Flojet Duplex 11 Diaphragm Bypass Pumps. The Duplex II series of pumps incorporate the best technology and features developed by ITT Flojet. everything from the back flow preventer, check valves, bearings and diaphragm assembly to the motor, have been designed to make this truly the most advanced and reliable diaphragm pump available. higher efficiency of the pump is evident in the longer life of the motor pump unit. The new diaphragm design combined with the new valves, makes the pump capable of pulling higher dry vacuum. Duplex II is available in various performance ranges, voltages and with a choice of elastomers, making it easily adaptable to a diverse range of applications.

Model D3221B1211AR

2.1 Bar bypass

4.2 Lpm max flow

No pressure switch

24 Volt DC, 2.0 Amps

Buna diaphragm

Buna check valve

3/8"NPTF ports

Self-priming, up to 2.4m

Integrated back flow preventer

Polypropylene pump housing


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Flojet D3221B1211AR Duplex 11 Bypass Diaphragm Pump 2.1 Bar 4.2 Lpm 24V Buna

  • £143.09


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