The purpose of a header tank is to allow for the steering gear fluid to expand and contract due to temperature variations. The header tank can be used on a manualfilled system as well as on an auto-filled
system. The capacity of this tank is one quart (one litre). It is available with or without sight glass and breather. It is recommended to have this tank installed above the highest helm pump onboard ship.
In addition, a manual-filled system should be installed with a breather or an auto-filled system should be sealed with a vent line going from the header to the main tank. The KOBELT expansion tank is die cast
in bronze and is very durable in the marine environment.
