Wilden’s Original Series Plastic Air-Operated Double Diaphragm (AODD) Pumps feature the performance proficiencies necessary for use in the plating and metal-finishing industries. Applications in which the pumps have been shown to excel include the replenishment of plating chemical for daily use and the making of new bathes of plating material, among several others. The pumps are constructed of chemically compatible materials, such as polypropylene, PVDF and PFA. Elastomers are available in Buna-N, Neoprene, EPDM, Viton, Wil-Flex, Saniflex, polyurethane and PTFE. These pumps can pass solids as large as 6.4 mm, are portable and submersible, are available with multiple liquid connections and feature anti-freezing technology.