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LPG Series Fixed Volume Dispense Pumps

This compact (25 mm), solenoid-driven fixed volume dispense pump is available in 100 µL and 175 µL standard models, with other dispense volumes available upon request. Featuring a compact, chemically inert, self-priming design, this pump aspirates an accurate volume of fluid when the solenoid is energized and dispenses the full volume of fluid when de-energized. Integrated check valves, together with a unique housing design and diaphragm seal, prevent siphoning when the dispense point is positioned above the fluid reservoir. Each pump is customizable and 100% tested to ensure performance.

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Key Product Facts
  • Dispense Volumes:100 & 175 µL
  • Fluidic Interface:Manifold mount or 3/32” ID soft tubing
  • Chemically Inert Materials
  • Simple Electrical Operation
  • Self-Priming Anti-Siphoning Design

Product Information

General Specifications
Characteristic Specification
Power 7 W
Max Dispensing Frequency1 5 Hz
Head Pressure Range2 ± 60 inches of water
Max Case Pressure 5 psig
Cycle Life3 10 M Cycles Min
Operating Temperature EPDM: 30°F to 120°F (-1°C to 49°C)
FKM: 45°F to 120°F (7°C to 49°C)
Max Internal Coil Temperature4 200°F (90°C)
Storage Conditions5 Temperature: -40°F to 175°F (-40°C to 80°C)
Relative Humidity: 85% Max, Non-Condensing
Filtration 35 Microns or Finer
1Maximum water dispense frequency at zero head pressure at room temperature. Operating the pumps at higher frequencies will affect dispense accuracy and life expectancy. Response times are dependent upon system conditions and will typically increase as operating temperature decreases. Extended periods of inactivity may also have an impact on the initial response time of the pump.
2The pumps will operate within the specific pressure range when supplied with the rated voltage ±5%. Variations in pressure due to head or restriction can affect dispense volume accuracy.
3Typical cycle life on water. Cycle life is dependent on system conditions and may vary by application.
4Pumps are rated for 50% maximum electrical duty cycle. To ensure solenoid coil temperatures remain within specification, further energized time or duty cycle limitations may be required. Contact The Lee Company for recommendations specific to your application.
5Pumps should be stored completely wet or completely dried with nitrogen before prolonged periods of inactivity to avoid elastomeric stiction.
Wetted Materials
Component Material
Port Head PEEK
Seal, O-rings, & Integrated Check Valves EPDM or FKM
Recommended Drive Form
The pump is intended for operation at the rated voltage, at a maximum frequency of 5 Hz.
Cross Section View
Dimensional View
Combination Manifold Mount & Soft Tube Ported Configuration
Press tubing directly onto the ports or mount the pump directly to a manifold. The locking end cap provides secondary retention and is compatible with AMP part number 104257-2 style connectors.
This image is for reference only. All dimensions are in inches [millimeters].
Mounting Details & Port Configuration
Combination manifold mount & soft tube ported configuration: press tubing directly onto the ports or mount the pump directly to a manifold.
Manifold mounting boss shown above for reference only. Reference drawing number LSIX1001490A for complete mounting boss specifications.
Use two #8 screws with recommended screw torque: 90 in-oz (0.636 N-m).
All dimensions are in inches [millimeters].

Part Numbers & Specifications

This table below contains the part numbers and technical specifications for this product. If you have specific questions, need a quote, or would like to request a handbook or drawing, click the red request button in the column on the far right.

Part Numbers & Specifications
PART NUMBER VOLTAGE
(VDC) 		DISPENSE VOLUME
(µL) 		ACCURACY1
(%) 		MAX FLOW RATE2
(μL/sec) 		POWER3
(W) 		SEAL MATERIALS Request Information
LPGA1250010D 12 100 ± 10 ±10 500 7 FKM Request
LPGA2450010D 24 100 ± 10 ±10 500 7 FKM Request
LPGA1251010D 12 100 ± 10 ±10 500 7 EPDM Request
LPGA2451010D 24 100 ± 10 ±10 500 7 EPDM Request
LPGA1250618D 12 175 ± 10 ±6 875 7 FKM Request
LPGA2450618D 24 175 ± 10 ±6 875 7 FKM Request
LPGA1251618D 12 175 ± 10 ±6 875 7 EPDM Request
LPGA2451618D 24 175 ± 10 ±6 875 7 EPDM Request
1Accuracy rated at zero head pressure on water at room temperature.
2Maximum flow rate at 5 Hz at zero head pressure on water at room temperature.
3Maximum power during aspiration. Average power while pumping will be half.

Installation & Accessories

Accessories View
Exploded view of installation onto a standard manifold adapter.
Replacement Parts & Accessories
PART NUMBER DESCRIPTION
LSWX0508680A O-ring: FKM (Black)
LSWX0508690A O-ring: EPDM (Black)
LSWX0503430A Screw, SHC #8-32 X 0.50" Stainless Steel
LSWX0504300A Electrical Lead Wire Connector, 6" (152 mm)
LSWX0606700A Electrical Lead Wire Connector, 24" (610 mm)
LSMX0519110B* PEEK Manifold Adapter for Connection to 1/4-28 Ports
*Standard manifold adapters are available to ease prototype setup. Refer to the accessories view for a 2D view. Manifold adapter part numbers are for the manifold and mounting screws only; pumps are not included and are sold separately. PMMA manifolds are not listed but are readily available. Alternate materials and customized manifold designs with pumps fully mounted and tested as an assembly are also available upon request.

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CAD Envelope

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The Lee Company has developed the Lohm Laws for defining and measuring resistance to fluid flow. The Lohm is defined such that 1 Lohm will flow 100 GPM of water with a pressure drop of 25 psi at a temperature of 80°F.

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