Syringe Pump Applications
Pumps for Continuous Flow Applications 24/7
reverses direction and the second syringe
will delivery while the first syringe refills.
This pump can do this 24/7. See Harvard
Pump 33 on page A11. We also have two
special models of the Pump 33 that will hold
a total of 4 or 8 syringes, 2 or 4 on each
pumping mechanism, increasing your fluid
pumping capacity.
Previous
Next
3. RS232 Control
Additional Equipment
Table of
Contents
Product
Index
Applications:
•
HPLC and LPLC
•
Continuous calibration stream
•
Large volume solvent blending
Search
Benefits:
Home
Contact
Us
Previous
Next
•
High accuracy
•
High precision
•
High pressure
•
Pulseless flow
•
2 year warranty on all HAI syringe
pumps
Harvard Apparatus has three ways to solve
your need to have a high precision syringe
pump and continuous flow. This is important
in applications where high precision, high
accuracy and pulseless flow is necessary.
1. PHD 22/2000 Push-Pull
Programmable
It allows for continuous cycling. This Pump
is also available in a remote model where
the pumping mechanism is separated from
the control box by a 30 foot cable.
The PHD 22/2000 Push-Pull Programmable
is available in a high force model, up to 430
pounds of force, that are ideal if you are
working with viscous fluids, see page A12 to
A15 for complete pump details. We also
have a special push/pull model that will hold
up to 20 syringes, 10 in each direction.
Please call for details.
2. Syringe Pump 33
Two Pumps in One!
This amazing pump can do a variety of applications including continuous deliver and
push pull style delivery. This pump has two
independent motors. With the addition of a
valve box you can have one syringe delivering while the other syringe is refilling. When
the first syringe is empty the pump simply
In addition to the syringe pump a valve will
be necessary to to provide continous delivery. We have many valving options to pick
from. Select either passive or active valves.
Select from high or low pressure Valves. We
have ones with low dead space volume
and/or high purity fluid paths.
Catalog No.
Product
BS4 61-0270
Continous Flow Tubing
Segment for PHD 22/2000
Push/Pull Syringe Pump,
20 p.s.i.
BS4 55-1146
‘Auto Fill’ Valve, Normal
Pressure, 30 p.s.i.
BS4 55-1146
‘Auto Fill’ Valve, High
Pressure, 200 p.s.i.
BS4 55-3336
Syringe Pump 33
Continous Delivery Valve,
Normal Pressure, 30 p.s.i.
BS4 55-3337
Syringe Pump 33
Continous Delivery Valve,
High Pressure, 200 p.s.i.
Special high pressure valves are available that can tolerate up to 1,250 p.s.i., please call for additional information.
This is the simplest method to provide continuous flow for your application. The pump
has a syringe holder that will mount syringes
in apposing directions. Each pump will hold
4 syringes, two in one direction and two in
the opposite direction. When the pusher
block is moving in the forward direction, the
forward facing syringes are dispensing while
the oposite facing syringe are refilling. When
the pusher block reaches the end of travel,
the pump direction reverses so now the forward facing syringes are refilling while the
opposite syringes are dispensing.
The PHD 22/2000 Push-Pull Pump programmble model offers the greatest flexibility in control because it allows you to program exactly the sequence of steps you want.
A27
11,000 Specialty Products to Enhance Your Bioresearch
U.S. Toll Free: (800) 272-2775 • Fax: (508) 429-5732 • Online: www.harvardapparatus.com