The 305 Positive Displacement Pump dispenses five parts resin and one part hardener (5:1) by volume. It consists of two separate parallel pump systems, one for the resin and one for the hardener. The two systems are operated simultaneously by a single lever. The pump delivers 2.3 fl oz of resin and hardener per full stroke of the dispensing lever. The reservoirs hold two gallons of resin and one gallon of hardener. For use with 105 Epoxy Resin and 205 Fast Hardener or 206 Slow Hardener.
The pump is calibrated for WEST SYSTEM 5:1 ratio epoxies and is easily identified with a blue base. (The 303 Positive Displacement Pump is calibrated for 3:1 ratio epoxies with 207 Special Clear Hardener or 209 Extra Slow Hardener and has a red base.) Pricing on positive displacement pumps are listed on the WEST SYSTEM Price List.
Positive Displacement Pumps may also be ordered with drum fittings. These connect directly to your WEST SYSTEM Resin and Hardener drums so there is no need to decant materials. This set up conveniently streamlines the metering process for high-volume users, saving both time and money.
Read more about mixing large batches of epoxy with Positive Displacement Pumps at Epoxyworks.com.