The new Piusi DEF Rotary Hand Pump F00332A30 is the first hand pump to be specifically designed for use with DEF! It incorporates a check valve and spring-loaded vanes to always maintain prime, while also eliminating a siphon effect. This hand pump can be securely orientated in any position, and is designed to eliminate oscillation while in use. This along with a stainless steel body multiplies its longevity! Features: Self-priming 4 GPM flow rate 38 Gallons per 100 revolutions Integrated check valve for immediate dispensing Maintenance-free for 250,000 gallons Prevents DEF crystallization Eliminates the siphon effect with check valve and Spring loaded vanes Specifications: 9 ft. of dispensing hose Stainless steel spout Flexible suction pipe Drum connector 2” x 5 buttress adaptor (2" NPT sold separately. P/N: F19473000) These pumps can also be used with anti-freeze, windshield washer fluid or water, though the drums will require adapter part number F19473000 to fit a 2-1/2" drum bung.