PUMP HEADS
Each pump head has a solvent inlet port, a solvent outlet port, an inlet
port to the rinsing chamber, an outlet port from the rinsing chamber,
and a reciprocating piston.
The piston seal and the bellows are inside the pump head. The solvent
inlet port and the solvent outlet port are fitted with connectors
containing the check valves. All of these items can be serviced by the
user.
The pump heads are pre-mounted directly onto the tops of the driving
mechanisms, which have the same axis as the piston motors, so pump
heads may be changed with relative ease. The pump heads must be
dismounted for routine servicing purposes (for example, changing a
piston seal).
PPMM (333 PUMP ONLY)
The PPMM combines three functions:
● A static mixer to blend up to three solvents at high pressure.
● A built-in transducer that detects the pressure in this part of the hydraulic circuit.
● A purge valve which is used to manually direct the mobile phase towards the outlet filter or
divert to the drain.
OUTLET FILTER (333 PUMP ONLY)
The outlet filter protects the injection valve and the column.
The outlet filter can be replaced by the user.
Figure 3
H3 Pump Head
13
333/334 HPLC PUMPS | USER’S GUIDE
DESCRIPTION
To Next Page
Loading...
