Presentation

The float valve aims at keeping on a determined level the stretch of water in a water tank. It is set up on the supply pipe at the bottom.

It opens when the water tank goes down below the chosen level and closes progressively whenever the maximal level is reached.

Its essential properties are:

• its lightness,
• its dismantling easiness thanks to its simple construction,
• its maintenance easiness thanks to its low components number,
• functioning without vibrations nor water hammers.

There are float valves from DN60 to DN300 for a service pressure of 10 bars.

The float valve can be set up at the bottom of a water tank in immersed position.

Material and coating

Installation plan

Length of the delivered chain: 5 meters to adjust when setting up.

Hydraulic characteristics

Headloss expression by Kα

The headloss ΔH of a valve, the flowing speed of a fluid and the headloss coefficient K in the valve are tied by the following formula:

∆H = Kα × V² 2g

with ΔH = headloss in mCE, V = fluid speed in m/s, g = gravitational acceleration in m/s², Kα = headloss coefficient without dimension

Marking

There’s a unique marking on the valve’s body (description).

This description mentions:

• nominal diameter for entrance,
• service pressure,
• drilling template for flanges,
• serial number,
• manufacturing date.