ARO 66605J-344 Air Operated Double Diaphragm Pump

The ARO 66605J-344 is a 1/2-inch, non-metallic air‑operated double diaphragm (AODD) pump from Ingersoll Rand’s ARO line, engineered for reliable chemical transfer and general industrial fluid handling. It uses PTFE diaphragms, balls, and seats in a polypropylene housing with 1/2" NPTF ports, and a 1-piece multiport manifold for straightforward installation. Capable of delivering up to 13 GPM (49.2 L/min) and developing as much as 100 psi (6.9 bar), this compact pump is designed to move viscous or chemically aggressive fluids where centrifugal pumps aren’t ideal, while handling solids up to 3/32" (2.4 mm). Weighing about 9.1 lb, the unit balances portability with durability for on-site transfer tasks. The 66605J-344 is part of ARO’s Compact Series and, per the series specifications, operates with a 1:1 air-to-fluid ratio, aligning performance with a broad range of chemical processing and wastewater applications. Typical uses include chemical transfer, paint and coatings handling, and general liquid transfer in environments where material compatibility with PTFE components is essential. This model emphasizes corrosion resistance and low-maintenance operation, making it a practical choice for compact, feature-rich AODD pumping.