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PIPING MATERIAL SPECIFICATION (PMS)
Plug Valves : API 6D 12.8 All manual operated valves shall be provided with wrench I hand wheel or gear operator as specified here in below. 12.8.1 Gate Valves For ANSI class 150 and 300 : Hand wheel operated for size ≤12” NB. Gear operated for size ≥14” NB. For ANSI class 600 : Hand wheel operated for size ≤ 10” NB. Gear operated ...
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