Water Pressure Pump | Self-Priming | 240V | 380W

An automatic 240V AC self-priming pressure pump built for the household-scale water transfer applications that need real pressure and real flow — tank-fed homes, garden irrigation, water transfer between tanks, and rural property water reticulation. Significantly more capable than the 12V portable pumps; the standard format for permanent water installations on tank-supplied properties.

What 'Automatic' Means in This Context

The pump has a built-in pressure switch that cycles it on and off based on demand:

• Turn on a tap — pressure drops, pump engages, water flows
• Close the tap — pressure rises to cut-off, pump stops

No need to manually switch the pump on every time you need water. The pump sits idle 99% of the time, then runs on demand when a tap is opened. This is the standard configuration for residential tank-supply pressurisation.

Performance

• Power: 380W
• Voltage: 220-240V AC, 50Hz (suits Australian mains)
• Maximum flow: 45-80 L/min
• Suction range: up to 8 metres lift
• Maximum head: 22-35 metres
• Speed: 2850 r/min
• Suction range model: 1AWZB400

At 45-80 L/min, this pump comfortably runs multiple taps, a shower, and a washing machine simultaneously off a tank supply — the flow-rate range covers everyday household demand without the user noticing the pump cycling.

Where 8m Suction Range Matters

The pump can pull water up to 8 metres below itself — sufficient for:

• Underground tank installations (typical 4-6m depth)
• Above-ground tanks placed at lower elevation than the house
• Bore/well installations within 8m depth (deeper installations need a submersible pump instead)

Above 8m vertical lift, atmospheric physics defeats any surface-mounted pump regardless of motor size — physics, not marketing, sets that limit.

Build

• Brand: Robei Mechanical
• Model: 1AWZB400
• Pump type: automatic self-priming pressure pump with flow control
• Dimensions: 27 × 20 × 25 cm (L × W × H)
• Application: clear water, agricultural irrigation, rainwater
• Warranty: 6 months manufacturer

Where This Pump Fits

• Rural and semi-rural properties with rainwater tank supply
• Hobby farms needing irrigation pressurisation
• Renovations replacing an aged pressure pump
• Greenhouse and shadehouse installations
• Water transfer applications between tanks or to remote outlets

Not suited to: deep-well bore installations beyond 8m depth (use a submersible instead), high-pressure RO booster applications (use a dedicated 24V RO booster), or potable mains-supplied homes (you already have mains pressure — a pump won't help).