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Short-stroke piston pump

The usual type of HPLC pump is the so-called short-stroke piston pump. Its general design, although simplified, is shown in Figure 3.1. The mobile phase is diiven by a... [Pg.59]

Figure 3.1 Principle of a short-stroke piston pump. Figure 3.1 Principle of a short-stroke piston pump.
In a special type of short-stroke piston pump the piston does not convey the mobile phase directly. The piston moves within an oil-filled channel, and oil and eluent are separated from each other by an elastic steel membrane. By this design the piston is not in contact with the mobile phase which may be aggressive on the other hand, the eluent cannot be contaminated by abrasives from the piston seal. [Pg.63]

There are two types of oil-hydraulic pumps, viz. constant delivery and variable delivery pumps. The output of the latter is controlled by varying the stroke of the piston. The piston stroke chosen is very short as compared with water pumps, thus rendering possible a considerable increase in motor speed and to couple the pumps directly with the motor (see Fig. 165). This type also permits of using an essentially larger number... [Pg.208]

See other pages where Short-stroke piston pump is mentioned: [Pg.59]    [Pg.52]    [Pg.53]    [Pg.59]    [Pg.52]    [Pg.53]    [Pg.401]    [Pg.401]    [Pg.77]    [Pg.26]    [Pg.438]    [Pg.353]    [Pg.2492]    [Pg.2247]    [Pg.109]    [Pg.291]    [Pg.15]    [Pg.2496]    [Pg.25]    [Pg.785]   
See also in sourсe #XX -- [ Pg.60 ]



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