MX Plus Porportioner , 6-Product 2 Bucket Fill, Dial - 4 Bottle Aire-Gap 7866605-A 

The industry's most flexible and field serviceable dispensers. Available in an assortment of
configurations centered around one, two, and three engine cabinet designs. The cover simply pops off with
a good tug. All of the components can be removed and switched around with a quarter turn. The large
buttons are easy to operate and can be locked into the on position by engaging a catch. Knight's flow
regulator technology is built-in to guarantee accurate dilutions in a wide variety of water conditions.

7866605-A Aire Gap