A booster pump is a low-pressure feed pump that raises pretreated water from atmospheric to 3–5 bar — enough to satisfy the high-pressure pump's NPSH requirement and to support an energy-recovery device's circulation loop. Typically a single- or two-stage centrifugal pump in 316L or super-duplex SS. It draws from the cartridge-filter outlet and discharges into the HP pump suction (and, on PX-equipped systems, into the PX feed inlet). No SWRO HP pump is self-priming. The booster ensures the HP pump never cavitates and provides the head needed to circulate the PX brine-feed loop. On a PX-equipped SWRO system, the booster handles permeate flow only (40% of total feed). Without PX, it must handle full feed flow. Typically 30–50 m (3–5 bar) — enough to satisfy HP pump NPSH plus circulation losses through the PX. Only if feed gravity-feeds at sufficient pressure. In nearly all real installations a booster is mandatory. ForeverPure has supplied desalination, high-pressure pumps, and energy-recovery devices to commercial and industrial customers since 2003. Contact our engineers for sizing, quotes, or technical support.Booster Pump
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