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Pneumatic Ball Valve Pneumatic Butterfly Valve Pneumatic Gate/Globe Valve Pneumatic Knife Gate Valve Pneumatic Angle Seat Valve Pneumatic Filling Valve Pneumatic Dome Valve
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Manual Ball Valve Manual Butterfly Valve Manual Gate Valve Manual Globe Valve Knife Gate Valve
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What Are Valve Actuators?

Valve actuators are the critical components that automate valve operation, enabling precise control of fluid flow. Delco specializes in two major categories: Electric and Pneumatic actuators. Unlike manual handles or gearboxes, these devices provide the power and intelligence to open, close, or modulate valves remotely, making them essential for modern process automation. Engineered for durability and efficiency, Delco actuators optimize automation in oil, gas, water, and manufacturing systems—trusted for seamless performance.

Delco offers a complete portfolio of valve actuators, covering both major power sources to meet diverse operational needs:

Quarter-Turn Electric Actuator

Quarter-Turn Electric Actuator

Quarter-Turn Electric Actuator

Multi-Turn Electric Actuator

IP67 Explosion Proof Electric Actuator

IP68 Water-Proof Electric Actuator

AT Scotch Yoke Pneumatic Actuator

AW Rack-and-Pinion Pneumatic Actuator
Compact and efficient design, providing precise 90-degree control for ball, butterfly, and plug valves. Precise multi-rotation control, perfect for gate and globe valves requiring linear motion. Certified safety design, ensuring reliable operation in hazardous and explosive environments. Fully submersible construction, designed for reliable performance in underwater or flood-prone applications. High-torque output design, providing robust control for large heavy-duty industrial valves. Compact and durable mechanism, offering fast and reliable actuation for quarter-turn valves.

Key Features & Advantages

When selecting actuators, Delco provides:

Versatile Mechanisms
Quarter-turn, multi-turn, and linear designs available in both electric and pneumatic configurations to match any valve requirement.
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Precision Control
Options for On/Off, Modulating (4-20mA), and Intelligent control with feedback for seamless integration into automation systems (SCADA/DCS).
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Global Standards
ISO 5211 mounting interfaces and international certifications (CE, ATEX) ensure compatibility and safety across global markets.
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Robust Reliability
IP67/IP68 ingress protection and explosion-proof enclosures guarantee performance in harsh, hazardous, or submerged environments.

Engineering Selection by Application

Match valve design and actuator type with your industry needs.

View Our Solutions point
Comparison Factor Electric Actuators (Motor Driven) Pneumatic Actuators (Air Driven)
Power Source Electricity (24VDC, 110/220/380VAC) Compressed Air (3-8 Bar / 40-120 PSI)
Motion Speed Slower & Controlled (10s - 100s)
Adjustable speed prevents water hammer		 Fast & Instant (< 1s possible)
Ideal for quick action & emergency shutdown (ESD)
Control Precision High Precision (±0.5%)
Perfect for 4-20mA flow modulation		 Moderate
Requires additional Smart Positioner for modulation
Fail-Safe Mode Complex
Requires Battery Backup or Capacitor (higher cost)		 Simple & Reliable
Spring Return automatically closes valve if air fails
Duty Cycle Limited (typically 30% - 75%)
Motor requires cooling periods (unless expensive continuous models used)		 High / Continuous (100%)
Can cycle frequently without overheating constraints
Maintenance Moderate
Contains gears & electronics; complex to repair if failed		 Low
Simple mechanical design ("Fit & Forget"); ultra-long cycle life
Best Application Precision control loops, remote sites without air supply, HVAC Hazardous zones (Explosion-proof by design), high-frequency cycling

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  • icon_cta_check Quick valve sizing recommendations
  • icon_cta_check ISO, CE, ATEX certified production
  • icon_cta_check Datasheets and 3D drawings available
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  • icon_cta_check Material & sealing customization (PTFE, EPDM, metal)
  • icon_cta_check Explosion-proof & modulating actuator options