High-Pressure Injection Pump

Eldex Optos Series incorporates knowledge gained from over 40 years of experience in designing and manufacturing reciprocating piston pumps for a wide variety of applications while integrating the latest technology and electronics.

There are two types for your choice, Regular-type and Plus-type. Plus-type is fitted with a pulse damper that can set the high-pressure limit and the low-pressure limit.

Eldex Optos can apply in:

  • HPLC
  • Reactant/chemical feed
  • Column washing
  • Pilot plant
  • Post column reaction
  • Flow injection analysis
high pressure injection pump
Eldex Optos Plus Pump

High-Pressure Injection Pump Advantages

1. Precise Metering

A high-pressure Liquid Metering Pump can use for precise flow rate control, particularly at high pressures.

2. Wide Flow Ranges

Three pump models to meet your specific requirements.

3. Reciprocating Piston Design

All metering pumps are based on a positive displacement, reciprocating piston design, which gives you precise flow control.  Various models cover flow rates from 0.002 to 80 mL/min.

4. Versatile, Easy to Use

The pump provides a simple interface for ease of control over flow rates, refill rates, compressibility compensation, and other pump parameters.

5. Convenient Control Options

The pump can be controlled from either the local LCD display and membrane keypad, or remotely, using either RS232 commands or analog controls (either 0-5VDC or 4-20mA).

6. Corrosion Resistance

The materials in the liquid end of pumps are carefully chosen for corrosion resistance.  The piston is sapphire, and the inlet and outlet valves incorporate sapphire seats and ruby balls.

7. Non-Metallic

Metering pumps can be made with PEEK liquid end assemblies, as opposed to the usual type 316 stainless steel, eliminating all metal contact in the flow path.

8. Piston Wash

The use of buffers or solutions which crystallize when exposed to air can lead to abrasion of the piston seal. A fully integrated piston wash system is included in the pumps, dramatically extending piston seal life.

9. Simple, Robust Construction

The pump, only four inches wide, occupies very little bench space.  The design is simplified for optimal reliability.  With our extensive experience in reciprocating pump technology, no effort has been spared to make the most durable pump available.

10. After-sale Services

GALAK provides after-sale services, like training, repairing, part replacement.

Eldex Injection Pump

Model 1

316 stainless steel Flow Rate Max. Pressure Piston Diameter Piston Stroke Model
0.002 - 2.5 mL/min 6000 psi 3/32 in. .125 in. 1LM
0.003 - 5 mL/min 6000 psi 1/8 in. .125 in. 1SM
0.01 - 20 mL/min 3000 psi 1/4 in. .125 in. 1HM
PEEK Flow Rate  Max. Pressure Piston Diameter Piston Stroke Model
0.002 - 2.5 mL/min 4000 psi 3/32 in. .125 in. 1LI
0.003 - 5 mL/min 4000 psi 1/8 in. .125 in. 1SI
0.01 - 20 mL/min 3000 psi 1/4 in. .125 in. 1HI

Model 2

316 stainless steel Flow Rate  Max. Pressure Piston Diameter Piston Stroke Model
0.003 - 5 mL/min 6000 psi 3/32 in. .250 in. 2LM
0.01 - 10 mL/min 6000 psi 1/8 in. .250 in. 2SM
0.02 - 40 mL/min 1500 psi 1/4 in. .250 in. 2HM
PEEK Flow Rate  Max. Pressure Piston Diameter Piston Stroke Model
0.003 - 5 mL/min 4000 psi 3/32 in. .250 in. 2LI
0.01 - 10 mL/min 4000 psi 1/8 in. .250 in. 2SI
0.02 - 40 mL/min 1500 psi 1/4 in. .250 in. 2HI

Model 3

316 stainless steel Flow Rate Max. Pressure (psi) Piston Diameter Piston Stroke Model
0.01 - 10 mL/min 3000 psi 3/32 in. .500 in. 3LM
0.01 - 20 mL/min 1500 psi 1/8 in. .500 in. 3SM
0.04 - 80 mL/min 750 psi 1/4 in. .500 in. 3HM
PEEK Flow Rate Max. Pressure Piston Diameter Piston Stroke Model
0.01 - 10 mL/min 3000 psi 3/32 in. .500 in. 3LI
0.01 - 20 mL/min 1500 psi 1/8 in. .500 in. 3SI
0.04 - 80 mL/min 750 psi 1/4 in. .500 in. 3HI

Plus: Minimize Pulsation, Monitor Pressure

Add Plus to your Optos Series pump to integrate a pulse damper to further reduce pulsation, and have the ability to monitor pressure and set high and low pressure limits. Plus is available on L and S piston pumps.

Model 1 plus

316 stainless steel Flow Rate* (mL/min) Max. Pressure (psi) Piston Diameter (in.) Piston Stroke (in.) Model
0.002 - 2.5 6000 3/32 .125 1LMP
0.003 - 5 6000 1/8 .125 1SMP
PEEK Flow Rate* (mL/min) Max. Pressure (psi) Piston Diameter (in.) Piston Stroke (in.) Model
0.002 - 2.5 4000 3/32 .125 1LIP
0.003 - 5 4000 1/8 .125 1SIP

Model 2 plus

316 stainless steel Flow Rate* (mL/min) Max. Pressure (psi) Piston Diameter (in.) Piston Stroke (in.) Model
0.003 - 5 6000 3/32 .250 2LMP
0.01 - 10 6000 1/8 .250 2SMP
PEEK Flow Rate* (mL/min) Max. Pressure (psi) Piston Diameter (in.) Piston Stroke (in.) Model
0.003 - 5 4000 3/32 .250 2LIP
0.01 - 10 4000 1/8 .250 2SIP

*Maximum flow rate specifications are based on theoretical volume displacement; actual flow rates will vary depending on such factors as fluid viscosity, compressibility and temperature.

Replacement Parts

Stainless Steel Valves
P/N Description
1369 Inlet valve assembly, cartridge style.
1372 Outlet valve assembly, cartridge style.
1373 Inlet valve assembly, cartridge style, for use with 1/8" compression fittings.
1374 Outlet valve assembly, cartridge style, for use with 1/8" compression fittings.
1371 Inlet valve assembly, cartridge style, "high-pressure."
1370 Outlet valve assembly, cartridge style, "low-pressure."
1381 Valve cartridge.
CTFE Valves
P/N Description
1375 CTFE inlet valve assembly, cartridge style.
1376 CTFE outlet valve assembly, cartridge style.
1382 CTFE valve cartridge.
PEEK Valves
P/N Description
1377 PEEK inlet valve assembly, cartridge style.
1378 PEEK outlet valve assembly, cartridge style; conical bottom
1380 PEEK outlet valve assembly, cartridge style; flat bottom
1383 PEEK valve cartridge.
10K psi Valves
P/N Description
1421 Inlet valve assembly, cartridge style, for use in 10K psi pumps
1422 Outlet valve assembly, cartridge style, for use in 10K psi pumps
1424 Valve cartridge, 10K
Hastelloy C Valves
P/N Description
6045 Inlet valve assembly, cartridge style, 1/8” compression fitting.
6046 Outlet valve assembly, cartridge style, 1/8” compression fitting.
6047 Valve cartridge

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