All-Flo AL-20T Double Diaphragm Pneumatic Pump

All-Flo AL-20T is a 2-inch, aluminum-bodied, air-operated double-diaphragm (AODD) pump designed for lubrication-free fluid transfer in demanding environments. It uses a PTFE (Teflon) diaphragm (2" model variant A200-NAA-TTYT-B30) and a lubrication-free, non-stalling air valve, with an all-plastic air system that minimizes corrosion risk and eliminates the need for oils. The AL-20T features a 2-inch liquid passage and, as part of All-Flo’s metal-housing lineup, provides robust, non-electrical pumping performance. Operating pressure ranges from 20 to 100 psi, enabling reliable transfer across a range of viscosities while maintaining consistent flow. The design emphasizes quick access for inspection and maintenance, with a two-diaphragm arrangement that works in unison to move fluids, making it suitable for bulk liquid transfer, chemical handling, and dewatering tasks in industries that require a rugged, corrosion-resistant solution with minimal moving parts.