Overflow protection
All of our portable asphalt storage tanks offer protection against accidental overflow. A proximity switch mounted atop the tank can be wired to automatically shut off the unloading pump. The switch is activated by a short pipe attached to a float. It will automatically shut off power to the unloading pump when the asphalt lifts the float to a predetermined level. An optional gauge board or radar level sensor can be used as the primary shutoff control so that the proximity switch becomes a backup.

High-level proximity switch cuts off fill pump to prevent overflow.		Float inside the tank for high-level proximity switch.