Maintenance Kit for Airmax RP50 (72R) 1/2 HP Piston Compressor The RP50 piston compressor runs continuously through the pond season. Over two to three years, its valve discs, piston rings, and gaskets wear and air output drops. This maintenance kit bundles all the wear components for the RP50 (also designated 72R) in one package, so you can restore the compressor to full output capacity without sourcing individual parts. Performing this service annually prevents mid-season output failures. Compatible With Airmax RP50 (72R) 1/2 HP piston compressor Kit Contents Valve discs, piston rings, gaskets, and replacement wear components Service Interval Annually or every 2 years, depending on runtime How to Service Unplug and disconnect the compressor from airline before disassembly. Follow the RP50 service manual for disassembly sequence. Replace all kit components even if individual parts appear serviceable. Wear is often not visible until failure. Reassemble, restart, and measure output at the diffuser against your pre-service baseline. A well-maintained RP50 should restore close to original output after this service. Fits the Airmax RP50 (72R) 1/2 HP piston compressor only. Not compatible with the KA20 or KA40 diaphragm aerator series.
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