Ingersoll Rand 66605J-344 Double Diaphragm Pump

The Ingersoll Rand ARO 66605J-344 is a 1/2-inch classic‑style, non‑metallic air‑operated diaphragm (AODD) pump designed for reliable industrial fluid transfer. Its polypropylene body houses a PTFE ball and PTFE seat with a PTFE/Santoprene diaphragm, and it uses 1/2‑14 NPTF inlet/outlet fittings plus a 1/4‑18 NPTF air inlet, with a maximum air inlet pressure of 100 psi (6.9 bar). The pump delivers up to 13 gpm (49.2 L/min) at a 1:1 ratio and per‑cycle displacement of about 0.04 gpm on the ball path, while tolerating temperatures from -40 to 350 °F (-40 to 177 °C) and handling solids up to 3/32" (2.4 mm); it weighs approximately 9.5 lb and includes an integral muffler for quieter operation. It is designed for fluids compatible with polypropylene and PTFE components, making it suitable for a range of industrial fluid transfer tasks.