FILTER APPARATUS

PROBLEM TO BE SOLVED: To enable an efficient operation of a plant by discharging automatically air pooled in a casing of a filter apparatus connected to a discharge side of a gas pump in operation. SOLUTION: The filter apparatus includes the casing, a pressured oil inlet port provided in the casing and connected to the discharge side of the gas pump, a cylindrical filter element arranged in the casing and allowing the passage of the pressured oil supplied from the pressured oil inlet port from the outer periphery to the inner periphery to filter, an outlet port discharging the pressured oil introduced into the inner periphery of the filter element from the inside of the casing, air vent piping connecting the upper part of the casing and the outlet port, and a flow control means provided upstream of the connection of the air vent piping in the outlet port. COPYRIGHT: (C)2010,JPO&INPIT