This stainless steel Top Hat Strainer Assembly is placed before your trigger valve and filters out foreign material that could clog or damage your trigger valve. A must for every wand. See Exploded View of The Ultimate Soft Touch Trigger Valve for more info.
We highly recommend a little JB-Weld be used in addition to PTFE tape when installing this item to insure a good seal.
Consider purchasing additional Strainers (without the whole assembly) for quick swap outs when on the job.