Dwyer Instruments MGO-4T | Gear operator | Works with 8" size BFV Series butterfly valves | Min. output torque 4425 in-lbs. (500 N m) | Max. output torque 6196 in-lbs. (700 N m)
The Dwyer MGO-4T is a rugged, cast iron gear operator designed for 8" BFV Series butterfly valves, delivering 4425 to 6196 in-lbs (500 to 700 N·m) of output torque. It is built for heavy-duty on-off or throttling service and features a self-locking worm gear mechanism, weatherproof construction, field-adjustable travel stops, and a visible valve position indicator.
Genuine Control Techniques stock · Free UAE-wide shipping
Part Number: MGO-4T
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Product Overview
The Dwyer MGO-4T is part of the Series MGO range of manual gear operators designed for heavy-duty operation of valves and dampers, including Dwyer's BFV Series butterfly valves. This model is specifically sized for 8" BFV Series butterfly valves.
The MGO-4T provides an output torque range of 4425 to 6196 in-lbs (500 to 700 N·m). It uses a 30:1 gear ratio and provides a mechanical advantage of 8.1, giving operators the mechanical leverage needed for manual operation of compatible large butterfly valves.
The gear operator is self-lubricated for smooth, trouble-free operation. Its rugged cast iron housing with O-ring body seals provides weatherproof construction suitable for indoor or outdoor installation.
A self-locking worm and worm gear holds the valve in the desired position without drifting. The accessible hand wheel provides manual control, while the integrated valve position indicator makes it easier to confirm the valve's position during operation.
The MGO-4T also incorporates mechanical travel stops that can be adjusted in the field to control the required degrees of valve rotation. This feature is useful for applications where controlled opening or throttling positions are required.
When sizing the gear operator, divide the required valve torque by the MGO-4T's 8.1 mechanical advantage to determine the required input torque. The input torque can then be divided by the hand wheel radius to determine the required hand wheel rim effort.
Key Benefits
- Designed for 8" BFV Series butterfly valves
- Output torque from 4425 to 6196 in-lbs (500 to 700 N·m)
- 30:1 gear ratio with 8.1 mechanical advantage
- Self-lubricated for smooth, trouble-free operation
- Rugged, weatherproof cast iron housing with O-ring body seals
- Self-locking worm and worm gear prevents valve-position drift
- Accessible hand wheel for manual operation
- Built-in valve position indicator
- Field-adjustable mechanical travel stops
- Suitable for heavy-duty on-off and throttling service
- Genuine Dwyer stock with free UAE-wide shipping
Who This Product Is Best For
The Dwyer MGO-4T is suited for:
- Manual actuation of 8" BFV Series butterfly valves
- Heavy-duty on-off valve applications
- Throttling applications requiring controlled valve positioning
- Indoor or outdoor valve installations
- Applications requiring weatherproof manual valve operation
- Systems requiring a self-locking gear operator
- Installations where field-adjustable travel stops and visible valve position indication are required
How to Specify & Commission It
- Confirm that the MGO-4T matches the 8" BFV Series butterfly valve and its required operating torque.
- Divide the valve's required torque by the 8.1 mechanical advantage to determine the required input torque.
- Divide the input torque by the hand wheel radius to determine the required hand wheel rim effort.
- Mount the gear operator to the valve stem according to the manufacturer's installation instructions.
- Adjust the mechanical travel stops to the required degrees of valve rotation.
- Operate the valve using the hand wheel and confirm its position using the integrated valve position indicator.
Frequently Asked Questions
What valve size does the MGO-4T work with?
The MGO-4T is designed for 8" BFV Series butterfly valves.
What torque range does the MGO-4T deliver?
It delivers an output torque range of 4425 to 6196 in-lbs (500 to 700 N·m).
What is the gear ratio of the MGO-4T?
The MGO-4T has a 30:1 gear ratio and a mechanical advantage of 8.1.
How do I size the MGO-4T for my valve?
Divide the required torque of the selected valve by the MGO-4T's 8.1 mechanical advantage to determine the required input torque. Then divide the input torque by the hand wheel radius to determine the required rim effort.
Is the MGO-4T suitable for outdoor use?
Yes. The rugged cast iron housing with O-ring body seals is designed for weatherproof indoor or outdoor installation.
Does the MGO-4T hold the valve position without drifting?
Yes. The self-locking worm and worm gear mechanism holds the valve in the selected position without drifting.
Can the travel stops be adjusted?
Yes. The mechanical travel stops can be adjusted in the field to set the required degrees of valve rotation.
What materials are used in the MGO-4T?
The MGO-4T uses a cast iron housing, hardened steel internals, and NBR seals. It has a Square ISO male keyway and weighs 28.6 lb (13 kg).
Is genuine stock available with UAE-wide shipping?
Yes. Genuine Dwyer stock with free UAE-wide shipping is available from General Tech Services LLC. Call +971 6 5436933 for pricing and current availability.
Request a Quote Today
For pricing, stock availability, or technical assistance with the Dwyer MGO-4T gear operator, contact General Tech Services LLC.
Call: +971 6 5436933
Website: www.generaltechshop.ae
