Installation of a conical strainer can be done in one of two different ways, cone facing upstream or cone facing downstream.

When cone is downstream, debris collects inside of the cone near the tip and cone may rip apart due to heavy strain on the tip.

Advantage of cone downstream side is easier removal of debris. But mechanical strength of cone shall be ensured.

When cone is upstream, debris collects to the side of the strainer. Its advantage is that any plugging of the strainer will start in the outside and work its way in.