Keckley Style A-7, cast iron, 125# y-strainer for steam, water, oil, or gas where protection from foreign matter in a pipeline is required. This Keckley Style A-7 y-strainer features drilled flanges in 5" and a perforated 304 stainless steel screen. All Keckley screens are spot welded for maximum strength. The Keckley Style A-7 strainer features a machined groove in both the body and cover for proper screen alignment and to ensure accurate reseating when servicing is required. The gasket is a synthetic fiber that is compressed between the body and cover for maximum strength and durability. Self-cleaning is accomplished by opening the valve or drain plug connected to the blow-off port.