Abstract: A Y-strainer operable to strain debris and/or particles from a fluid in a flowing system is disclosed. The Y-strainer includes a body, a nut, a retainer, a strainer, and a retainer seal positioned about the retainer. The body includes an inlet port, an outlet port, a central portion, and a barrel leg. The nut is removably fastened to the barrel leg, while the retainer is coupled to the nut and positioned within the barrel leg. The strainer is engaged with the retainer and positioned within the barrel leg. The barrel leg interconnects with the central portion at an angle, which can be an acute angle. The retainer, nut, strainer, and retainer seal can form a strainer insert subassembly that is removable from the barrel leg as a single unit. A method of assembling the foregoing Y-strainer is also provided.