Mac 3, E-Flow, Electronic Flow Switch

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£54.99 - £65.99 (Inc. Vat)

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SKU VEFC002M00 Categories ,


The E-Flow electronic flow switch. Pump control for pressure boosting by flow detection.

  • Starts a pump when water flow is detected
  • Dry Run Protection
  • For Header Tank Boosting or In-line Boosting of Low Mains Water Pressure
  • 1” (25mm) BSP In-line Fitting
  • Simple Installation
  • Any Orientation Installation
  • Single Phase
  • Clean Water Only
  • IP65

How Does It Work?

Mac3 E-Flow is a flow activated electronic booster pump controller. When a flow is detected in the pipe, E-Flow runs the pump to increase pressure in the system until it detects that the flow has stopped. E-Flow can control a single phase pump of up to 2 Hp (1.5kW).

E-Flow features an in-line mounting, which fits onto a pipe with a 1” (25mm) threaded male connector and can be mounted in any direction as the installation or surroundings require.

E-Flow features dry run protection with a warning light on the control panel to show a system error.

This product is designed for systems with clean water only.

Technical Information




Calcium Filled Polypropylene / ABS






In-Line, 1” (25mm) BSP

Working Pressure

1.5 – 8 bar

Maximum Overpressure

12 bar

Minimum Flow

1 litre/min

Maximum Flow

100 litre/min

Operating Temperature

0°C – +50°C

Liquid Temperature

1°C – 40°C

Liquid Type

Clean Water – No Solids – pH 5 – 9

Ingress Protection



Supply Voltage

220-240Vac 50-60Hz Single Phase

Pump Power

1.5kW (2 Hp)

Pump Current


Contact Rating / Output Characteristics

AC2500 VA Resistive Load CosPhi=1 AC1875 VA Resistive Load CosPhi=0.4

Number Of Operations

30 Operations/Minute Max

Rainwater Harvesting Service & Maintenance

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