Explore the Flojet Duplex II Series diaphragm pumps, versatile, high-performance units ideal for demand-driven fluid transfer. They are self-priming up to about 2.4 m vertical lift, capable of dry-running without damage, and fitted with features like built-in bypass, back-flow prevention, and durable diaphragm & valve assemblies. Available in various voltages and elastomers, they suit applications from automotive and chemical transfer to agricultural spraying, cleaning, or general purpose fluid delivery.
Got a question about Duplex II Series? Find the answers to our most common questions here.
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It’s a demand duty diaphragm pump from Flojet, offering reliable fluid transfer with automatic pressure switch control and robust components for longevity.
They can self-prime up to around 2.4 metres (≈ 8 feet) under normal conditions.
Yes, the design allows dry-running without immediate damage, though continuous dry running should still be avoided to preserve pump life.
Great for situations needing automatic demand switching (e.g. water systems, sprayers), for chemical transfer, vehicle washing, agricultural or general fluid delivery where reliable intermittent use is required.
Absolutely! If you’re unsure which pump is the best fit for your application, our team is here to help. You can pop up to our live chat for instant support, or simply send your requirements and pump details to sales@tfpumps.com. One of our experts will quickly recommend the most suitable pump for your needs.
