ShurFlo 2088 Series Delivery Pump flows up to 3.5 gpm and self primes. This pump is a fully automatic diaphragm pump, ideal for high-volume applications such as vending machines for both delivery and reservoir draining. The Pump activates automatically as line pressure drops and shuts off when a preset pressure is achieved.Features: Self Priming up to 12 vertical lift feet (3.7m) Used in delivery and transfer applications up to 3.5 gpm NSF Listed Prevents back flow of fluid through the pumps Automatic shut-off Can run dry without damage