The easy-to-load 313D pumphead is offered for blood processing applications. It accepts seven different tube sizes for a flow range of 0.25 to 3,000 ml/min, and pressures up to 30 psi. The easy tube loading feature enables the 313D to provide foolproof loading and minimal downtime. To maintain the purity of the pumping product, the pumphead has no valves, is self-priming, and can run dry without incurring damage. The pumps can be cleaned in-line at full velocity without the intrusive bypass of most other positive displacement pumps.