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 The other day we worked at a local butcher shop. We replaced the drain line that included an air gap under a three compartment sink.

Before
https://image.nostr.build/8349fcf6956237b8168775562fce2fbb08791e7322181fc8fc2e8bf966610079.jpg

After
https://image.nostr.build/a08cec9ebc1d7aceebe983814d0ffba371f152b857bcb38668bb23f8880ded08.jpg
#Plumbing 
 More of these Notes please
nostr:nevent1qqsww5h0us4690csypae2hgujn66746qfuj9085asaxj7kd5ektlqzcpz4mhxue69uhhyetvv9ujuerpd46hxtnfduhsygrvw2sucl2svqugdl5udfe8fmlxt7phtkj5x9dazjnqx88fxg0gyypsgqqqqqqs29fg8l 
 Unions for serviceability, Great work! 
 Exactly! 💯  
 nice~!
why the air gap..? 
 Health code. If the drain line backs up, the air gap prevents the dirty water from backing up into the sink where food is prepared. It spills out onto the floor instead, preventing contamination. 
 oooh
that makes sense.
now that i think about it the few commercial kitchens i've been in had the sinks drain into a floor drain.
thanks~! ^^