Evolution Aqua Airtech 95 Diaphragm Kit

Evolution Aqua Airtech 95 Diaphragm Kit

The AIRPUMP95D 15mm service kit for an Airtech 95

The Evolution Aqua Airtech 95 Diaphragm Kit replaces the diaphragm components in a compatible Airtech 95 pond air pump. The manufacturer reference is AIRPUMP95D, identified in Evolution Aqua’s spares range as the 15mm version. SKS supplies this replacement under code AP4846. It is a service part for an existing pump, allowing worn diaphragm components to be renewed while retaining the rest of a serviceable unit.

Product identification

Brand	Evolution Aqua
Pump listed by SKS	Airtech 95
Manufacturer code	AIRPUMP95D
Version designation	15mm
Supplier code	AP4846

Check the version before ordering

Evolution Aqua currently describes AIRPUMP95D as its 60/80/95 15mm diaphragm kit. The manufacturer also lists a separate 80 10mm kit, so the number on an older pump is not enough on its own to establish which replacement it needs. Match the manufacturer reference and the original assembly, especially when identifying an older Airtech 80.

Keep a clear photograph of the pump’s identification label with your maintenance records. If the pump has been bought second-hand or its service history is unknown, a photograph of the original part can also help resolve a query. Ask us to check uncertain compatibility before placing an order; a similar appearance in a product photograph is not a reliable substitute for a part-number match.

When a diaphragm kit may help

Evolution Aqua identifies worn diaphragms as a possible cause of declining air output and recommends annual diaphragm replacement in its air-pump support guidance. This gives owners a useful service-planning reference, rather than waiting until a loss of bubbling becomes obvious. It does not mean that every low-output fault is caused by a diaphragm.

Record what has changed before arranging a repair. For example, has the output reduced gradually, or did it change after moving a diffuser, altering a valve or adding another airline? That information helps whoever assesses the pump distinguish a developing mechanical fault from a change to the connected installation. Note whether all outlets are affected or only one branch.

Consider the whole air system

An air-pump repair should be assessed in the context of the pond it serves. Evolution Aqua publishes output figures at different depths; the maximum headline flow is not the same as the amount delivered at a submerged outlet. Replacing a worn part aims to restore the existing pump’s operation, rather than increase its model rating or compensate for a newly enlarged aeration system.

If the pond or filter arrangement has changed since the pump was selected, compare the requirements with our pond air pump range before deciding between repair and replacement. Keep the working depth, airline arrangement and intended outlets in your notes so that the comparison is based on your installation.

Use the Air Pump 75/95 service instructions

The manufacturer’s manual contains a dedicated Air Pump 75/95 exploded drawing and maintenance section. These distinguish the diaphragms, frames, activating arm and electromagnets. Disconnect the electrical supply and allow the pump to cool before maintenance. Never add oil: Evolution Aqua describes this as an oil-less compressor.

The illustrated diaphragm procedure covers removal of the casing and diaphragm housing, release of the central U-nut, correct seating of the rubber studs and diaphragm rim, and reassembly. Follow the complete Evolution Aqua Airpump manual for your model. Keep removed fixings organised and check the original arrangement before disturbing it.

The same 75/95 section recommends air-filter cleaning every six months, with the filter dried before refitting. Reviewing that separate maintenance item while servicing the pump avoids overlooking the air intake. Electrical damage or wet electrical components require appropriate professional assessment; a diaphragm change is not a remedy for those faults.

If the pump still does not work

Evolution Aqua’s support team specifically identifies the electromagnet as another possible cause when a pump remains inoperative after diaphragm replacement. A second diaphragm kit should therefore not be the automatic next purchase. Give the person investigating the fault the part reference already fitted, the symptoms before and after repair, and any relevant photographs.

Our air pump accessories and spares collection provides a starting point for other components. Each replacement still needs its own compatibility check. This listing supplies the diaphragm kit; a complete pump, activating arm, electromagnet, airline and diffusers are separate products.

Plan the service around the pond

Arrange suitable alternative aeration before taking an essential pump out of use, particularly where the same unit serves both the pond and a filter. Have the replacement and the relevant instructions to hand before beginning. After reassembly, check the connected outlets and listen for unusual noise, then retain the fitting date and part code for the next service.