Walla Walla MP Corner Series Rotators The MP Rotator is a revolutionary sprinkler setting a new standard for water efficiency in the turf & landscape industry. It is a multi-stream rotor the size of a spray nozzle. It fits into any conventional spray head body or shrub adapter, transforming it into a high uniformity, low application rate sprinkler with matched precipitation even after arc and radius adjustment. The MP Corner Series is designed for tight corners which are difficult to irrigate properly with conventional sprinklers. It features an adjustable arc from 45° to 105°, maintains MPR at any arc or radius and can be placed on the same zone with any other MP Rotator model.