Typically low loss headers is used in installations with several heating circuits (for example convection heaters and underfloor heating) with different requirements, and each of them has a separate pump. In modern appliances, various heat sources are increasingly used, such as an automatic pellet boiler, a gas boiler or a heat pump,  and etc. If low loss header intaled each system can work independently and the pumps do not interfere with each other.

Hydraulic low loss headers are a very simple  device, but they play an extremely important role in heating systems. It is an enclosed space, usually made of steel, to which the primary circuit (s) of heat are welded on one side and the secondary circuits (installation side) on the other. The primary side supplies heat to the header and the secondary side to the receiver. Hydraulic low loss headers Kamen SH 1-1 is available in insulated and non-insulated versions: