SHURFLO 1700-001-030 500 GPH BAIT SENTRYSHURFLO 1700 001 030 500 GPH BAIT SENTRY PUMP This unique pump eliminates a physical connection between the motor and the impeller and turns the impeller with a magnetic drive. If the pump is dry or the impeller is clogged, the motor can run dry without damage. Patented anti airlock feature allows the pump to clear trapped air. Includes a dual port for easy washdown pump connection. Ignition protected. Magnetically driven impeller, debris will not