Electric ball valve actuator Limitorque®

quarter-turnsingle-phasethree-phase

Overview
The Limitorque® LQI compact intrusive quarter-turn actuator provides reliable electric quarter-turn valve operation with flexible control and feedback options. Designed for industrial use, it supports demanding duty cycles while simplifying installation and maintenance.

Features and Benefits

• Clutchless handwheel override maintains valve operation during power loss, preventing unplanned downtime
• Clear mechanical indicator gives immediate visual valve position for safer operation
• Standard control and auxiliary switches ease automation integration and reduce commissioning time
• Self-locking, lubricated drive ensures smooth, maintenance-free operation and consistent performance
• Compact, service-friendly housing simplifies maintenance access and supports up to 75% duty cycle

Specifications
Standards
IP67/68
CSA
CSAus
ATEX II 2 GD
IECEx
Temperature
-30°C to +65°C (-22°F to +149°F)
Size Range
35 - 4,500 Nm
310 - 40,000 in-lb (weather-proof)
35 - 1,500 Nm
310 - 1,3290 in-lb (explosion-proof)
Configurations

• 2/3/4 wire discrete controls
• Mod 4-20 mA — in & out
• NCU or push-button options
• 12/24 V AC, 12/24 V DC, 1 PH or 3 PH 50/60 Hz up to 480 V
• Modbus control option
• Up to C5 corrosion resistance

Industries

• Power
• Chemicals
• Water
• Oil & Gas
• General industries

Technical specifications

• Product family: Limitorque® LQI Compact Intrusive Quarter-Turn Actuator
• Operation: Electric quarter-turn actuator with multiple control and feedback options
• Enclosure / Protection: IP67/68
• Certifications: CSA, CSAus, ATEX II 2 GD, IECEx
• Operating temperature range: -30°C to +65°C (-22°F to +149°F)
• Size / Torque range (weather-proof): 35 - 4,500 Nm (310 - 40,000 in-lb)
• Size / Torque range (explosion-proof): 35 - 1,500 Nm (310 - 1,3290 in-lb)
• Duty cycle: supports up to 75% duty cycle
• Drive: self-locking, lubricated drive (maintenance-free)
• Manual override: clutchless handwheel override
• Position indication: clear mechanical indicator
• Control options: 2/3/4 wire discrete, Mod 4-20 mA in/out, NCU or push-button, Modbus option
• Power options: 12/24 V AC, 12/24 V DC, single- or three-phase 50/60 Hz up to 480 V
• Corrosion resistance: up to C5
• Typical applications: quarter-turn valve actuation for water, power, chemical, oil & gas and general industry