Vacuum breaker valve for water

Description :

The automatic air inlet valve (adductor valve) allows entrance and emissions of large quantities of air during pipe emptying or depressions in water pipelines.

These vacuum relief valves shall be normally closed by means of a spring and open automatically only when the system pressure become negative, falling to approximately 0,02 bar below atmospheric pressure.

The immediate admission of air into the system valve shall be assured by having 10% more inflow area than the inlet area of the valve, preventing then from vacuum and limiting the vacuum pressure to the one calculated for the system. The double-sealing design (metal-metal and resilient) provides a “drop-tight” shut-off.

The air inlet valve incorporates a stainless steel screen and steel hood to avoid the entry of foreign particles.

Diameters / Flange connexions : DN50-DN500 

Range : PN10, PN16 et PN25

Material :

  • Body : Ductile Iron EN GJS-500-7
  • Seat: Elastomer NBR/EPDM of high durability
  • Upper protection: Steel with screen in stainless steel.
  • Bolting: Internal in stainless steel A2 / External in galvanized steel
  • Coating: Non-toxic epoxy for drinkable water. Internal and external 200 microns thickness

Other material and special coating available upon request

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Vacuum breaker valve

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9400_fonction_Fr_380x250

Strainer / Water strainer

Description :
Strainer for high performance results with vertical screen designed for maximum protection and prevent damages of control valves and water pipelines by means of the efficient removal and retention of solids, debris and other foreign material from flowing water. Either the construction materials and the general design of the Fig. 2012 strainer do obtain a final product very robust, durable and reliable.

Installation :
Its vertical opening allows easier installation in the network and is further facilitated with the use of lower clamps.

Diameters / Flange connexions  : 

DN50-DN350 / PN10-PN16-PN25

Available diameters, up to DN1000 Welded steel on request.

Range : PN10, PN16 et PN25

Material :

  • Body: Ductile iron GJS500-7
  • Cover: Carbon steel
  • Screen: Stainless steel A304
  • Bolting: Stainless steel A-2
  • COATING: Non-toxic epoxy for drinkable water. Internal and external 200 microns thickness.

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Strainer

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9400_fonction_Fr_380x250

Slow Closing Valve – Anti Slam – 2840 – Clean water

The slow closing valve is recommended to be installed at the air valve inlet during the filling.

The design prevents the valve from slamming when closed which can cause “water hammer” and the resultant noise and damage to piping systems.

If the liquid speed is above 3 mt per second, the water hammer and therefore the float against the seat can easily damage the valve. The same happens to deep well turbine pumps where the speed is too high and can easily exceed 3 mt. per second.

Connection : flange – DN80 to DN400

Range : PN10, PN16 et PN25

Materials :

  • Body: Ductile Iron EN GJS-500-7
  • Internal Mechanisms: Stainless steel and bronze
  • Seat: Elastomer NBR/EPDM of high durability
  • Coating: Non-toxic epoxy for drinkable water. Internal and External 200 microns thickness

Fill free to download the PDF file, the technical form and to contact us by clicking on icons.

Some other type of slow closing valve for clean, sea and processed crude water may reach your need, feel free to contact us. 

2840

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Test pressure
BODY
SEAT
PN1015 barg11 barg
PN1624 barg18 barg
PN2538 barg28 barg

2840_coupe

Operation

Some other type of slow closing valve for clean, sea and processed crude water may reach your need, feel free to contact us.

Combination Air Valve for Wastewater – 9420

La Combination Air Valve for Wastewater (trifunction) type 9420 compact is specially designed for wastewater.

It automatically performs the following three functions:

  1. Evacuation of large quantities of air during the filling. The kinetic air/vacuum valves are specially designed so that the flow of air in evacuations reaches high velocity ( speed of sound) without the Buoy ascending for the effect of the current and stopping any premature closings until the evacuation is complete.
  2. Purge of air during operation
  3. Admission of large quantities of air during the emptying and draining.

Closes watertight from 0.1 bar

Connexions : threaded or flanges (cf. table)

Range : PN10 or PN16

Material :

  • Body and Cover: Ductile Iron EN GJS-500-7
  • Float ball and Internal Mechanisms: Stainless steel A316
  • Coating: Non-toxic Epoxy for drinkable water. Internal and external 200 microns thickness

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9420 for waster water

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9400_fonction_Fr_380x250

Operation

Other material/connexions and special coating available upon request

Bifunctionnal Air-Vacuum Valve – 9300

The Bifunctional Air Vacuum Valve type 9300 is a automatic bi-functional valve for clean water and full bore with only one body being the entry and the exit equal to the DN specifications.

The valve should perform the following functions.

  1. Evacuation of large quantities of air during the filling.The kinetic air/vacuum valves are specially designed so that the flow of air in evacuations reaches high velocity ( speed of sound) without the Buoy ascending for the effect of the current and stopping any premature closings until the evacuation is complete.
  2. Admission of large quantities of air during the emptying and draining.

Closes watertight from 1 bar

Connexions : threaded or flanges (cf. table)

Range : PN10, PN16 and PN25

Materials :

  • Body and Cover: Ductile Iron EN GJS-500-7
  • Float ball and Internal Mechanisms: Stainless Steel A304 (optional A316)
  • Coating: Non-toxic Epoxy for drinkable water. Internal and external 200 microns thickness

Fill free to download the pdf file and to contact us by clicking on icons.

Several models exist (threaded, flanged, with different floater …) for clean water, sea water, waste water, etc., do not hesitate to contact us to discuss your needs.

9300

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Test pressure
Body
Seat
PN1015 barg11 barg
PN1624 barg18 barg
PN2538 barg28 barg

DN
1"
25
2"
DN50
DN60/65
DN80
DN100
DN150
DN200
DN250
DN300
DN350
DN400
ConnectionBSPFlangeBSPFlangeFlangeFlangeFlangeFlange

9300_fonction_Fr_400x230

Operation

Several models exist (threaded, flanged, with different floater …) for clean water, sea water, waste water, etc., do not hesitate to contact us to discuss your needs.

Monoblock Combination Air Valve – 9400

Combination Air Valve for Wastewater (trifunction) type 9400 compact is specially designed for clean water.

It automatically performs the following three functions:

  1. Evacuation of large quantities of air during the filling. The kinetic air/vacuum valves are specially designed so that the flow of air in evacuations reaches high velocity ( speed of sound) without the Buoy ascending for the effect of the current and stopping any premature closings until the evacuation is complete.
  2. Purge of air during operation
  3. Admission of large quantities of air during the emptying and draining.

Closes watertight from 0.1 bar

Connexions : threaded or flanges (cf. table)

DN : 25 to 300

Range : PN10 or PN16

Material :

  • Body and Cover: Ductile Iron EN GJS-500-7
  • Float ball and Internal Mechanisms: Stainless steel A316
  • Coating: Non-toxic Epoxy for drinkable water. Internal and external 200 microns thickness

Fill free to download the pdf file and to contact us by clicking on icons.

9420 for waster water

9400 with flange

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9400_fonction_Fr_380x250

Operation

Other material/connexions and special coating available upon request