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/2.jpg)
![Page 3: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/3.jpg)
![Page 4: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/4.jpg)
![Page 5: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/5.jpg)
![Page 6: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/6.jpg)
![Page 7: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/7.jpg)
![Page 8: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/8.jpg)
Quarter turn electric actuator
![Page 9: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/9.jpg)
Modulating Quarter turn electric actuator
![Page 10: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/10.jpg)
Quarter turn
Electric actuator
![Page 11: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/11.jpg)
Quarter turn motorized actuator
![Page 12: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/12.jpg)
Quarter turn motorized actuator
![Page 13: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/13.jpg)
Quarter turn motorized actuator
Local control
station
Mechanical stopper
(travel limit)
![Page 14: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/14.jpg)
Quarter turn motorized actuator
![Page 15: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/15.jpg)
Quarter turn motorized actuator
![Page 16: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/16.jpg)
Quarter turn motorized actuator
![Page 17: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/17.jpg)
Quarter turn motorized actuator
![Page 18: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/18.jpg)
Quarter turn motorized actuator
![Page 19: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/19.jpg)
Quarter turn motorized actuator
![Page 20: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/20.jpg)
Quarter turn motorized actuator
![Page 21: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/21.jpg)
Quarter turn motorized actuator
![Page 22: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/22.jpg)
Quarter turn motorized actuator
![Page 23: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/23.jpg)
Quarter turn motorized actuator
![Page 24: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/24.jpg)
Linear (multi-turn)
Electric actuator
GATE VALVE BALL VALVE
![Page 25: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/25.jpg)
MULTI TURN ELECTRIC ACTUATOR
(also can be used for big sizes of ball, butterfly & plug valve)
![Page 26: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/26.jpg)
MULTI TURN ELECTRIC ACTUATOR
![Page 27: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/27.jpg)
MULTI TURN ELECTRIC ACTUATOR ON-OFF duty
![Page 28: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/28.jpg)
MULTI TURN ELECTRIC ACTUATOR
![Page 29: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/29.jpg)
MULTI TURN ELECTRIC ACTUATOR
![Page 30: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/30.jpg)
MULTI TURN ELECTRIC ACTUATOR
![Page 31: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/31.jpg)
MULTI TURN ELECTRIC ACTUATOR
![Page 32: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/32.jpg)
MULTI TURN ELECTRIC ACTUATOR
![Page 33: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/33.jpg)
Mounting linear motorized actuator
![Page 34: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/34.jpg)
Mounting linear motorized actuator
![Page 35: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/35.jpg)
Gate valve data
![Page 36: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/36.jpg)
Gate valve data
![Page 37: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/37.jpg)
Gate valve stem data The Acme thread was developed sometime in the second half of the nineteenth century as a profile
well suited to power screws that has various advantages over the square thread, which had been
the form of choice until then. It is easier to cut via either single-point threading or die than the
square thread is (because the latter's shape requires tool bit or die tooth geometry that is poorly
suited to cutting); it wears better than square (because the wear can be compensated for); it is
stronger than a comparably sized square thread; and it makes for smoother engagement of the half
nuts on a lathe leads crew than square does. The Acme thread form name appears as early as
1895.
Acme screw threads are now extensively used for a variety of purposes. Long-length Acme threads
are used for controlled movements on machine tools, testing machines, jacks, aircraft flaps, and
conveyors.
