The Spraying Systems A122-1/2-PP-100 is a strainer that is used to remove particulates from water in your car wash systems to protect your equipment and prevent spotting on customer vehicles. It features a 100 mesh screen to filter out particles. Equipped with 1/2 inch female NPT. The housing of the strainer is made with polypropylene. Self-cleaning design allows filtered liquid to pass through, while liquid particles are returned back to the liquid supply through a return outlet.