1 HP Booster Pump – Multi-Stage 110/220V

The 1 HP Booster Pump (Multi-Stage, 110/220V) is a horizontal multi-stage centrifugal pump built for water treatment and distribution jobs that need sustained high pressure. It runs on either 110V or 220V single-phase power, field-selectable at installation. The multi-stage impeller design pushes discharge pressure well above what a single-stage pump of the same motor size can deliver. That makes this 1hp booster pump a good fit for systems that need 60 to 100+ PSI at the outlet – whether you’re overcoming back-pressure from RO membranes or pushing water flow through long distribution runs.

Typical Applications

• Post-tank repressurization for whole-house RO systems: Gravity-fed or atmospheric storage tanks drop pressure to near zero. This pump restores working pressure (typically 60-80 PSI) before water enters house distribution lines.
• Feed water pressure boost for commercial RO trains: Municipal or well supply with insufficient inlet pressure starves RO membranes and reduces recovery. This pump raises feed pressure to the required operating range.
• General pressure boosting in water treatment systems: Suitable anywhere in a treatment train that requires a pressure increase between stages – multimedia filters, carbon vessels, UV systems, or distribution headers.
• Remote and off-grid installations: Dual-voltage compatibility works with both standard grid power and generator or inverter supplies common in rural or temporary water supply setups.

Multi-Stage Design

Multi-stage centrifugal pumps use several impeller stages in series. Each stage adds to the discharge pressure, so total head at the outlet is the sum of all stages rather than the output of a single impeller. The result is higher working pressure at a given flow rate without a larger motor. Multi-stage pumps also run quieter and hold efficiency better at high-pressure duty cycles than single-stage designs, which lose efficiency quickly above their design point.

How This Pressure Booster Fits Your System

As a pressure booster, this pump has one job: take water that’s already flowing at low pressure and raise it to usable pressure. Most installations pair it with a pressure switch or pump controller so it starts and stops with demand. Many setups also add a pressure tank downstream to smooth out pressure swings and cut down on cycling. Size the pump to your system’s actual water flow rate (GPM or GPD) – undersizing restricts flow, oversizing wastes energy and shortens seal life. This 1 hp booster pump handles the boost; the pressure tank and controls around it handle the timing.

Installation and Electrical

• Dual voltage: 110V/220V field-selectable via internal wiring. Confirm supply voltage before wiring; incorrect voltage damages the motor.
• Electrical connection: Requires professional installation by a licensed electrician. Wire to a dedicated circuit with appropriate breaker sizing for the motor amperage at selected voltage.
• System integration: Connect through a pressure switch or pump controller for automatic start/stop based on system demand. Compatible with AMPAC commercial RO systems and custom water treatment assemblies. Verify inlet and outlet port sizing against your system plumbing before ordering.

Sizing Note

Match pump selection to your system’s actual flow rate (GPD or GPM) and required discharge pressure. Oversizing a booster pump wastes energy, generates excess heat, and shortens pump and seal life. Undersizing restricts flow and starves downstream equipment. For sizing assistance specific to your RO system or water treatment train, contact AMPAC technical support at (385) 530-1026.