Gasket remarks TG PG LG RF, what do they mean?
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For example, the gasket information given by the design institute is RF PN16 HG/T20606-2009 T=3.0mm, material RPTFE, and then note TG PG LG RF 1.6MPa, where 1.6MPa is the nominal pressure, TG is the tongue and groove surface, RF is the raised surface, and LG groove seal, what is PG? Ring interface?
Is it a typo? Should be PJ loose flange
The description of the gasket already states that it is RF, so the remarks should not explain the sealing form. It feels like the abbreviation of the medium or the abbreviation of the three meters of the instrument?
I feel like what was said on the third floor is similar. Is it a TG thermometer, a PG pressure gauge, a LG liquid level gauge, and gaskets for the instruments. You mean the installation location?
Note TG PG LG RF 1.6MPa, this paragraph should mean that the local thermometer (TG), the local pressure gauge (PG), the local liquid level gauge (LG), the flange connection surface is unified as the RF surface, and the pressure level is 1.6MPa
study* Got the knowledge from upstairs, thank you
The meaning of the design institute is that the matching flanges of the root valves of on-site thermometers, pressure gauges, and liquid level gauges are all raised-face flanges with a pressure level of 1.6MPa. The currently provided 3 mm thick PTFE gasket (pressure level is also 1.6MPa) can be used universally.
The explanation on the 7th floor is in place. Generally speaking, the general comprehensive materials, table and interior remarks, the owner does not even look at the installation or the maintenance section. The table ring connection surface is RJ.