**Mini Diaphragm Vacuum Pump (DC Brushless Motor)**
**Model NO.:** TF30B-D
**Trademark:** TOPSFLO
**Specification:** CE, IEC, RoHS
**Origin:** China
**HS Code:** 84135020
TOPSFLO mini diaphragm pumps and vacuum pumps are designed based on a simple yet effective principle. The rotational power from the motor is converted into oscillating motion through an eccentric mechanism, which moves up and down around its central point. This motion is then transferred to a flexible diaphragm via a connecting rod, creating a pumping action when combined with inlet and outlet valves.
Our micro diaphragm pumps come in four different motor options, each tailored for specific performance and application needs:
- **A. Premium Duty Brush DC Motor**
Long life of 5,000 hours, offering greater durability than standard DC membrane pumps.
- **B. Economical Brush DC Motor**
Cost-effective option with a lifespan of 1,500 hours.
- **C. Coreless Brushless DC Motor**
A high-performance, vibration-free motor that runs almost silently, highly dynamic, and extremely durable with an ideal lifetime of 15,000 hours.
- **D. Coreless Brushless DC Motor with External Controller**
Combines all benefits of the brushless motor and adds advanced control features such as PWM or 0–5V speed adjustment, braking, and instant starting capabilities.
These pumps are widely used in various fields including industrial liquid and vacuum applications, portable analytical instruments, medical diagnostic equipment, printer ink systems, fireplace devices, and respiration monitors.
**Product Features:**
- **Package:** Includes detailed images of the pump and its components.
- **Dimensions:** 80mm x 31mm x 60mm
- **Weight:** 250g
- **Inlet/Outlet:** OD 4.9mm / ID 2.8mm, recommended hose ID: 4.0mm
- **Noise Level:** Less than 50dB at 1 meter
- **Materials:** Pump head made of nylon, diaphragm of EPDM/PTFE, valve of EPDM/FPM
**Technical Specifications:**
| Model | Liquid Pump (Item Number) | Vacuum Pump (Item Number) | Rated Voltage | No-load Current | Max Head | Max Vacuum | Max Flow |
|------------|----------------------------------|-----------------------------------|---------------|-----------------|----------|------------|----------------|
| TF30B-C | TF30B-C12-W1003 (internal controller) | TF30B-C12-V6504 (internal controller) | 6 / 12 / 24 | 0.4 / 0.24 / 0.15 | ≥10 m | -65 kPa | Water: 0.35 L/min; Gas: 4.5 L/min |
| TF30B-D | TF30B-D12-W1003 (external controller) | TF30B-D12-V6504 (external controller) | 6 / 12 / 24 | 0.4 / 0.24 / 0.15 | ≥10 m | -65 kPa | Water: 0.35 L/min; Gas: 4.5 L/min |
**Notes:**
- "W" stands for water/liquid pump, "V" for vacuum pump.
- "6/12/24" indicates optional voltages.
- Motor types:
- "C": Coreless brushless DC motor with dual ball bearings (longer life >15,000 hours).
- "D": Coreless brushless DC motor with external controller (same long life, with added control functions).
- Custom flow rates (e.g., 0.05L, 0.15L, 0.2L, 0.3L) can be provided upon request.
We are a manufacturer dedicated to providing high-quality products and excellent service. We welcome your inquiries and suggestions. Feel free to contact us for more information.
**Contact Us:**
Tel: +86-731-82739266
For more details, please visit: [www.topsflo.en.alibaba.com](http://www.topsflo.en.alibaba.com)
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