Thread: lock open or tag open
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Old 09-11-2007, 10:02 AM   #1
MINGA
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Default lock open or tag open
Where practicable, lock open or tag open to atmosphere, a drain valve between the two closed valves.

no estoy segura si esto significa abrir y etiquetar por fuera una válvula de drenaje...

Muchas gracias
Minga
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