PRESSURE RELIEF VALVE FOR AN OIL STORAGE TANK CAPABLE OF CONTROLLING THE INTERNAL VAPOR PRESSURE OF AN OIL STORAGE TANK

摘要

PURPOSE: A pressure relief valve for an oil storage tank is provided to reduce manufacturing costs by simplifying vapor discharging and external air suction structures.;CONSTITUTION: A pressure relief valve(100) for an oil storage tank comprises an outer case(10), an inner case(20), a valve body(30), a cap(40), a lower support pipe(50), and a connector(60). A protrusion(11) is formed in the inner edge of the bottom end of the outer case. A rim(21) is protruded from the outer surface of the bottom end of the inner case. The valve body is vertically moved inside the inner case. The cap is located at the top of the outer case. A coupling flange(51) of the lower support pipe is coupled to the bottom of the outer case. The connector is coupled to the lower support pipe.;COPYRIGHT KIPO 2012