Description

Evolution Aqua Airtech 150 Diaphragm Kit

The Airtech 150 Diaphragm Kit is a genuine Evolution Aqua replacement part designed to restore the performance of an Airtech 150 pond air pump when its original diaphragms become worn.

Over time, the diaphragms inside an air pump naturally deteriorate through continuous use. This can lead to reduced airflow, weaker bubbling and less effective pond aeration. Replacing these components can help restore normal performance without the expense of purchasing a complete new pump.

Designed specifically for compatible Evolution Aqua Airtech pumps, this replacement kit provides a practical solution for routine maintenance and repairs.

Why Replace Your Airtech 150 Diaphragm Kit?

Pond air pumps work hard, often operating continuously to supply oxygen to fish, beneficial filter bacteria and other aquatic life.

Inside the pump, flexible diaphragms move repeatedly to generate airflow. As these components age, they can lose flexibility, become damaged or eventually split.

Common signs of worn diaphragms include:

• Reduced airflow from air stones or diffusers.
• Weaker bubbling than usual.
• Changes in the pump’s normal operating sound.
• Poorer aeration despite the pump continuing to run.
• A sudden reduction or complete loss of air output.

These symptoms can have other causes, including blocked air stones or restricted airline, so it is worth checking the complete aeration system before replacing parts.

Genuine Evolution Aqua Airtech 150 Diaphragm Kit

Using genuine replacement components helps maintain the correct fit and operation of your Evolution Aqua air pump.

This kit contains the paired diaphragm assemblies required for servicing compatible Airtech 130 and 150 models.

The replacement components include:

• Two replacement diaphragms.
• Two diaphragm frames.
• Two securing nuts.
• Two washers.

The original diaphragm frame screws must be retained and reused during installation.

Replacing worn diaphragms is often considerably more economical than replacing the entire air pump, particularly when the motor and other internal components remain in good working condition.

Maintaining Reliable Pond Aeration

Good aeration is essential for a healthy pond, particularly where koi or other fish are stocked.

Air pumps help support dissolved oxygen levels and can also provide airflow to biological filtration systems, including moving-bed filters.

When airflow falls, oxygen delivery and filtration performance may be affected. This makes prompt investigation of reduced air output particularly important during warmer weather, when pond oxygen levels can become more challenging.

Keeping replacement diaphragms available can also help minimise downtime if your pond relies heavily on continuous aeration.

Fitting the Airtech 150 Replacement Diaphragms

The diaphragm kit is designed to be fitted as a replacement for the original components inside the pump.

Always disconnect the air pump from the electricity supply before opening its housing.

Follow Evolution Aqua’s maintenance instructions, taking care to remove the worn assemblies and install the replacements in the correct positions.

Retain the original frame screws, as these are not included with the kit.

Before restarting the pump, check that the components are correctly secured and that the housing has been reassembled properly.

If you are unsure about servicing electrical equipment, seek assistance from a suitably competent person.

Compatibility and Choosing the Correct Kit

This replacement kit is suitable for the Evolution Aqua Airtech 150 and is also used with compatible Airtech 130 pumps.

Other Airtech models may require different diaphragm kits, so always check the model printed on your pump before ordering.

If your pump is producing less air than expected, the Airtech 150 Diaphragm Kit offers a cost-effective way to renew worn components and help keep your pond aeration system working efficiently.

If you have any questions about the Airtech 150 Diaphragm Kit, please contact us and a member of our friendly store team will be more than happy to answer all of your questions.

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