Vega Pump Accessories

The Vega control equipment range is everything around the pump that makes it start, stop and last: float switches, automatic flow controllers, pressure tanks, pressure switches, gauges, connectors and replacement bladders. Most pump failures come from dry running and rapid on-off cycling, and these parts prevent both. This guide explains what each part does, how to size a pressure tank, and current prices.

Flow controller or pressure tank?

A booster pump needs something to tell it when to run. There are two common ways, and many installations use both.

Rapid cycling kills pumps. If a pump clicks on and off every few seconds, the bladder in the pressure tank has failed or lost its air charge, or there is a leak. Fix it quickly: every start heats the motor and wears the switch.

Automatic flow controllers

Each has automatic start on pressure drop, stop on no flow, dry-run protection and a built-in gauge and check valve, for single-phase booster and pressure pumps. Choose the rating above the pump's starting current.

Pressure tanks

Steel tanks with a replaceable EPDM bladder, rated 8 bar. The bigger the tank, the fewer times the pump starts.

Sizing a pressure tank

A simple rule: allow about one litre of tank for every litre per minute of pump flow, and never less than 24 litres on a fixed-speed pump. A pump delivering 40 l/min suits a 36 – 50 litre tank. The small 2 and 3 litre tanks are for variable speed pumps and the AR200 controller, which only need a cushion for small draws.

Set the tank air pressure about 0.2 bar below the pump cut-in pressure, with the tank empty of water.

Booster system components

The 5-way connector joins the pump outlet, pressure tank, pressure switch, gauge and delivery line in one fitting. The FS03 float switch stops a pump when a tank is full or a sump is empty, rated 10 A at 220V with 5 m of cable and a counterweight.

Replacement bladders

Price guide

Prices include VAT and are correct at the time of writing.

Frequently asked questions

Related guides

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• Vega Pump Controllers
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• Vega Control Equipment & Accessories — shop the category