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Internal Tank Valve | TriDart

Supplier: Dual Valves Australasia

The self contained TriDart tank valve has the distinct advantage of being pre-assembled and calibrated prior to shipment. This valve is recommended for tank depths up to 3 meters.

Price Guide: POA

The TriDart internal tank valve comes in a range of sizes and options customisable to suit your specific application

TriDart valve fits into position, bolts down and has the distinct advantage of being pre-assembled and calibrated prior to shipment to site. 


  • Ideal for tanks up to 2–3 metres deep
  • Smart splitter boxes
  • Feed distribution boxes
  • Small flotation machines
  • Conditioner tanks

Common issues overcome using the TriDart internal tank valve include:

  • Poor level control or spillage
  • Difficult to access seats
  • Excessive wear
  • Misalignment of valve and actuator shaft
  • Bouncing or vibration of valves, poor coupling
  • Maintenance problems

TriDart internal tank valve Key Features:

  • Self-contained, “drop in“ style
  • Control or On/Off applications
  • Customisable design
  • Full head guiding
  • Anti-Rotation device
  • Stroke indication
  • Large Actuators to provide improve control and stability.
  • Mechanical linkages are designed to provide accurate linear response and may be replaced
  • Finger Guards for Increased Saftey to enclose all moving parts
  • Seat Cage Plug Seat: Reduce troubles of slurry filled and sticky shafts guide blocks.
  • Conical plug has a linear flow characteristic while the concave plug shape is quick opening: the linear flow characteristic is better for the control system.
  • Complete valve can be factory or workshop calibrated before commissioning, the valve can be removed/inserted from/in the process during operations.

Standard Sizes

  • 80 mm (CVmax 176) to 600 mm (CVmax 6,950)

Material of Construction

  • Mild Steel bodywork
  • Poly urethane and mounting bars
  • Internal components made from wear resistant polyurethane (PU) protected, wetted parts including seat,plug and valve guides
  • Shaft either stainless steel or PU protected


  • Supplied with or without an actuator
  • Bias Spring Fail Closed, Fail Fixed or Double Acting

Actuator Options

  • Smart (HART, Profibus), Electro-Pneumatic (4-20mA),Pneumatic (20-100kPa) Positioner
  • Safety Guards enclosing feedback mechanism


  • The pedestal can supplied with a bellows for pressurised applications. The very large external valve product is essentially a sub-vessel with a number of sealed TriDarts.

For more information or a qoute on the Tank Valve | TriDart please call or email for a direct reply.