Variable-Speed Peristaltic Minipumps• Self-priming to 20 ft. 120VACQuick-release head facilitates simple tube changes. Wall-mountable polycarbonate housing. Santoprene peristaltic tubing is FDA-approved and requires no adjustment or lubrication. Turndown ratio: 100:1. Max. pressure: 25 psi. Max. viscosity: 100cP. Replacement tube kits include 2 Santoprene tubes and 4 ferrules.Pumps are UL and C-UL Listed.