High strength is provided by the help of the dual-shaped body. Safe and easy ear connection is enabled by the radial combi and hexagonal connection nuts. Plastic slug is used for the nuts not to fall off during the transportation and assembly. 8-12 microns zinc is galvanized against rust. By the EPDM caoutchouc izolation rubber ; noise reduction uptill 15 Db due to DIN 4109, assimilation of vibration and partial aspiration against the thermal expansions in the system are provided.