The Parker 61AC-2 is a pneumatic valve actuator engineered for quarter-turn industrial valve control. It employs dual opposed pistons within an aluminum alloy body coated with two-component polyurethane, delivering balanced force through a rack and pinion mechanism. The actuator provides rapid response with fully concentric operating load capability, supported by a three-point suspension system using carbon-filled PTFE guide bands. A patented balanced piston design ensures even bearing load distribution and eliminates piston tilting.
Technical Specifications
• Actuator Type: Pneumatic, rack and pinion
• Operation: Normally Closed Spring Return (AC), Double Acting (AD), or Normally Open Spring Return (AO); 180° variants available (ACX, ADX)
• Angle of Rotation: 90° standard; 180° models available
• Operating Pressure: 40–120 PSIG (2.8–8.3 bar) for 90° models; 80 PSIG (5.5 bar) maximum for 180° models
• Torque Rating: 41 Lb-Inch
• Stroke Length: 0.5 inches
• Bore Size: 1.8 inches
• Temperature Range: -4°F to 175°F (-20°C to 79°C); optional extended ranges available
• Body Material: Aluminum alloy with two-component polyurethane coating
• Piston Design: Dual opposed with balanced load distribution
• Medium Compatibility: Dry or lubricated air, non-corrosive gas, or light hydraulic oil
– Key Features
• Manual override included
• Integral air manifold with internal porting for direct solenoid valve mounting
• Center mount configuration
• Single mount: 4.65 in. L × 3.38 in. H; dual mount: 4.65 in. L × 2.36 in. H
• Low temperature seal variant (-LT) available
– Compatibility & Integration
The 61AC-2 integrates with Parker B Series Ball Valves and accepts optional solenoid valves, rotary limit switches with valve position indicators, and breather blocks. Dual mount configurations supported.
