SEKO’s ProDual automotive spray and rinse system delivers shampoos, detergents and rinse-aid solutions for car, truck and other vehicle-washing applications (https://www.seko.com/product/produal).
As well as reducing wastage of water and chemicals, the system can be trolley mounted and includes high-grade hose and stainless-steel/PVC lance.
This video provides a step-by-step demonstration on how to install a SEKO ProDual system.