For use in water, oil and gas piping to provide economical protection for pumps, meters, valves, compressors, traps and similar equipment;Standard screens for Y-Strainer are perforated 304 Stainless Steel with spot welded seam. Mesh lining is available in all alloys for extra fine straining. Recommended standard perforations are listed below in the material specifications;Furnished as standard in sizes 8" (43 mm) and larger. A one-quarter turn securely locks the screen in its seat and frees the serviceman for securing the cover flange to the body of the strainer. Contact an Anvil Representative for other applications;All covers have an NPT blowoff outlet at location “C”. A recessed seat in the cover ensures accurate screen alignment. Bosses at the inlet and outlet flanges are provided for gauge taps;Self-cleaning is done by opening the valve or plug connected to the blowoff outlet;Tapped NPT size specified in the dimension table. Blowoff outlets are not normally furnished with plugs