Graco PD44 Positive Displacement High Viscosity Dispensing System

About the Graco PD44 Configurable Precision Meter Mix Dispensing System

Graco's PD44 Dispensing System is specifically engineered for high-precision small-shot dispensing, capable of metering, mixing, and dispensing at ratios from 1:1 to 25:1 with shots as small as 0.005 cc to 5 cc. This system excels at handling low-to-high viscosity materials, including epoxies, urethanes, silicones, and other reactive resins, while eliminating ratio drift or phasing due to hose expansion. Its innovative rod displacement metering technology ensures repeatable shot accuracy, making it perfect for automated, semi-automated, and manual dispensing applications.

Graco PD44 Configurable Options

Two controller options are available for the Graco PD44, each designed for precise and controlled dispensing:

• Pneumatic Controller: Ideal for manual and programmable shot size control.
• Electric Controller: Designed for programmable flow and shot size control.

The PD44 supports multiple feed options to accommodate different material viscosities:

• Cartridge Feed Systems: Pressurized cartridge retainers efficiently transfer low to medium-viscosity materials.
• Transfer Pumps and Rams: Suitable for low to high-viscosity materials, utilizing pail and drum rams, transfer pumps, and feed hoses for direct transfer.
• Reservoir Tanks: Various sizes allow for steady material flow of low to medium-viscosity adhesive and sealants.
• Complete System Package: A fully integrated solution that includes a pneumatic controller, manual micrometer shot adjuster, and dual one-gallon transfer pump feed package for seamless operation.

Features and Benefits of Graco PD44 Systems

• Ultra-Precise Micro-Dispensing: Shot sizes range from 0.005 cc to 5 cc for small, intricate applications.
• Rod Displacement Metering: Eliminates ratio drift and enhances shot repeatability.
• Balanced Spool Valve Design: Prevents material cross-contamination and ensures accuracy.
• Direct Feed to Mixer: No hoses between metering rods and mixer, eliminating phasing issues.
• Programmable Shot Control: Set precise, repeatable shot sizes and flow rates for automation.
• Multiple Mixing Options: Compatible with static, dynamic, and impingement mixers.
• Disposable Mixer & Needle Compatibility: Adapts to various applications with Posimixers and Luer Lock needles.
• Compact, Table-Top System: Small footprint ideal for lab, prototyping, and precision production environments.
• Easy Maintenance: Uses standard Graco components, reducing repair costs and downtime.

Specifications

• Model: PD44 Metering System
• Metering Rods: A wide selection of standard size metering rods are available depending on the ratio and shot sizes desired
• Ratio Range: 1:1 to 25:1 by volume depending on the size of the metering rods selected
• Shot Size Capability: 0.005 cc's to 5.0 cc's depending on the size of the metering rods selected
• Cycle Rate: Up to 60 cycles per minute with pneumatic drive
• Supplied Air Requirements: 1 to 3 cfm at 80 to 100 psi
• Maximum Ambient Temperature: 110°F (43°C)
• Maximum Operating Temp: 150°F (65°C)
• Maximum Outlet Fluid Working Pressure: 2000 psi (14 MPa, 138 bar)
• Maximum Air Working Pressure: 100 psi (0.7 MPa, 7 bar)
• Maximum Material Inlet Pressure:
  • Metal Sleeves: 1200 psi (8 MPa, 83 bar)
  • Plastic Sleeves: 400 psi (2.8 MPa, 28 bar)
• Wetted Parts: Hardened steel, 303/304, 404, UHMWPE, Tungsten, carbide, fluorelastomer, EPDM, PTFE
• Weight: Valve is 8 lbs. Feed systems range 4 - 175 lb.