This standard covers design, materials, face-to-face dimensions; pressure-temperature ratings; and examination, inspection, and test requirements for gray iron, ductile iron, bronze, steel, nickel-base alloy, or special alloy butterfly valves that provide tight shutoff in the closed position and are suitable for flow regulation.
API Std 609:2004 History
API Std 609
$58.00 $117.00
API Std 609:2016
$64.00 $129.00
API Std 609:2009
$70.00 $140.00
API Std 609:2004
$72.00 $144.00
API 609:1997
$72.00 $144.00
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$34.00 $69.00
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$70.00 $140.00
API RP 751:2007
$70.00 $140.00
API TR 6AF2:2008
$72.00 $144.00