Assertion: valve's set | /r/HasProperty | separated by the lantern ring
Facets:
Source sentences:
text: 2 with the bottom scraper ring 59 with top and bottom washers, two sets of packing rings separated by the lantern ring 57 as a lubrication device, and topped off by the packing gland 60 with a bushing for receiving the valve stem within the packing gland.