The SSF28 Float Switch series is a vertically mounted device designed to achieve reliable switching at higher pressures. Mounting is in the top or bottom of the tank from the inside, so requires access to the inside of the tank. This type is capable of working at pressures of up to 40 bar. They are manufactured in 316 grade Stainless Steel and will work in liquids of SG 0.7 minimum. The switch action may be reversed by removing the float, inverting it and then refitting it to the stem.