Key Product Features

Provides the most reliable
flow measurement in m3/h
Unique patented design:
Flowmeter + non return valve
Installs quickly and easily with
no calibration required

What is FlowVis®?

FlowVis® is the most advanced, affordable, and reliable flowmeter designed specifically for pools, spas, fountains, and water features. Ingenious in concept and flawless in operation, FlowVis®is a revolution in reliable flow measurement. FlowVis® allows you to set your pump’s speeds correctly to optimize filtration performance, backwash water consumption and guarantee maximal energy savings.

Unique Benefits

  • Maintains accuracy even with air in the system.
  • Will not stick, bounce, or provide inaccurate readings of flow.
  • Can be installed right next to other fittings with 0 effect on accuracy.
  • Can be installed horizontally, vertically or even upside-down!
  • Incredibly robust, and designed with 15+ year lifespan.

FlowVis®Technical Data

Item No.


Pipe Size (DN)

Pipe diameter (mm)

Flow range (m3/h)


FlowVis flow meter + NRV

DN 40

d 50

2,4 - 21,6


FlowVis flow meter + NRV

DN 50

d 63

2,4 - 24,0


FlowVis flow meter

DN 65 (High Flow)

d 75

7,0 - 43,0


FlowVis flow meter

DN 80

d 90

20,0 - 50,0


FlowVis flow meter

DN 100

d 110

34,0 - 64,0

On our new download section

Contact us

Dryden Aqua Ltd
Production, Research & Development
Butlerfield Ind. Est Bonnyrigg
EH19 3JQ
United Kingdom
Mail: info@drydenaqua.com
Phone: +44 1875 822222