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Rotary Valve Suppliers

Rotary valves are used to allow product to flow from a hopper under a filter or cyclone for example, into a pressure environment which is different than that of the main hopper such as blow line.

The valve selection is dependent on a number of factors including pressure variations:

Low Pressure:

The Vortex RA series valves have circular inlet and outlet flanges and an open ended flexible or hard tipped rotor. These valves are fabricated from laser cut parts to provide a reliable light duty valve. They are typically used when the material flow is low and the pressure differential between the inlet and the outlet of the rotary valve is less than 3kPa.

Medium Pressure:

The RB series valves are fabricated from laser cut parts to provide a reliable medium duty valve. They have rectangular inlet and outlet flanges and are available with flexible or rigid rotor tips. They are typically used when the material flow is higher and the pressure differential between the inlet and the outlet of the rotary valve is less than 7kPa.

High Pressure:

The Vortex RF Rotary Valves are specifically designed for feeding material into high pressure blow lines.

They are typically used when the material flow is high and the pressure differential between the inlet and the outlet of the rotary valve is less than 60kPa.

The RF valve range has a swept volume from 0.020m³/rev up to 0.30m³/rev. Vortex RF Rotary Valves consist of a heavy duty match machined rotor and barrel. The rotor tips are hardened and machined to ensure close tolerance, thus reducing leakage and wear. The barrel is heat stabilised to maintain the machined tolerance.

Options and Benefits:

  • HARD CHROMED BORE – Giving longer service life.
  • REPLACEABLE ROTOR TIPS – Easily adjustable to maintain the airlock
  • ADJUSTABLE END PLATE SEALS- Allows accurate setting of end clearance
  • SHEAR KNIVES – Adjustable knives, mounted horizontally into the side of the valve to shear product off the rotor blade tips.
  • QUICK CHANGE KNIVES – A spare blade can be supplied complete with a setting jig. The jig allows the blade to be sharpened and set up outside the valve, ready for quick changeover, thus reducing downtime and allowing more frequent change outs to maintain valve performance.
  • SHAFT MOUNTED GEARBOX – to avoid excessive bending movements in the shaft
  • VSD PROTECTION – The valves come with a Variable speed drive to ensure no overload situation can damage the valve.
  • AUTO CLEAR FUNCTION – The VSD has a built in program, to reverse the valve in the event of a blockage. If the blockage cannot be cleared successfully the valve shuts down. An alarm output notifies the operators.
  • VENTED RETURN SIDE – Important for very light fluffy products

Vortex are the premier rotary valve suppliers in New Zealand.You’ll find us throughout the country, including Auckland, Christchurch, Wellington and Dunedin.