The GRACO 24G621 Agitator Speed Controller is an accessory designed to regulate the speed of pneumatic agitators, ensuring consistent output speed as drum levels change. It is constructed for industrial use, primarily to prevent over-agitation of shear-sensitive and waterborne materials, reduce air consumption, and extend motor life. The material is not specified, but it is engineered for robust industrial environments.

Key Features:

• Automatic speed controller for air drive agitators
• 24G621
• Industrial-grade, robust design
• Maximum air supply pressure: 0.7 MPa/7 bar/100 psi; Minimum air supply pressure: 0.5 MPa/4.9 bar/70 psi
• Compatible with GRACO in-drum back-geared, heavy duty back-geared, expanding blade agitators, Twistork, and most competitive agitators powered by GAST Model 2AM and 4AM air motors
• Quick install (less than 1 minute setup)
• Prevents over-agitation for shear-sensitive and waterborne materials
• Saves energy by limiting agitator over-speeding
• Prevents motor over-speeding, extending lifetime
• Speed control range: 100–1000 rpm
• Maximum speed: 1000 rpm
• Maximum air temperature: 55°C (130°F)
• Main air inlet size: 1/8 NPT quick-disconnect fitting
• Diameter: 102 mm (4 in)
• Height (installed): 114 mm (4.5 in)
• Weight: 0.64 kg (1.4 lbs)

Applications:
Used in industrial mixing and agitation processes, particularly for shear-sensitive and waterborne materials, to maintain consistent agitation speed and protect equipment from over-speeding and excessive wear.

Installation Notes:

• Using genuine GRACO parts ensures compatibility, reliability, and optimal performance of the agitator system.
• Installation is quick and typically takes less than one minute.
• Ensure the compression nut and flange connector are securely tightened to the motor shaft to prevent motor run-away at startup.
• Regularly lubricate the needle and o-ring with multi-purpose lithium-based grease for smooth operation.
• Replace worn components (needle, u-cup, o-ring, bearing) using the recommended repair kit (24J886) if speed control issues arise.
• Follow the manufacturer’s installation and maintenance guidelines.
• Check for secure fittings and proper lubrication during routine maintenance.
• Monitor for consistent speed and address fluctuations promptly by replacing worn parts.