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(AKA corner valve AKA right angle valve)
the valve turns a corner.
how to open/close
best learning will be practice: ask someone to guide you in opening and closing these valves at least once.
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open is closed, in is out. makes perfect sense.
vent valve
used to vent/purge gas into the chamber
metal seal rubber seal
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more niche valves
pressure release valve (PRV)
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