Vertical Stirrer

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The Yardmaster Vertical Stirrer is ideal for small tanks, sumps or ponds and can be mounted on floating frames as part of your effluent system.

With a developing need to keep a good solid / liquid mix, the Yardmaster range of stirrers have become a key element of many effluent systems
Using a 4-pole motor, the Yardmaster stirrer runs through a reduction gearbox to do approximately 100rpm at the propeller
Available in 3 motor options, there is a stirrer to suit most applications
Mounting the stirrer can be done in various ways. Where your pontoon provides sufficient buoyancy and size, it can be fitted on a single pontoon with your pump
Alternatively you can have a separate pontoon for a pump and stirrer. Your stirrer can also be frame mounted, with longer shaft stirrers available for this purpose
Designed and manufactured in New Zealand for New Zealand conditions

Technical Support

It is of vital importance that the support provided for Williams Engineering products is of the same quality and professionalism as that of their manufactured products. Technical support is available through our nationwide dealer network or contact Williams Engineering direct.


Williams Engineering warrants new products sold by it to be free from defects in material and workmanship for a period of twelve months after delivery to the initial user. This warranty is for the replacement or repair of any part found to be defective during the warranty period. This warranty excludes any transport costs incurred by Williams Engineering in giving effect to the warranty and specifically excludes all normal maintenance costs. Replacement parts provided under the terms of this warranty are covered for the remainder of the warranty period applicable to the product in which they are installed as if such parts were original components of that product.

Warranty only applies if the form at the rear of the product manual is completed and returned.