Shurflo Auto Demand Diaphragm Pump 115V Max 3.3 GPM 45 PSI Switch - 2088-594-154BX

Genuine Shurflo (Pentair) automatic demand diaphragm pump in boxed retail packaging. The 2088-594-154BX is the boxed version of the 2088-594-154, designed for water delivery, spraying, and liquid transfer. This is an original Shurflo pump, not a copy or house brand.

Powered by 115V AC, this positive-displacement, 3-chamber pump delivers 3.3 GPM open flow. The automatic demand pressure switch starts the pump at 25 PSI and shuts it off at 45 PSI. A built-in check valve prevents reverse flow, and the permanent magnet motor includes thermal protection.

Self-priming up to 9 feet vertically, this pump can run dry without damage and is rated for intermittent duty. The BX boxed version includes 27-inch, 18 AWG wire leads with a switch.

Specifications

• Model: 2088-594-154BX
• Power: 115 VAC
• Open flow: 3.3 GPM / 12.5 L/min / 198 GPH
• Pump design: Positive displacement, 3-chamber diaphragm
• Factory pressure settings: 45 PSI shutoff / 25 PSI turn-on
• Pressure switch adjustment range: 30–50 PSI
• Self-priming: Up to 9 ft vertically
• Maximum inlet pressure: 30 PSI
• Maximum liquid temperature: 130°F (54°C)
• Duty rating: Intermittent
• Built-in check valve to prevent reverse flow
• Can run dry without damage

Construction and Electrical

• Housing: Polypropylene
• Valves and diaphragm: Santoprene
• Fasteners: Zinc-plated steel
• Motor: Thermally protected permanent magnet
• Motor part number: 11-150-10
• Wiring: 27-inch, 18 AWG wire leads with switch
• NSF listed; UL/CSA recognized component

Connections, Dimensions and Mounting

• Inlet and discharge: 1/2-inch–14 NPSM male parallel thread
• Pump dimensions: 8.625 × 5.0 × 4.37 in
• Mounting: Can be mounted in any position
• Base plate: Four mounting holes
• Net weight: 5.1 lb (2.31 kg)

The 3.3 GPM rating is measured at open flow, not at the 45 PSI shutoff pressure. Verify compatibility with the liquid being pumped before use.