Does 6 L/min refer to gas flow or waste-liquid discharge flow?

6 L/min is the no-load, free-air flow per DPGL800 pump head. It is not a waste-liquid discharge rate, nor does it mean the same gas flow is available at the target vacuum level. Actual aspiration capacity for air-containing waste liquid depends on the gas-liquid condition, inlet conditions, line resistance, and outlet load, and must be verified in the actual fluid circuit.

Does an ultimate vacuum below −90 kPa mean every system can reach it?

No. Below −90 kPa is the pump's ultimate negative-pressure specification, not a guarantee of the vacuum achievable in every system. Leaks, continuous gas ingress, line resistance, gas-liquid conditions, and outlet conditions affect the result. Verify the achievable vacuum at the equipment's measurement point under actual operating conditions.

How can I determine whether the DPGL800 will evacuate a system within the required time?

First define the effective system volume, initial pressure, target vacuum level, and allowable evacuation time. Then assess the gas flow–pressure and vessel pressure build-up time curves, accounting for line resistance, leaks, and gas-liquid conditions. Dividing system volume by 6 L/min does not give the actual evacuation time; confirm performance by testing the complete system.

Foreach DPGL800 brushless miniature diaphragm vacuum pump with 6 L/min no-load gas flow per head for vacuum generation in instruments

24V Brushless Gas-Liquid Diaphragm Pump for OEM Waste Aspiration

Q: Can the DPGL800 be used as a miniature vacuum pump?

Yes. In evacuation and vacuum aspiration applications, the DPGL800 can serve as a miniature diaphragm vacuum pump for gas aspiration, tubing evacuation, and vacuum generation. Select it according to the target vacuum level, system volume, and allowable evacuation time, and confirm compatibility between the actual medium and wetted materials.

Q: Can the DPGL800 aspirate waste liquid containing air, and how does this differ from liquid-only transfer?

Yes. Its specified media are gases and gas-liquid mixtures, making it suitable for aspiration where air and liquid enter together or intermittently. Continuous transfer of 100% liquid is outside its intended operating conditions; select a miniature liquid diaphragm pump for that duty. The waste liquid's chemical composition, concentration, and temperature must also be compatible with the wetted materials.

Q: What operating information is needed to select a pump for waste aspiration or vacuum applications?

Provide the medium's composition, concentration, temperature, and gas-liquid condition, such as continuous air entrainment or intermittent liquid slugs; effective system volume, initial pressure, target vacuum, and allowable evacuation time; waste-liquid volume per cycle and cycle timing; tubing internal diameter, length, elevation difference, and outlet conditions; continuous operating time, supply voltage, installation space, and wetted-material requirements. Include any known gas-liquid ratio, leakage, or continuous gas ingress.

DPGL800-BS is a dual-head gas-liquid diaphragm pump with a brushless DC motor for air-containing waste aspiration, vacuum generation and line evacuation in automated instruments. Reciprocating diaphragms handle gases and gas-liquid mixtures, providing an OEM component for vacuum aspiration and waste recovery.

The pump operates at 24 V, with a single-head free-flow gas rate of 6 L/min, maximum positive pressure of 30 kPa and maximum negative pressure below −90 kPa. Wetted materials combine PPS pump heads with EPDM diaphragms and EPDM valves, or PTFE diaphragms and FFKM valves. Connections are G1/8 female threads. Specified service life is 10,000 h at rated voltage in continuous operation.

OEM adaptation covers port orientation, wiring and installation, with development available for defined service-life targets. The solution is matched to the gas-liquid ratio, target vacuum, aspiration cycle and fluid conditions, then verified through aspiration and endurance testing in the actual system.

Typical Applications:

Gas suction, vacuum generation, gas-liquid waste extraction, gas-liquid mixture transfer, line evacuation

DPGL800-BS configurations

Select the required options (Material combination and Port direction) and save the configuration for your inquiry.

Product Type	Miniature Gas-Liquid Diaphragm Pump
Motor Type	Brushless DC Motor
Rated Voltage	DC 24V ±10%
Rated Power	≤17 W
Free-Flow Rate (Single Head)	6 L/min
Maximum Positive Pressure	30 kPa
Maximum Negative Pressure	<-90 kPa
Working Medium	Gas, gas-liquid mixture
Fluid Temperature	+5 °C–+40 °C
Interface	G1/8 (female thread)
Weight	600 g
Service Life	10,000 h
Pump Head Material	PPS
Diaphragm Material	EPDM / PTFE
Valve Material	EPDM / FFKM

6 L/min is single-head no-load gas flow, not waste-liquid flow or flow at ultimate vacuum.

Wetted materials, harness and dimensions follow the full model and supplied version.

The specified life of the brushless DPGL800 is 10,000 h at rated voltage under continuous operation. Actual life also depends on media, load, temperature and start-stop frequency.

Preparing 3D model

Frequently Asked Questions

Yes. In evacuation and vacuum aspiration applications, the DPGL800 can serve as a miniature diaphragm vacuum pump for gas aspiration, tubing evacuation, and vacuum generation. Select it according to the target vacuum level, system volume, and allowable evacuation time, and confirm compatibility between the actual medium and wetted materials.

Yes. Its specified media are gases and gas-liquid mixtures, making it suitable for aspiration where air and liquid enter together or intermittently. Continuous transfer of 100% liquid is outside its intended operating conditions; select a miniature liquid diaphragm pump for that duty. The waste liquid's chemical composition, concentration, and temperature must also be compatible with the wetted materials.

Provide the medium's composition, concentration, temperature, and gas-liquid condition, such as continuous air entrainment or intermittent liquid slugs; effective system volume, initial pressure, target vacuum, and allowable evacuation time; waste-liquid volume per cycle and cycle timing; tubing internal diameter, length, elevation difference, and outlet conditions; continuous operating time, supply voltage, installation space, and wetted-material requirements. Include any known gas-liquid ratio, leakage, or continuous gas ingress.

Need help selecting a diaphragm pump?

Share the fluid, flow rate, pressure, self-priming requirements, wetted materials, port type, and installation space. The Foreach engineering team can help confirm a suitable diaphragm pump configuration.

Contact an Engineer