FILTER CONSTRUCTION AT THE PRESSURE RELIEF VALVE FOR A HYDRAULIC SPANNER

摘要

A filter mounted in front of the oil inlet hole of a pressure relief valve prevents contamination of the pressure relief valve. A pressure relief valve and filter assembly for a tensioner includes a pressure relief valve having a hollow pressure relief valve body defining a chamber, the pressure relief valve body having a first end having an opening, a second end, and a length extending from the first end to the second end; and a filter having a filter housing and a strainer connected to the filter housing. The strainer is positioned with respect to the orifice so as to prevent contaminants from entering the pressure relief valve through the orifice.