Dual Slurry Air Release Valve (Dsarv)

DUAL’s AirVacuum Release and Vacuum Breaker’s function is to automatically exhaust large volumes of air from the system when it is beingfilled and also to allow air to re-enter the pipe line when being emptied.The orifice size is generally the same size as the valve inlet and outlet.

In operation,when the system If filled,the fluld lifts the ball until it closes the orifice.The orifice will remain closed until the system is emptied. Air may enter the valve and displace the fluid while the system is in operation, however, internal pressure will continue to hold the valve closed.The valve will not re-open until the system pressure drops to near atmospheric pressure and the ball is no longer buoyant.


  • No blocking or leakage.
  • No sticking due to rotating ball.
  • Natural rubber secondary seal for positive seal.
  • Fabricated and can be repaired in line.
  • Self cleaning ball action.
  • Cast body or fabricated.



All images, pictures and graphics on this website are used courtesy of Dual Products, RDC Controls and MonkeyDS (web administrator) and all rights and ownership remain with them.


Fabian Aedo

Sales Manager

Fabian Aedo

Sales Manager


Alex Schafer


Fabian Aedo

Sales Manager

Trinova Team

Fabian Aedo

Sales Manager

Douglas Simpson

Water Specialist / Sales and Technical Expert

Abraham Estrada

Country Manager

Fabian Aedo

Sales Manager


Diana Munera

Hub Manager


Ing. Francisco Vega

Commercial manager UNE

Gustavo Ramírez

Dante Zolezzi

Commercial manager

Fabian Aedo

Sales Manager


KC Momayez

Sales Asociate

Tom Inman

Chase Arnett


Bonner Alexander

Fabian Aedo

Sales Manager