370 6V DC Mini Air Pump

The Mitsumi-370-6V is a compact 6V DC diaphragm air pump built around the widely used 370-series micromotor, designed for quiet, low-power air delivery in small-scale applications. It operates from a nominal 6V supply (usable from about 5V to 7V), draws roughly 200 mA with no load, and produces an air flow of about 2 L/min at a maximum pressure of 400 mmHg or more. The diaphragm mechanism and rubber mounting isolate vibration, keeping noise at or below 55 dB, which makes this 6V mini air pump suitable for environments where quiet operation matters. The pump head is 27 mm in diameter, the motor body is 24.3 mm, and the air outlet accepts a standard 4.1 mm soft hose. Weighing approximately 52 g, the Mitsumi 370 air pump is easy to mount inside portable and handheld devices. Typical uses include aquarium aeration, sphygmomanometer cuff inflation, medical and laboratory equipment, robotic pneumatic systems, and DIY projects that need a reliable micro air pump. Because it is a diaphragm pump rather than a rotary vane type, it tolerates short-term pressure loading and provides consistent flow without oil or lubrication. This 370 diaphragm pump is a practical building block for any design requiring a small, dependable 6V oxygen pump.

1. Aquarium and fish tank aeration and oxygen circulation.
2. Blood pressure monitor cuff inflation and sphygmomanometer devices.
3. Medical and laboratory equipment requiring a compact 6V air pump.
4. Robotic and DIY pneumatic systems using a 370 diaphragm pump.
5. Portable and handheld devices that need a quiet micro air pump.
6. General low-flow air supply for hobby and prototyping projects.

1. Model: Mitsumi 370 series (MAP-AM-265 / AMP-AM-265 / R-14 A213 variants).
2. Product type: DC diaphragm air pump.
3. Rated voltage: 6V DC.
4. Operating voltage range: approximately 5V to 7V DC.
5. No-load current at 6V: approximately 200 mA (some variants rated 220–250 mA).
6. Air flow: approximately 2 L/min.
7. Maximum pressure: 400 mmHg or more.
8. Noise level: 55 dB or less.
9. Motor diameter: 24.3 mm.
10. Pump head diameter: 27 mm.
11. Air outlet diameter: 4.1 mm (fits 4 mm soft hose).
12. Weight: approximately 52 g (varies 50–64 g by variant).
13. Total length: approximately 67–71 mm depending on variant.
14. Operating principle: diaphragm with rubber isolation.