Gloxco suction strainers are used on the suction end of a suction hose to help prevent debris from being sucked into your pump. It is a critical component as it can help prevent your suction pump from being damaged or clogged. Gloxco suction strainers are used on the suction end of a suction hose to help prevent debris from being sucked into your pump. It is a critical component as it can help prevent your suction pump from being damaged or clogged. Suction Strainers The suction strainer is used on the suction end of a suction hose to help prevent debris from being sucked into your pump. It is a critical component as it can help prevent your suction pump from being damaged or clogged. The suction strainer has a female NPSH thread and will connect to a male NPT, NPS or NPSH nipple on your suction hose. NPSH stands for National Pipe Straight Hose and is sometimes called NPS (National Pipe Straight). NPT stands for National Pipe Tapered. These suction strainers are compatible with all National Pipe standards: NPT or NPSH or NPS. Round Hole Strainer Square Hole Strainer Round Hole Strainer Poly Strainer Buying Options Buying Options Buying Options Buying Options Customer Reviews 4.5 out of 5 stars 49 5.0 out of 5 stars 2 5.0 out of 5 stars 10 3.7 out of 5 stars 5 Material Zinc Plated Steel Zinc Plated Steel Stainless Steel Polypropylene Connection Type Female NPSH Female NPSH Female NPSH Female NPSH Size Range 1-1/2" to 12" 1-1/2" to 8" 1-1/2" to 6" 1-1/2", 2", 3" Long Style Strainer Top Hole Skimmer Strainer Bottom Hole Skimmer Strainer Funnel Strainer Buying Options Buying Options Buying Options Buying Options Customer Reviews 5.0 out of 5 stars 6 4.7 out of 5 stars 13 3.9 out of 5 stars 15 3.3 out of 5 stars 3 Material Zinc Plated Steel Zinc Plated Steel Zinc Plated Steel Stainless Steel Connection Type Female NPSH Female NPSH Female NPSH Female NPSH Size Range 1" to 8" 1-1/2", 2", 3" 1-1/2", 2", 3" 2", 3", 4" Strainer Connection Gloxco Suction strainers are meant to be attached to the submersed end of a suction hose and is used to keep debris from entering your suction hose and pump.