The new Piusi DEF Rotary Hand pump 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! Hand pump only – drum not included.