ARO PD20A-AAP-STT-B 2in NPT Aluminum PTFE AODD Pump

The ARO PD20A-AAP-STT-B is a 2-inch air-operated double diaphragm (AODD) pump manufactured by ARO (Ingersoll Rand) in Bryan, OH, USA, with a maximum working pressure of 120 psig (8.3 bar) as confirmed on the nameplate. The part number decodes as follows: PD = Pro Series diaphragm pump; 20 = 2-inch port size; A = aluminum pump body/fluid sections; A = aluminum center section; P = pilot-operated (non-stall) air distribution valve; S = PTFE diaphragms; T = PTFE outer balls (check valve balls); T = PTFE inner balls (check valve seats); B = bolt-together fluid section construction. The pump features CE and ATEX II 2GD X hazardous-location certification for use with both gas and dust atmospheres, making it suitable for flammable fluid transfer, chemical processing, and paint/coating operations. Included with the pump (visible in photos) is a large cylindrical mesh exhaust muffler, still in factory packaging. This unit is new-other condition — it shows minor handling marks consistent with pallet storage but has never been installed or operated, and the original factory box label (serial SPK2163205) confirms it shipped as a complete 2" Diaphragm Pump Assembly.

Product Specifications