West System
WEST SYSTEM #305 Positive Displacement 5:1 Ratio Pump (305)
WEST SYSTEM #305 Positive Displacement 5:1 Ratio Pump (305)
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Product Description
WEST SYSTEM #305 Positive Displacement 5:1 ratio Pump (305)
Model # 128850
Also available in a 3:1 Metering Pump Ratio
This pump delivers 2.0 fl oz of resin and hardener per full stroke of the dispensing lever. For use with 105 Epoxy Resin® and 205 Fast Hardener® or 206 Slow Hardener®. The 305 High-Capacity Pump is robust and dispenses epoxy faster than any pump we’ve ever offered. It works by trapping a fixed amount of resin and hardener and then forcing (displacing) that trapped volume into the discharge pipe or system. This offers improved epoxy pumping performance because changes in viscosity due to temperature change are no longer an issue. The reservoirs hold two gallons of resin and one gallon of hardener. It is designed to accurately dispense WEST SYSTEM resins and hardeners at a 5:1 by volume.
DESIGNED FOR
SPECIFICS
Dispenses five parts resin and one part hardener (5:1) by volume.
- Two separate parallel pump systems, one for the resin and one for the hardener
- Single lever pump-system
- Pump delivers 2.0 fl oz of resin and hardener per full stroke
- Calibrated for WEST SYSTEM® 5:1 ratio epoxies (205 Fast Hardener or 206 Slow Hardener)
- Easily identified with a blue base
PRODUCT USES
Streamlines the metering process for high-volume users
- 105 Resin and 205 or 206 Hardeners
- Quickly dispenses proper ratio for large batch processes
INCLUDES
- (1) 5:1 Ratio Metering Pump
All other WEST SYSTEM products are sold separately.
For the suitability of fillers for specific applications, see the Filler Selection Chart.
For more about the complete line of WEST SYSTEM products, see the Product Selection Guide.
Additional Info:
Mixing with Drill Motor Mixers
A variety of motor-driven mixers can be used to thoroughly mix epoxy. They are essentially paint mixers or variation of paint mixers chucked into a variable speed drill. When mixing with a motorized mixer, we recommend the following three-step approach:
- Mix for 30 seconds with a drill motor mixer.
- Stir by hand with the measuring stick, thoroughly scraping the corners and sides.
- Mix for 15 to 30 seconds more to blend completely.
Quality Control
Before mixing that big batch, consider quality control. Resin and hardener must be thoroughly mixed. We all know this, but tend to forget during big projects when we’re pressed for time. This is not the place to look for short-cuts. If you don’t follow certain guidelines, a fancy electric mixer will not make up for it.
WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.
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