Pneumatic Actuated Valves

Pneumatic Ball Valves

High-performance quarter-turn ball valves (DN15–DN300) in 2-piece, 3-piece, flanged, and V-notch configurations, delivering millisecond Class VI shut-off and precise linear flow throttling.

Pneumatic Butterfly Valves

Cost-effective, high-flow quarter-turn valves (DN40–DN1200) in wafer, lug, and flanged patterns, providing ultra-fast switching for cooling loops, municipal water, HVAC, and air distribution.

Pneumatic Gate / Globe Valves

Heavy-duty linear pneumatic cylinder valves designed for high-pressure utility isolation and steam regulation, delivering straight-through full-bore flow and reliable high-differential sealing.

Pneumatic Knife Gate Valves

Rugged shearing knife gate valves powered by high-thrust pneumatic cylinders, engineered to slice cleanly through mining tailings, wood pulp, fly ash, and solid-laden wastewater without jamming.

Pneumatic Angle Seat Valves

High-cycling Y-pattern stainless steel piston valves (DN15–DN65) featuring self-aligning PTFE seat seals, built for steam, harsh liquids, and rapid switching exceeding 5 million continuous cycles.

Pneumatic Filling Valves

Precision sanitary stainless steel dispensing valves with anti-drip nozzle profiles and instant air cut-off, tailored for high-speed liquid packaging, automated bottling lines, and chemical dosing.

Pneumatic Dome Valves

Heavy-duty pressure-tight valves featuring inflatable elastomer bladder seats, specifically engineered for zero-leakage isolation in dense-phase pneumatic conveying of abrasive powders, sand, and fly ash.

Custom Pneumatic Valve Solutions?

Beyond standard models, we engineer tailored air-operated valve assemblies—including special body alloys, custom flange standards (ANSI/DIN/JIS/Tri-Clamp), mechanical spring fail-safe options, and turnkey NAMUR pilot solenoid integration for your exact plant air specifications.

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Download Full Catalog

Get instant access to comprehensive engineering data sheets, 2D/3D CAD models, air consumption and torque charts, and wiring schematics for our entire pneumatic actuated valve portfolio—including ball, butterfly, angle seat, filling, and dome valves.

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Valve Type Selection

Select the optimal valve pattern (Ball, Butterfly, Gate/Globe, Knife Gate, Angle Seat, Filling, or Dome Valve) based on your media properties, required actuation speed, and isolation vs throttling duty.

Connection Type & Bore Size

Define your pipeline diameter (DN15–DN1200 / 1/2"–48") and piping standard: Flanged (ANSI / DIN / JIS), Wafer, Lug, Tri-Clamp Sanitary, Female Thread (NPT / BSPT), or Welded ends.

Actuator Action Mode (DA vs SR)

Specify Double-Acting (DA) for balanced air-driven opening and closing, or Single-Acting Spring-Return (SR) for automatic mechanical fail-safe closure (NC) or opening (NO) upon air failure.

Available Plant Air Supply

Specify your shop air pressure (standard 4 to 7 bar / 60–100 psi). Our engineers apply a 30%–40% dynamic torque safety factor to overcome line pressure differentials and media sticking.

Body & Seat Metallurgy

Select valve body materials (WCB Cast Steel, CF8/SS304, CF8M/SS316, Ductile Iron, UPVC) and matching seats (PTFE, EPDM, Viton, Inflatable Elastomer, or Stellite Hard Metal).

Pneumatic Accessories & Pilot Integration

Configure your automation control package: direct-mount NAMUR pilot solenoid valve (24VDC/220VAC), mechanical/proximity limit switch box, air filter regulator (F.R.L.), or 4-20mA smart positioner.

Operating Temperature & Hazard Rating

Specify temperature ranges (-40°C to +450°C) and plant hazardous zone classifications (ATEX / IECEx Ex II 2GD explosion-proof certifications or high-temperature radiator extensions).

Final Review & DELCO Factory Quote

Submit your configured operating parameters to our automation engineers for rapid torque calculation, 3D CAD dimensional verification, and factory-direct pricing.

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Millisecond Fast Response & 1M+ Cycle Life

Equipped with low-friction piston seals, twin-rack guides, and hard-anodized aluminum cylinder barrels, DELCO pneumatic actuators deliver instant millisecond stroke speeds and proven durability exceeding 1,000,000 continuous cycles.

Inherent Explosion-Proof ATEX Safety

Powered purely by compressed air without electrical coils or motor spark hazards, our standard pneumatic assemblies are intrinsically safe and certified to ATEX Ex II 2GD, making them the benchmark for volatile chemical and dust zones.

Standardized NAMUR & ISO 5211 Direct Mounting

Manufactured in strict compliance with ISO 5211 valve mounting pads and NAMUR VDI/VDE 3845 accessory interfaces. This direct-mount architecture eliminates mounting bracket play and enables seamless plug-and-play accessory installation.

Reliable Mechanical Spring-Return Fail-Safe

Our Single-Acting actuators feature pre-stressed, epoxy-coated alloy spring cartridges. In the event of plant air line disruption or electrical interlock failure, mechanical spring force instantly returns the valve to its designated safe position.

100% Pressure Testing & Zero-Leakage Sealing

From bubble-tight Class VI soft seats (PTFE/EPDM) to Stellite hard-faced metal trims and inflatable dome bladders, every complete assembly undergoes 100% hydrostatic shell and pneumatic seat leak testing per API 598 / ISO 5208 before dispatch.

Fully Pre-Assembled & Bench-Tested Automation

We eliminate field assembly headaches. Every valve, pneumatic actuator, NAMUR solenoid valve, limit switch box, and electro-pneumatic positioner is completely mounted, tubed, calibrated, and cycle-tested in our factory prior to shipping.