... -off valve,discharge shut-off valve,intergrated check valve,intergrated safety relief valve, connection for oil injection ,Capacity control: ... 4 steps capacity control(100-75-50-min%) or stepless(100-25%),motot with 6 PTC temperature sensors embedded, ... cartridge type filter,flow-switch,sight glass,electronic control module INT69 VS and electrolytic condenser SW series refrigeration ...