Small DC 12V Diaphragm Air Pump (DC Brush motor)
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**Air Pump / Vacuum Pump / DC Pump (Diaphragm Pump)**
**Product Description:**
TOPSFLO micro diaphragm pumps and compressors operate on a simple principle: the rotational power from the motor is converted into oscillating motion by an eccentric, which moves up and down its central point. This motion is then transferred to a diaphragm via a connecting rod, creating a pumping action in conjunction with inlet and outlet valves. These pumps are ideal for applications requiring precision, reliability, and quiet operation.
**Technical Features:**
1. High performance-to-size ratio
2. Quiet operation
3. Long-lasting and reliable performance
4. Contaminant-free flow
5. Minimal vibration
6. Excellent gas tightness
7. Strong chemical resistance
8. A versatile solution for various applications
**Applications:**
TOPSFLO pumps are widely used across multiple industries due to their flexibility and durability. They have proven effective in the following areas:
- Industrial pressure and vacuum systems
- Portable analytical instruments
- Medical diagnostic equipment
- Air quality sampling monitors
- Respiration monitoring systems
- Gas or odor leak detectors
Our Micro Diaphragm Pumps are available with four different drive motors, each designed to meet specific needs:
**A - Premium Duty Brush DC Motor**
- Lifetime: 5,000 hours
- Offers longer endurance compared to standard DC membrane pumps
**B - Economical Brush DC Motor**
- Lifetime: 1,500 hours
- Cost-effective option for basic applications
**C - Coreless Brushless DC Motor**
- Vibration and spark-free operation
- Almost silent, highly dynamic, and extremely durable
- Ideal lifespan: 15,000 hours
**D - Coreless Brushless DC Motor with External Controller**
- Combines all benefits of the coreless brushless motor
- Provides advanced control functions such as PWM, 0–5V speed adjustment, braking, and instant start-up
- Ideal lifespan: 15,000 hours
**H - Brushless DC Motor**
- Long lifespan: 10,000 hours
- Suitable for high-performance applications
**Package:**
The pump comes in a compact and durable package, suitable for easy integration into various systems. It weighs 220g and measures 80mm x 30.5mm x 59mm. The inlet and outlet ports feature locknuts with OD 4.9mm and ID 2.8mm, and a recommended hose size of ID 4.0mm.
**Key Specifications:**
- **Model:** TM30B-A
- **Voltage Options:** 6V, 12V, 24V
- **Max Pressure:** 100 kPa
- **Max Vacuum:** -55 kPa
- **Flow Rate:** 5 L/min
- **Noise Level:** <50 dB at 1 meter
- **Materials:** Pump head – Nylon; Membrane – EPDM/PTFE; Valve – EPDM/FPM
- **Motor Type:** "A" – Premium Brush DC Motor (lifetime > 3,000 hours)
**Comparison with TZ Economic Series:**
Compared to the TZ series, our TM30B-A model offers greater stability and higher performance, thanks to imported bearings and a more durable membrane.
**Additional Information:**
- "P" stands for pressure pump, "V" for vacuum pump.
- Different voltage options are available for flexible use.
- The pump is certified under CE, IEC, and RoHS standards.
- Origin: China
- HS Code: 84137090
**Contact Us:**
We are a manufacturer dedicated to providing high-quality diaphragm pumps tailored to your needs. We welcome any inquiries or suggestions that will help us better serve you.
**Tel:** +86-731-82739266
**Website:** [www.topsflo.en.alibaba.com](http://www.topsflo.en.alibaba.com)
For more detailed information, please visit our website.