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Purolator high pressure filters are designed and tested to withstand pressures up to 6,000 psi (414 bar) and flow rates up to 150 gpm. Temperature range: -65°F to 300°F. Options include port and drain thread sizes and differential pressure indicators and electrical switches. Filter elements are available in Microfil® III media (1, 3, 6, 12, 20 and 25 microns absolute), and Micropleat® media (5, 10, 20, and 40 microns nominal).

500 Series: "L" type filter assembly. Conforms to AIAG standards for HF3 hydraulic filters. 6,000 psi (414 bar) rated operating pressure. Rated flow, 150 gpm. Made from ductile iron head castings and forged steel bowls.

520 Series: "T" type filter assembly. Conforms to AIAG standards for HF3 hydraulic filters. 6,000 psi (414 bar) rated operating pressure. Rated flow, 150 gpm. Made from ductile iron head castings and forged steel bowls.

550 Series: Conforms to AIAG standards for HF4 hydraulic filters. 5,000 psi (345 bar) rated operating pressure. Rated flow, 125 gpm. Made from ductile iron head castings and machined steel bowls.