D Series Syringe Pumps
Appendix B Continuous Flow Introduction, Installation, and Operation for 30D
B-4
B.3 Continuous Flow
Electric Valves
Electric valves, which provide the best positive valve closure, are
most commonly used in liquefied gas applications. Electric valves
require the pump controller to be equipped with the valve driver
board.
Electric Valve Package
Number
Note
Electrical valves can only be used with pumps A and B.
B.3.1 Technical
Specifications
Dual system maximum flow rates under optimal conditions are
approximately 65% of the max flow rate for each pump model.
E30D 62-1247-113
Table B-2 Continuous Flow Technical Specifica-
tions-Electric Valves:
Pressure fluctuation at
switch over
3.44 bar, at system back pressures from 6.9
bar to the single pump maximum. Higher
fluctuation occurs at pressures below 6.9
bar.
Minimum 3.5 bar
Maximum system back
pressure
The single pump maximum. Valves rated to
2068 bar
Maximum flow rate (ml/min)
Liquids: 65% of the single
pump maximum rate
(excluding E1000 systems).
E30D 14.3
Liquefied gases 45% of the single pump maximum rate. Cyl-
inder cooling jackets should be used to
obtain this rate.
Temperature range 5 to 40° C
Wetted materials in valve package:
Tubing and fittings SS316, gold
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