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Rallonge_inox_robinet_flotteur
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Rallonge_inox_robinet_flotteur
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EQUIPMENTS FOR RESERVOIRS

Float valve - Top of water tank

Product family
Pipeline protection

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 top.

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 top of a water tank (with an extension in stainless steel).

The stainless steel extension is systematically supplied up to and including DN200.

Technical design

Schema_avec_rallonge_inox_robinet_flotteur
50-65 1530 125 480 800 Ø 470 x 210 25 162918
80 1530 116 580 900 Ø 470 x 210 30 162921
100 1530 116 580 900 Ø 470 x 210 35 162923
125 1530 116 5800 900 Ø 470 x 210 50 162913
150 1810 168 760 1080 Ø 470 x 210 60 162924
200 2140 215 910 1230 Ø 470 x 320 70 162914
250 2280 250 950 1230 Ø 470 x 320 85 162925
300 2850 290 1050 1370 Ø 470 x 320 97 162926

Features

Material and coating

Item Designation Material Coating
1 Body and cap DN60/65 Steel type AE 250 Epoxy powder mini thickness 200 microns
Body and cap DN80 à 300 Ductile iron GS
2 Piston and jacket PVC  
3 Spindle Steel type Z6 CN 18.09  
4 Check valve Steel type Xc 38 Epoxy powder mini thickness 200 microns
5 Check valve joint SBR alimentary  
6 Lever Steel type Xc 38 Epoxy powder mini thickness 200 microns
7 Immersed body Stainless steel type 304  
8 Piston joint Nitrile  
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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:

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

Span 25% 50% 75% 100%
98 32 16 12

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.

Documents