Graco Inc.

PR70  Benchtop Meter, Mix and Dispense System

Positive displacement metering in a compact, modular design

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Posi-Ratio by Positive Displacement

Graco positive displacement metering expertise in a compact, modular design to support a broad range of industries and applications. The Graco PR70 fixed and variable ratio systems accurately meter, mix and dispense medium-to-low viscosity materials for bonding, sealing, potting, gasketing, encapsulation and syringe filling.

Industry-proven accuracy, reliability and durability

  • Unmatched shot-to-shot accuracy:  Ratio accuracy to +/-1%
  • 2X increase in Mean Time Before Failure (MTBF)
  • Multiple seat styles and adjustable snuffback for high-pressure accuracy and clean, precise dispensing
  • Long pump life and no corrosion due to Chromex shafts, Severe Duty cylinders with stainless steel fittings 
PR70 Configurations

Flexibility: multiple configurations to support a variety of applications

  • Ratio range from 1:1 to 24:1 with variable drive
  • Shot size ranges from 2 to 70 cc’s
  • Multiple feed systems: polyethylene, stainless steel or off-board tanks with multiple tube sizes
  • Reliable servo motor control option

Easy to use and less downtime

Standard features include: electric controls, digital shot entry, gel timer, purge, and preventative maintenance counters.

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PR70 secondary

Advanced Options Customize Dispensing Systems

  • Ratio assurance packages
  • Recirculation option
  • Integrated on-board heater control
  • Input/output options
  • Auto refill package
  • Supply systems options

PR70 and PR70v
Metering Pump Effective Area
0.124 to 1.49 sq in per side
80 to 960 sq mm per side
Small Air Cylinder Effective Area
7.07 sq in
4560 sq mm
Large Air Cylinder Effective Area
15.9 sq in
10260 sq mm
Maximum Stroke Length
1.50 in
38.1 mm
Minimum Stroke Length
0.23 in
5.8 mm
Volume per Cycle
0.12 to 4.3 cu in
2 to 70 cc
Pump Cycles
14.3 to 500 cycles per 0.26 gal
14.3 to 500 cycles per 1 l
Ratios (fixed)
1:1 to 12:1 (depending upon cylinders selected)
1:1 to 12:1 (depending upon cylinders selected)
Maximum Fluid Working Pressure
3000 psi
20.7 MPa /207 bar
Maximum Air Input Pressure
100 psi
0.7 MPa/7 bar
Maximum Operating Temperature
160°F, nylon pistons 120°F UHMWPE pistons or PE Tanks
70°C, nylon pistons 50°C UHMWPE pistons or PE Tanks
Air Inlet Size
1/4 NPT female
1/4 NPT female
Pump Fluid Outlet Size
-03, -04, -06, -08 or –12 JIC fittings for 3/16 in,1/4 in, 3/8 in, 1/2 in, 3/4 in hoses
-03, -04, -06, -08 or –12 JIC fittings for 4.8 mm, 6.4 mm, 9.5 mm, 12.7 mm, 19.1 mm hoses
Wetted Parts
303/304, 17-4 PH, hard chrome, Chromex™, carbide,Chemical Resistant O-rings, PTFE, nylon, UHMWPE
303/304, 17-4 PH, hard chrome, Chromex™, carbide,Chemical Resistant O-rings, PTFE, nylon, UHMWPE
Weight
120 lb typical with two 7.5 L tanks, 330 lb typical with two 60 L tanks
55 kg typical with two 7.5 L tanks, 150 kg typical with two 60 L tanks
Sound Pressure Level (at typical operator station for machine mounted Dispense Valve)
82 dBA
82 dBA
Compressed Air
Less than 10 scfm typical (varies with cycle times)
Less than 10 scfm typical (varies with cycle times)
Electrical Power
100-240V 50/60Hz, 1 phase for machine – 80 Watts, 208-240V 50/60Hz, 1 phase for heat – 11 kW max, 120 or 240 VAC 50/60Hz, 1 phase for on-board-agitators, 80 Watts, 240 VAC 50/60Hz, 1 phase for off-board-agitators, 600 Watts
100-240V 50/60Hz, 1 phase for machine – 80 Watts, 208-240V 50/60Hz, 1 phase for heat – 11 kW max, 120 or 240 VAC 50/60Hz, 1 phase for on-board-agitators, 80 Watts, 240 VAC 50/60Hz, 1 phase for off-board-agitators, 600 Watts