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Keep your KoiAir 1 (KA20) or KoiAir 2 (KA40) compressor running at its best. Over time, diaphragms can tear, or wear and breakdown, causing decreased system performance. Airmax diaphragm maintenance kits contain the parts you need to restore your system to its maximum potential. Kits should typically be installed every 12-36 months.
KA20 Diaphragm Installation ManualKA40 Diaphragm Installation Manual