1Oem Number: Heavy equipment pressure switch replacement part number is I R 23474653 A, 23474653 for reference, please double check before purchasing. 2Adjustable Unloader: Pressure range is at 140 to 175 in factory preset, with adjustable unloader, which can be rotated in multiple directions. 34 Port: Pressure Switch adopted 4 port connection type, for better connection, avoid the overload operation, prevent damage to operation system. 4Function: Pressure switch plays the role of detection, display, alarm, and can also control the signal output well, so that the machine can operate normally. 5Metal Materials: Pressure switch replacement is exquisitely made from metal with high performance and durability, is also made in high accurate.