Welding Y-shaped filter is an indispensable filtering device in pipeline systems for conveying media. It is usually installed at the inlet end of pressure reducing valves, relief valves, constant water level valves, or other equipment to remove particle impurities in the medium and protect the normal use of valves and equipment. Suitable for media such as water, steam, oil, etc., with a usage temperature generally between 0-300 * C. (Note: The specific usage temperature is based on the design temperature of the filter.) The welded Y-shaped filter mainly consists of: main body, filter screen, middle cover plate, middle plug, middle tight round part, etc. The design and manufacturing standards for this filter refer to GB/T 14382-2008 and SH/T3411-2008、2017.