Kpsäiliöt Other models

With a kerb weight of 7,500 kg and a length of 10.30 m, the trailer leaves a payload of 28,500 kg, close to four fifths of its gross weight. Such a low share of kerb weight in the total is typical of tank semi-trailers, since the tank shell itself carries load and largely removes the need for a separate heavy chassis. Its width of 2.50 m matches the standard width permitted on European roads.

O4-class vehicles require an air brake system and are towed only behind tractor units driven under a category CE licence. Tank semi-trailers carry additional rules for the cargo they hold, such as baffle plates limiting liquid surge on bends and vent and discharge valves matched to the substance being carried.

When buying a used tank semi-trailer, the priorities are the condition of the internal lining, the tightness of discharge valves and manhole covers, and corrosion around the tank's mounting points. It is also worth checking the air lines and brake chambers, the condition of the axles and suspension, and the landing legs and fifth-wheel connection points, which see heavy wear from daily coupling and manoeuvring.