Quarter Turn Worm Gearbox – Hand Wheel Operated

The Quarter Turn Worm Gearbox – Hand Wheel Operated is a robust, export-quality manual valve actuator designed for smooth and reliable operation of ball valves, butterfly valves, and plug valves in both domestic and international markets.

Manufactured by Relekon Automation, this gearbox is engineered for long service life, operational safety, and consistent performance, making it suitable for OEM integration, EPC projects, and large-scale industrial supply.

Precision machining and high-grade materials ensure high torque output with minimal manual effort, enabling safe and controlled quarter-turn valve operation even in demanding applications.

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Selection Chart: Quarter Turn Worm Gearbox – Hand Wheel Operation (RA Series)

Model	Torque (Nm)	Mech. Adv. (±10%)	Gear Ratio	Turns to Close	ISO 5211 Mounting	Handwheel (mm)	Weight (kg)
RA – W125	125	8	40 : 1	10	F05	Ø150	1
RA – W250	250	8	33 : 1	8	F05, F07	Ø200	2.5
RA – W500	500	10	40 : 1	10	F07, F10	Ø250	4.5
RA – W700	700	10	40 : 1	10	F10, F12	Ø350	7
RA – W1000	1000	12	44 : 1	12	F12, F14	Ø350	10
RA – W1500	1500	14	48 : 1	12	F14	Ø350	10
RA – W2200	2200	16	55 : 1	15	F14, F16	Ø350	16
RA – W3500	3500	20	73 : 1	20	F16	Ø500	23
RA – W5000	5000	50	90 : 1	66	F16	Ø500	30
RA – W5500	5500	65	90 : 1	66	F16, F25	Ø500	40
RA – W7000	7000	70	150 : 1	73	F16, F25	Ø600	50
RA – W10000	10000	75	300 : 1	80	F25, F30	Ø600	75

Technical Specifications

Parameter	Specification
Operation Type	Manual – Hand Wheel
Rotation Angle	90° (Quarter Turn)
Gear Mechanism	Worm & Worm Wheel
Self Locking	Yes
Direction of Operation	Clockwise / Counter-clockwise
Efficiency	Optimized for manual operation

Torque Range

Key Features

Self-locking design ensures valve holding without back-drive
Low hand-wheel operating torque
Grease-lubricated system for long service life
Bearings-supported shaft assembly
Locking arrangement available
Optional horizontal hand-wheel orientation

Lubrication

Environmental Conditions

Parameter	Rating
Ambient Temperature	-20°C to +80°C
Protection	Weather-resistant coating
Corrosion Protection	Epoxy / Powder Coated (Optional)
Indoor / Outdoor Use	Suitable for both

Applications

Ball Valves
Butterfly Valves
Plug Valves
Damper Control Systems
Water & Wastewater Treatment
Oil & Gas Pipelines
Chemical & Process Industries
Power Plants

Optional Accessories

EXPORT & SUPPLY CAPABILITY

Relekon Automation supplies quarter turn worm gearboxes to customers across India, the Middle East (GCC), and European markets, supporting end users, OEMs, EPC contractors, and distributors with export-ready solutions.

Export Highlights

Suitable for high-temperature & outdoor GCC conditions
Compatible with international valve standards
Export-grade packaging (wooden crates / pallets on request)
OEM branding & private labelling available
Pre-dispatch inspection & export documentation support

Certified for Quality & Global Trade

We are committed to excellence and international standards. These certifications validate our quality management and authorized trade operations.

ISO 9001:2015 Certified Officially certified by QRO for our Quality Management System. This ensures the highest standards in manufacturing and exporting standard and customized gearboxes, automation valves, and actuators.
Government Authorized Importer-Exporter (IEC) Registered with the Ministry of Commerce & Industry (DGFT), Government of India. This certification authorizes Relekon Automation to engage in seamless international import and export operations.