GB Magnum

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NZ Patent #603925

The Williams GB Magnum Travelling Raingun Irrigator is the first of its kind. The patented design combines the performance of a static raingun with the reliability of our Greenback travelling irrigator to create an irrigator that we believe surpasses all competing forms of effluent irrigation equipment. With a wetted width more than twice as wide as a traditional travelling irrigator, offering application rates and depths competitive with sprinkler systems, the Magnum is the obvious answer to your MooPoo problem.

Case Study: GT01
Proven simple design Wetted widths from 45m - 90m
Sime Synkro effluent raingun 5 travel speeds
Application depths of 3mm - 25mm and rates below 10mm per hour Unique gland sealing system using double lipped neoprene seals
Designed to suit flowrates from 5ltr/sec - 14ltr/sec (18 m3 - 45 m3) 5mm galvanised, stainless steel or nylon wire rope with lengths of 250, 300 and 400m
Travel Distance: 250 - 400m Minimum Pressure: 200 kpa
Wetting Width: 45 - 90m Maximum Pressure: 600 kpa
Boom Width: 8.5m Minimum Flow: 17, 640 m3/hr
Max. Draghose: 90 od Maximum Flow: 51, 360 m3/hr

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.