Any CD dispenser can be employed to inject abrasive-free gel viscosity epoxies.

Unlike the injection of low viscosity resins that normally use a single line to transfer the resin from the mixer to the port, gel injection requires the use of twin lines. This is because the heavier viscosity components flow much more slowly than thin resins, increasing the risk of their setting up in-line.

The twin lines merge into a manifold and steel mixer usually located at the port connection. The mixer is usually of a larger diameter than that used with thin materials in order to reduce the pressure loss.

Gel Conversion Kit

These components comprise the Gel Conversion Kit. It includes a 1/2” diameter 24 element stainless steel mixer and two 3/8” twin dispense lines twelve feet long. Cleanup is limited to the manifold and mixer. The Gusto Purge Tank procedure is used.

Pressurized vessels are adequate to transfer thin resins into a CD dispenser. However gel viscosity products usually require transfer pressures of 600 psi and often higher in cool temperatures. Pumps are required. There are many drum and pail pumps that can be used. Lily Corporation is a distributor of Aro Ingersoll Rand and Graco for examples. Another option is the Lily TA-25 twin pump assembly.

TA-25 Hopper Assembly

The compact TA25 features two 7-gallon hoppers poised over twin piston pumps that deliver 1,100 psi. The hoppers, gratings, weather tight lids, and frame are stainless steel. The unit is 24” x 12” in length and width, and weighs 80 pounds. The TA25 is suitable only for viscous resins.