Short-length threads are used on valve stems, hose connectors, bonnets on pressure cylinders,
steering mechanisms, and camera lens movement
![Page 38: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/38.jpg)
Sizing linear motorized actuator to gate valve
For example:
8” gate valve class 150
Valve’s stem diameter = 32 mm
Number of turns = 43 turns
Thrust = 28.8 KN
Torque = 85.5 NM
![Page 39: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/39.jpg)
Sizing linear motorized actuator to gate valve
We choose Rotork linear electric actuator
model IQ-20
With 36 RPM actuator speed, the actuator
torque = 203 NM >>> more than 85.5 NM
So the actuator timing to open/close = 43
turns x 60/36 = 71.7 seconds
![Page 40: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/40.jpg)
Sizing linear motorized actuator to gate valve
![Page 41: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/41.jpg)
Sizing linear motorized actuator to gate valve
The Rotork actuator model IQ-20 has
mounting dimension of F14
We use the group “A” coupling (for rising
stem), the coupling diameter = 38 mm
>>> more than 32 mm of the gate valve’s
stem diameter
The thrust rating of model IQ-20 = 100 KN
>>> more than 28.8 KN of the gate valve
thrust
So the complete model of Rotork linear
electric actuator is IQ20-F14-A
![Page 42: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/42.jpg)
Sizing linear motorized actuator to gate valve
![Page 43: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/43.jpg)
Drive coupling
![Page 44: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/44.jpg)
SIZING
ROTORK IQ SERIES
MULTI TURN
ELECTRIC ACTUATOR
INTO A
BIG GATE VALVE
![Page 45: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/45.jpg)
Sizing linear motorized actuator to big gate valve
For example: 24” gate valve class 300 Torque = 2,451 NM, with 30 % safety factor torque = 1,3 x 2,451 = 3,186 NM Thrust = 408 KN Stem diameter = 2-1/2 mm Number of turns = 64 turns
![Page 46: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/46.jpg)
The model IQ-95 can
stand 3,000 NM only !!!!!
So we have to use IQ
multiturn electric
actuator with:
ADDITIONAL bevel gear
model IB.
Sizing linear motorized actuator to big gate valve
![Page 47: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/47.jpg)
For example:
We choose model IQ-70, at 48 RPM, the torque = 1,020 NM
Sizing linear motorized actuator to big gate valve
![Page 48: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/48.jpg)
Sizing linear motorized actuator to big gate valve
With coupling A, thrust of
actuator model IQ-70 = 220 KN
![Page 49: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/49.jpg)
Sizing linear motorized actuator to big gate valve
The model IQ-70 electric actuator has an ISO-5210
dimension of F25
![Page 50: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/50.jpg)
Multi-Turn gearbox
![Page 51: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/51.jpg)
MULTI TURN ELECTRIC ACTUATOR
![Page 52: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/52.jpg)
Multi-Turn gearbox
![Page 53: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/53.jpg)
Sizing linear motorized actuator to big gate valve
ACME thread
of valve stem
(output)
ISO-5210
Flange
To actuator
(input)
![Page 54: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/54.jpg)
Sizing linear motorized actuator to big gate valve
For example:
We choose the IB-10 gear box
Input ISO-5210 flange from actuator = F25
Output flange to valve = F25
![Page 55: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/55.jpg)
Sizing linear motorized actuator to big gate valve
The IB-10 gear box:
Max ACME thread = 3-3/8” >>> more than 2-1/2” ACME thread of the gate valve
![Page 56: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/56.jpg)
Sizing linear motorized actuator to big gate valve
![Page 57: Quarter turn Electric actuator - inko.com.sginko.com.sg/image/data/CATALOG/Valve/Electric actuator.pdf · Gate valve stem data The Acme thread was developed sometime in the second](https://reader030.vdocuments.site/reader030/viewer/2022021802/5b5e55147f8b9a8b4a8c1cf1/html5/thumbnails/57.jpg)
Sizing linear motorized actuator to big gate valve
24” gate valve class 300
Torque = 2,451 NM with 30 % safety factor torque = 1,3 x 2,451
= 3,186 NM
Thrust = 408 KN
We choose motorized actuator model IQ-70 at 48 RPM, the
torque = 1,020 NM
We choose IB-11 gear model
Nominal ratio = 4
Motorized output torque = 4,067 Nm > 1,020 NM
Valve’s thrust maximum = 500 KN > 408 KN
Nominal advantage = 3.85
Motorized actuator torque + IB-20 gear becomes:
(3.85 x 1,020 NM) = 3,927 NM > gate valve’s torque 3,186 NM