Greenback Spider

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Increase your pasture production by capitalizing on your farms available resources with the Williams Greenback Spider Travelling Irrigator. A simple speed change procedure with a choice of five travel speeds allows greater control of effluent application depths (minimum of 5mm) thus allowing greater control of soil absorption rates optimizing the benefits of the natural fertilizer.

5mm application depth Distribution uniformity of less than 1.25
5 travel speeds Suitable for electric and PTO pumps
Even spread with new arm design Travel distance up to 400 metres
Maximum volume of 90 cubic metres per hour Drags up to 90mm alkathene
Available with multi strand galvanised, stainless steel or nylon winch rope 250m, 300m or 400m of 5mm wire rope
Suits 15hp - 30hp High Pressure Pumps & PTO Pumps
Travel Distance: 250 - 400m
Minimum Pressure: 2 bar
Spreading Width: 30 - 50m
Maximum Pressure: 6 bar
Boom Width: 9m
Max. Draghose: 90 od

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.