Yamada Pump NDP-800BST

The Yamada NDP-800BST is a heavy-duty, ultra-high-capacity 3-inch air-operated double diaphragm pump engineered for maximum fluid throughput and broad spectrum chemical processing. Equipped with female 3-inch NPT threaded connections, it provides a rigid, leak-proof fit for high-volume threaded industrial piping networks. Featuring a robust cast 316 stainless steel housing paired with primary PTFE (Teflon) diaphragms supported by a durable Neoprene (CR) backing, this unit delivers exceptional mechanical strength, dynamic sealing, and broad-spectrum chemical resistance across a wide temperature range. Powered by Yamada’s patented, oil-free C-Spool air-valve technology with a built-in reset button, the NDP-800BST guarantees reliable, stall-free operation without requiring air motor lubrication or high maintenance downtime. Delivering maximum flow rates exceeding 300 GPM while passing suspended solids up to 13/32” (10 mm), this seal-less liquid handling pump is an ideal solution for chemical handling, pharmaceutical manufacturing, corrosive fluid transfer, and high-purity industrial applications.