Nebula Foam, 2 liter manual pressure pump. Nebula Foam allows you to use 3 different nozzles depending on the use of the product and the foam you want to obtain. Nebula Foam retains the air much longer so that you can continue faster in long washing operations. Nebula Foam has a maximum load pressure of up to 3 Bar. Nebula Foam is a special foaming pressure pump for alkaline products and neutral shampoo.