Pumps Preparative

Valveless pump, E 200

The piston is flattened in front on approximately 65% of the diameter.In the draw phase (1) the pressure side is blocked, lighting becomes through the axial movement as the piston performs a rotating and axial turn at the same time. The Piston reaches a so-called 0-position in the rear position (2), that means the entry- and exit page is locked. In the forward motion (3) the pressure side will be released and the lighting side be locked. Afterwards again a 0-position results, thereby the piston is in front position (4). Afterwards the procedure repeats. Due to close tolerance between piston and piston jack suspensions, solvents can be delivered without problems (50-500cP). Apart from the revolution the piston stroke can be adjusted manually