MXFS / QXFS – Fail Safe Actuator
Limitorque
MXFS / QXFS – Fail Safe Actuator
The MXFS/QXFS electrically operated, mechanical fail-safe actuators from Flowserve are engineered for critical applications requiring reliable and precise valve shutdowns. Designed for use in pipeline ball valves, emergency shutdown (ESD) valves, safety valves, offshore control valves, and remote well-head valves, these actuators provide an essential fail-safe solution that ensures safety, prevents emissions, and eliminates product loss.
With the ability to handle torque up to 194 kNm (1,720,000 in.-lbs), the MXFS/QXFS actuators combine electric actuation with an independent spring mechanism. This design eliminates the dead time often associated with pneumatic actuators, providing faster and more accurate control, ensuring superior operational performance with lower power consumption. The use of a spring to store energy contributes to reduced energy use and zero emission loss, making the MXFS/QXFS a highly efficient solution for any critical system.
These actuators are an ideal replacement for existing pneumatic or hydraulic actuators, which are prone to leakage and wasted energy. Featuring a modular, scalable design, the MXFS/QXFS actuators simplify installation and maintenance while eliminating the need for complex inspections of tubing, fittings, or hydraulic power units (HPU) and compressors.
With the MXFS/QXFS actuators, Flowserve has created a fail-safe solution that enhances reliability, reduces maintenance efforts, and contributes to environmentally conscious operations. Perfect for critical applications where performance, safety, and energy efficiency are paramount.
Features And Benefits
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- Lower energy consumption to reduce carbon footprint and improve sustainability
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- No leakage, as the design eliminates hydraulics and pneumatics
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- No creeping due to thermal effects or leaks
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- No tubing or fittings to inspect or audit, reducing maintenance costs
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- Modular and scalable design for easy installation and reduced maintenance
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- Compact design with no need for a hydraulic power unit (HPU) or compressor
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- Standard mechanical anti-back-drive device prevents leakage and actuator damage
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- Full digitalization for predictive maintenance and real-time monitoring
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- Optional integrated high-low pressure pilot ensures emergency shutdown capability
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- No costly maintenance intervals or oil changes typically required with electro-hydraulic or gas-over-oil solutions
Common Applications
The MXFS/QXFS fail-safe actuators are ideal for a variety of critical applications where precise and reliable valve control is essential. Common uses include pipeline ball valves, ensuring secure fluid and gas transport, emergency shutdown (ESD) valves for rapid and safe system shutdowns in emergencies, and safety valves that protect against overpressure or hazardous conditions. These actuators are also widely used in offshore control valves, providing dependable operation in challenging environments like oil and gas platforms, as well as remote well-head valves, where they ensure safe and efficient control in harsh, remote locations. With their fail-safe design and energy-efficient operation, MXFS/QXFS actuators are perfect for any system requiring reliable valve actuation in demanding applications.
