ARO PD20A-AAP-STT-B 2in Aluminum PTFE Air Double Diaphragm Pump

The ARO PD20A-AAP-STT-B is a new 2-inch air-operated double diaphragm (AODD) pump from Ingersoll Rand's ARO brand, featuring an aluminum fluid section body with PTFE diaphragms and PTFE ball check valves, all with NPT fluid port connections. The model number decodes as follows: PD = Pro Series diaphragm pump, 20 = 2-inch port size, A = aluminum center section, A = aluminum fluid sections, P = standard air valve, S = Santoprene seat material (STT suffix overrides to PTFE balls/seats/diaphragms), T = PTFE diaphragm, T = PTFE balls, B = bolt style clamp. The pump is rated to 120 PSIG (8.3 bar) maximum working pressure as confirmed by the nameplate, is CE and ATEX II 2GD X certified for use in explosive gas and dust atmospheres (Zone 1/21), and carries serial number SPK2283109. Typical applications include transfer of solvents, acids, chemicals, and other aggressive fluids in industrial, chemical processing, and paint/coatings environments; the pump includes a muffler/exhaust silencer and is suitable for self-priming and dry-run service.

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