Medo LA28-B

Medo LA28-B

Compact Medo linear piston air pump for quiet, low maintenance aeration

Medo LA28-B is a 28 LPM rated output Medo linear piston air pump for quiet, oil-free pond aeration, koi pond oxygenation, air stones, diffuser discs and aerated filter chambers. Medo pumps use a linear piston design rather than a traditional diaphragm arrangement, which makes them a strong option where long term reliability and low maintenance are important.

The linear piston system uses an electromagnet and spring driven piston to create airflow with fewer wearing parts than many conventional pump designs. That means there are no diaphragms or belts to replace as part of routine pond maintenance, making the LA28-B especially useful for pond owners who want a dependable air supply with minimal servicing.

This compact 28 LPM Medo model is best chosen by matching the airflow to the pond depth, filter chamber depth and number of diffusers being used. It can be used for koi ponds, ornamental ponds, aerated biological filters and oxygen support, provided the pump is installed in a dry, ventilated and protected position with suitable airline and non-return valves.

Key features

• 28 LPM rated output air output for pond and filter aeration
• Linear piston design with no routine diaphragm replacement
• Quiet, oil-free operation for garden pond and koi pond use
• Suitable for air stones, diffuser discs and biological filter chambers
• Fewer internal wearing parts than many conventional diaphragm pumps
• Useful for pond keepers who want reliable aeration with low servicing

Technical specifications

• Brand: Medo
• Model: LA28-B
• Pump type: Linear piston air pump
• Air output: 28 LPM rated output
• Additional airflow note: Up to approx. 41 LPM open flow
• Rated pressure: 0.11 bar
• Maximum pressure: 0.2 bar
• Power consumption: 29 W
• Voltage: 230V
• Frequency: 50 Hz
• Noise level: 38 dB(A) at 1m
• Dimensions: 207 mm x 182 mm x 205 mm
• Weight: 2.8 kg

Installation and sizing guidance

For best results, place the air pump in a dry, well ventilated and weather protected location. It is normally better to position the pump above the pond water level. If the pump is lower than the water level, fit suitable non-return valves to reduce the risk of water running back down the airline and damaging the pump.

• Use the correct diameter airline for the airflow being produced.
• Use an air manifold if the pump is feeding more than one diffuser.
• Avoid excessive back pressure from blocked stones, restricted airline or deep installations.
• Check and clean inlet filters as part of routine maintenance.
• Do not allow the pump to sit where it can flood, overheat or draw in dirt.

As a general guide, larger diffuser discs and deeper ponds need more airflow and pressure than shallow air stones. If several outlets are being used, balance the airflow through a manifold rather than forcing all of the output through one small stone.

Related air pump products

Compare this model with neighbouring air pumps in the same range, or browse the airline and diffuser accessories needed to complete the installation.

• Medo LA45-C
• Medo LA60-B
• Medo LA80-B
• Medo LA100- A
• Medo LA120-A
• Browse all pond air pumps
• Airline, manifolds and diffuser accessories
• oxygenation and aeration guide for koi ponds