Firstly, you must ensure that the strainer is facing downwards and, secondly, that it is installed in the correct direction. This is the only way to ensure that a Y strainer can function optimally in a heating system, steam system, drinking water system or other applications. The direction in which the medium should flow can be easily identified by the arrow prominently placed on the outside of the housing. Apart from horizontal alignment on the pipe, some products can also be installed vertically in the system. However, this is usually only possible in cases where the flow is downwards. So before you buy your strainer, check the enclosed data sheet. Here you will find all the technical details. Fergo provides practical 3D models for download so that you are well prepared.