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High Efficiency Valve Gearbox
Efficiency?gains?are?achieved?through?multi-start,?while?using?the?latest?Gearbox?Backstop?patent?to?allow?the?gearbox?to?be?locked.
The?overall?efficiency?of?the?gearbox?is?increased?by?200%?to?300%?while?optimising?costs.
Conventional worgears need to take into account the self-locking characteristics and must maintain an inherent machining angle. STARD AUTOMATION utilizes a patented locking device called Backstop to make high efficiency wormgears self-locking.
Electric applications can be optimised with STARD high efficiency worm gears for faster shutdown times. Manual applications can also be optimised for fewer operating turns, larger manually operated valve pass diameters and lower installation and maintenance costs.
Manual?Application,?Optimized?Turns?to?Operate
? Required Gearbox
Output?Torque(NM)Gearbox
RatioGearbox
Mechanical
AdvantageGearbox
EfficiencyHandwheel
Diameter(MM)Turns?to
OperateStandard?Efficiency?
Wormgear32000700:116825.00%800175High?Efficiency?
Wormgear? ?32000408:121351.00%800102
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Linear Pneumatic Actuator Manual Override
MVS Series
Pneumatic Actuator Manual Override
Multi-turn gearbox with worm gear construction. Used for manual operation of linear pneumatic actuators in case of loss of power source. Can be mounted between the pneumatic actuator and the valve, or on top of the pneumatic actuator.
Thrust range: 50KN~150KN
3 sizes. Ratios from 22:1 to 50:1
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SB Bevel Electric Gear Operator Gearbox
SB series multi-turn gear operators
This gear operator series is made of cast steel and the optional material is HT. Bronze, D2 and QT nuts are available to fit in with the valve stem. This series is suitable for use on linear-motion valves including gate valves and globe valves, with the single-stage speed ratio varying from 2.3:1 to 8:1 and the torque from 216NM to 6800NM.
Products can be used for gate valve, stop valve and other linear movement of the valve, widely used in chemical, food and beverage, metallurgy, offshore platform, pharmaceutical, energy, oil and gas, paper and textile, fire, water conservancy and other industries.
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Bevel Gearbox Multi-turn Gear Operator
SB series multi-turn gear operators
This gear operator series is made of cast steel and the optional material is HT. Bronze, D2 and QT nuts are available to fit in with the valve stem. This series is suitable for use on linear-motion valves including gate valves and globe valves, with the single-stage speed ratio varying from 2.3:1 to 71.1:1 and the torque from 220NM to 13500NM.
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Underground Pipe Valve Gearbox Buried Applications
This series consists of 6 models varying from 182:1 to 780:1 in terms of gear ratio and from 1500NM to 15000NM in terms of torque.
The input stage can be adjusted by 90° and can be operated with a choice of handwheel or T-stem, usually used for valves in underground pipeline networks (e.g. butterfly valves, ball valves, etc.)
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Cast Steel Quarter-Turn Gearbox
This single-stage gear operator series with cast steel box is widely used in gas, oil, chemical plants, and nuclear power plants and for general industrial applications, with the torque ranging from 1000NM to 72000NM and the speed ratio from 30:1 to 1728:1.
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Ductile Iron Declutch Gearbox
SLJ DI range
Declutchable Manual Override
Suitable for spring-return or double-acting pneumatic actuators. Used to drive part-turn valves such as ball valves, butterfly valves, and plug valves. Compared to the previous generation of SLJ products, the top bracket has been raised to make installation easier, while a lightweight design has been implemented to achieve cost optimisation.
Torque range: 300Nm~1200Nm
3 sizes. Ratios from: 35:1 to 54:1
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Aluminium Alloy Quarter-Turn Manual Gearbox
SD series partial-turn gear operators adopt a cast aluminum casing and are suitable for conventional industrial applications in power supply, hydro-electric generation, fire fighting, and HVAC systems.
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Cast iron Quarter-Turn Gear Operator
S008 Series Valve Gearboxes
This series consists of 14 models varying from 42:1 to 3525:1 in terms of gear ratio and from 720NM to 150000NM in terms of torque.
- Quarter turn gearbox designed to use for the manual Installation, maintenance, and operation of valves (e.g. butterfly/ball/plug valves) in pipelines.
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Aluminium Alloy Declutchable Gearbox
This series consists of 3 models with the speed ratio varying from 26:1 to 54:1 and the toque ranging from 300NM to 1200NM. The torque difference between every two adjacent models is small, helping to save a lot of costs for customers when selecting a specific product.
The Declutch Gearbox is specially designed for butterfly valve, ball valve & plug valve together with pneumatic actuator.
This device allows manual operation during installing, system testing if when air resource is not loaded.
It can mounted directly on most of the popular rack & pinion style pneumatic actuators in the market.
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SJ Single Stage Handwheel gear operators
SJ single-stage models have a speed ratio from 24:1 to 80:1 and torque from 170NM to 2000NM.
- Quarter turn gearbox designed to use for the manual Installation, maintenance, and operation of valves (e.g. butterfly/ball/plug valves) in pipelines.
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SLJ WCB Declutchable Gearbox Gear Operators
This series consists of eight models with the speed ratio varying from 26:1 to 520:1 and the toque ranging from 300NM to 22000NM. The torque difference between every two adjacent models is small, helping to save a lot of costs for customers when selecting a specific product.
The Declutch Gearbox is specially designed for butterfly valve, ball valve & plug valve together with pneumatic actuator.
This device allows manual operation during installing, system testing if when air resource is not loaded.
It can mounted directly on most of the popular rack & pinion style pneumatic actuators in the market.
