Safety (PRV) Valve BAYARD 6 Inch PN 16

Surge Anticipating Valve K 1 40

  • Booster & deep well, single & variable speed
  • Eliminates surge in all distribution networks


The surge – anticipating valve is designed to protect pumping stations against surges caused by pump stops on power failure, as well as overpressures during normal running of the pumps.


Valve is hydraulically operated, diaphragm operated and do not rely on any power supply installaed in deryvation of the discharge pipe and evacuates to atmosphere or pump inlet.


The pressure is measured via a sensing line. When the pressure drop due to the sudden pumps stop is measured, the Surge Antici-pating Valve starts to open, in order to dissipate the returning high pressure wave and discharging the excessive pressure (surge). This anticipation process allows an immediate elimination of the returning surge.


The valve is installed in derivation (off-line) valve opens quickly on low pressure wave due to pump stop, and remains open until return of high pressure wave which is diverted to atsmphere.

Close slowly without causing secondary surges.

  • DN 65 to DN 400
  • Flanges : 150 PN 16 ; 150 PN 25
  • Pressure setting on pilot :
    – 1 – 20 bars standard range
    – 0.2 – 2 bars on request

Simplified version for high rise building DN 65 to DN 200 available on request

NB :
The installatio of a surge anticipating valve do not remplace the installation of a surge vessel for vacuum protection.
BAYARD is not liable for water hammer calculation and sizing of the valves.

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