🔍 Key Concepts

• Review how a self-cleaning centrifugal purifier uses operating water to open and close the bowl. • Study the flow paths for opening water and closing water in the lower part of the bowl/operating slide area. • Note the physical location of port H relative to the operating slide, sludge space, and discharge outlets.

💭 Think About

• Look at where port H is drilled into the casing: does it connect to the sludge space, the operating-water chamber under the slide, or the oil/water interface zone? • Ask yourself what must be periodically removed or relieved in order for the operating slide to move freely and for the bowl to open/close properly. • Consider whether the port is designed to carry away solids, liquids, or to control a level/interface inside the bowl during normal running.

✅ Before You Answer

• Verify whether port H is in direct contact with the sludge space or with a water chamber beneath the slide. • Check if any other line appears dedicated to oil interface control; compare its location with port H. • Confirm whether the function involves opening-water discharge or closing-water discharge by tracing which volume of water is trapped or released when the slide operates.