Non-Intrusive Quarter-Turn Actuators - QX

The Flowserve Limitorque QX, non-intrusive electric actuator is designed for a wide range of environmental applications in power, oil & gas, and water industries. The QX design builds on more than 20 years of proven MX technology to provide all the user-preferred features in a quarter-turn smart actuator package.

Product Highlights

Industries

General Industry
Chemicals
Water
Oil & Gas
Power

Industry Sectors

Pulp & Paper
Mining
Steel & Primary Metals
Food & Beverage
Other Industries
Basic (Organic & Inorganic)
Specialty (Fine & Consumer)
Biofuels
Pharmaceutical
Petrochemicals
Water
Waste Water
Agriculture
Water Management
Upstream Exploration & Production
Midstream Transportation
Downstream Processing
Nuclear
Conventional Steam
Geothermal
Combined Cycle
Concentrated Solar Power (CSP)
Biomass and MSW

Standards

All global explosion proof certifications
Meets pertinent European Directives (CE mark)
Designed to meet EN-15714
AWWA C540

Design Range

Torque Rating Range: From 40 to 1500 ft-lbs output torque

Features and Benefits

Greater process control with non-contacting absolute encoders that provide accurate position sensing
B.I.S.T., built-in self-test which never needs batteries to retain position data, even in the event of main power loss
Extreme environment performance made possible by non-intrusive design, 100% solid-state controls, and reliable digital communication control system
Versatility provided by flexible control configurations, setup and diagnostics in 11 languages, and advanced brush-less DC motor that supports most global voltages, AC or DC
100% repeatable and redundant absolute encoder for position sensing
Electronic torque switch
3-phase, 1-phase, and DC motors

Configurations

Non-intrusive, 100% solid-state, standard open-close applications

Non-intrusive, 100% solid-state, modulating to 1800 starts per hour to EN 15714, Class D - Continuous duty

Non-intrusive, 100% solid-state, network applications - Modbus, Foundation Fieldbus, HART, DeviceNet, Profibus DP w/ redundancy and Profibus PA

Training

Flowserve Limitorque offers practical product training at our global automation headquarters in Lynchburg, Va., and our state-of-the-art valve automation center in Houston. Taught by qualified instructors in classroom settings, these three-day courses emphasize hands-on training. Key topics include the principles of actuator functionality as well as actuator setup and commissioning, maintenance and troubleshooting. View available courses and dates.