This product is a positive displacement pump where a piston reciprocates within the pump cylinder. The piston pump is available in various configurations and materials to meet different requirements for precision, accuracy, linear translation speeds, and chemical compatibility. It is designed to handle viscous media and media containing particles. With an estimated lifetime of 3 million cycles (using deionized water), this pump significantly reduces maintenance costs.

The 6 mL large-volume piston pump is mainly optimized for OEM instruments or equipment requiring precise fluid handling. Equipped with a 2-way solenoid valve, it supports auto-pipetting, sample dilution and dispensing, reagent metering, and mixing for use in analytical instruments. Feel free to contact us to discuss custom solutions tailored to your needs.

Key Features

Rated stroke: 19.2 mm (3820 full steps)
High accuracy: ≤0.5% (Rated Stoke, 19.2 mm)
Large fixed volume: 6 mL
Resolution: 0.005 mm/step (1.57 µL/step)
Stepper motor: 1.8 deg/step
Lead screw: 1.0 mm thread
Pump speed: ≤8.3 mm/second
Maximum pressure: ≤0.80 MPa (116 PSI)
Fluidic connector: 1/4" -28 UNF thread
Wetted materials:

Piston material: Ceramic or PTFE
Pump head housing: transparent Polycarbonate (PC)
O-Ring: EPDM, FKM, Viton

Home position sensor is available
Optical encoder is optional
Maintenance-free (3 million cycles life time, DI water)
Excellent precision and accuracy for sample dispensing

Typical Applications

Spectrum analysis and spectrometers
Analytical chemistry instruments
Pharmaceutical production and dosing systems
Dialysis instruments or medical infusion pumps in medical application

Pump Head Housing Material	PC
Piston Material	Zirconia ceramic or PEEK, PTFE
O-Ring Material	VITON, FKM, EPDM
Accuracy	≤0.5% (Rated )
Precision	≤0.1% (Rated Stroke) & ≤0.5% (≥10% of full stroke)
Rated Stroke	19.2 mm (3820 full steps)
Resolution	0.005 mm (1.57 µL)
Expected Life	≥3.0million cycles with DI water
Initial Position Detection	Output low TTL at initial position
Initial Position Detection	Output high TTL at other position
Pump Pressure	≤0.80 MPa (116 PSI)
Port Configuration	1/4''-28,
Dimension (L x W x H)	50 x 50 x 160 mm
Humidity	20% - 80% (RH)
Temperature	5 - 55 °C
Weight	0.50 Kg
Step Motor Parameters	Step angle: 1.8°
	Phase: 2
	Phase voltage: 2.4 V
	Phase current: 1.2 A
	Resistance: 2.0 ohms ±10%
	Inductance: 4.2 mH ± 20%