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BL Series Disc Pump

This entry-level piezoelectric disc pump strikes a balance between performance and cost. Combining silent operation, pulsation-free flow, millisecond response, and high precision in a compact form, these piezoelectric disc pumps provide accurate, ultra-smooth pressure and airflow control of gases. The BL Series Disc Pump can be mounted as a Smart Pump Module that includes integrated drive electronics and pressure sensing.

Key Product Facts
  • Free Flow:1.65 L/min
  • Stall Pressure / Vacuum:300 mbar / -200 mbar
  • Silent:<10 dB
  • Compact Form Factor:29 mm diameter / 5 g weight
  • Operating Temperature:41°F to 104°F (5°C to 40°C)

Product Information

General Specification
Characteristic Specification
Free Flow Rate 1.65 L/min
Pressure Range -200 mbar to 300 mbar
Silent1 <10 dB
Operating Temperature 41°F to 104°F (5°C to 40°C)
Control Precision2 Less Than 0.1%
Response Time Ultra-fast Millisecond Response
Turn-down Ratio3 Infinite
Recommended Filtration4 Less Than 3 μm
Compact Size 29 mm Diameter
Lightweight 5 g
Humidity Range5 0 to 95% RH
Pumping Medium6 Air
1Per ISO 226:2003 and related studies; 30 cm equivalent measurement distance.
2Pressure and flow: requires pump under closed-loop control with suitable sensor and drive electronics.
3The disc pump's piezoelectric drive actuator has no stall speed. The pump can be controlled continuously between 0 and 100% maximum output.
4The use of an inlet filter with a pore size of 3 μm or less is strongly recommended to prevent the ingress of particulates that might otherwise limit the lifetime of the pump.
5Non-condensing; ingress of liquid-phase water will halt pump operation.
6Liquid may be pumped indirectly in a pressure-driven flow or air displacement regime.
Polyarylamide Stainless steel
PET Acrylated urethane
Polyimide Gold
Nickel Lead zirconium titanium oxide
Aluminium Titanium
Silver Copper-Tungsten
Epoxy Nitrile

All disc pumps are RoHS compliant.

Electrical Operation
  • Typical driver requires 3.7 to 5 VDC power supply.
  • Pump requires AC drive waveform of 20-22 kHz. Pump Drive Voltage must not exceed 48 Vrms.
  • Power: 0 to 1 W (continuous)
  • Pump efficiency is application dependent.
  • Drive PCB and evaluation electronics are available.
  • Reference circuits and firmware are available to support product integration.
Performance Graph
Dimensional Views
Mounting Details & Port Configuration

Get Started

Are you ready to get started? You can be up and running one of our disc pumps in a matter of minutes with the ‘plug and play’ functionality of our Development Kit. We make it easy for you to test this new technology and see it’s advanced functionality. 

Make sure to check out our extensive resources and literature – User Manuals, How-To Videos, and Application Notes – to guide you from initial set-up, to using the disc pumps for in-situ applications. Our Frequently Asked Questions covers any further information you may need.

Piezoelectric Disc Pump Development Kit

Our Disc Pump Development Kit enables the rapid evaluation of one or multiple pumps, together with solenoid valves, making it easy to test system-level prototypes and evaluate the unique features of the piezoelectric disc pump technology.

Watch this video of our Business Development Manager, John Watson, as he unboxes a Disc Pump Development Kit and explains everything that comes with it:

  • 1x Development Kit Motherboard
  • 1x General Purpose Drive PCB mounted on the motherboard, with protective cap
  • 1x pneumatic accessories kit (tubing, filters and connectors)
  • 1x precision orifice (used, for example, to bleed pressure from systems)
  • 1x cable kit for connecting Smart Pump Modules and valves to the kit
  • 1x USB cable for connecting the kit to a PC
  • 1x pump mounting kit (bolts and O-rings)

Note that Disc Pumps and valves must be purchased separately. This enables customers to select the exact model(s) that they wish to test. For help selecting the right model for your application, please speak to a Lee Sales Engineer.

Getting Started Resources

These Getting Started Resources act as a primary resource for those starting out with the disc pumps. The resources include safety information, signposting to other resources, and guidance for running and controlling the disc pumps.

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 Configuration Stall Pressure1 Free Flow1 Stall Vacuum1 Request Information
UBLB5401000A Series 300 mbar 0.50 L/min 200 mbar Request
UBLB5401200A Series 270 mbar 0.80 L/min 200 mbar Request
UBLB5400000A Parallel 170 mbar 0.95 L/min 170 mbar Request
UBLB5400200A Parallel 160 mbar 1.65 L/min 150 mbar Request
1Continuous operation at 1 W drive power (into pump). Performance data collected under normal temperature and pressure and ambient humidity conditions. Performance under other conditions may vary. In particular, note that performance decreases with altitude and may decrease at elevated temperature.

CAD Envelopes

CAD Envelope


Software & Electronics

Software includes PC-based interface and code snippets for running and controlling the disc pumps. The Electronics Reference Design package contains PCB and firmware reference designs together with supporting technical guides. This provides everything necessary for customers to design their own drive electronics.

Smart Pump Module

The Smart Pump Module combines our piezoelectric disc pumps with drive electronics and pressure sensing in a tightly-integrated package.

  • Standalone pressure/vacuum regulation
  • Up to 600 mbar pressure, -400 mbar vacuum or 2 L/min flow depending on pump choice
  • Compact and lightweight (11 g)
  • Simple 5-wire interface for UART or I2C communication
  • Digital and analog control options available
Get in touch


From plugs to solenoid valves, there’s a vast array of products that The Lee Company can offer. If you’d like to discuss the best solution for your specific application or to learn more about our capabilities, use-cases, or quality standards, contact your local Lee sales engineer.