Electric Fixed Ratio (EFR) Metering System
Electric Fixed Ratio (EFR) Metering System
The Graco Electric Fixed Ratio (EFR) is an electrically driven proportioner for two-component sealant and adhesives. The EFR provides advanced material control in applications requiring consistent shots and beads.
Accurate. Versatile. Easy.
- Highly accurate, even with low flow rates
- Capable of shots, beads and continuous flow dispense
- Superior repeatability
- Capable of handling a wide range of materials
- Easy to configure, operate and maintain
Accurate dispensing is key for quality end products. With the EFR you can be assured to reach accuracy during every dispense.
Consistent Ratio
The ratio is controlled by our mechanically linked volumetric Z-pumps. These pumps dispense 50% of their nominal volume in each stroke. This allows for accurate ratio control in small shots and in continuous flow.
Start & Stop
The electric motor directly controls the movement in the pumps so that the requested flow rate is achieved directly from the start. With the additional automatic calibration cycle, snake heads at the start and tails at the end are eliminated.
Shot Repeatability
With the built-in encoder, material flow is continuously controlled to assure a consistent flow rate, even during pump changeovers.
During Pump Changeovers
In combination with Graco’s control architecture, the advanced drive unit can recognize when the pump is close to changeover and is able to accelerate and decelerate to eliminate pulsation in the dispense.
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