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 609:1997 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
More Standards PDF
API Spec 12K
$64.00 $128.00
API RP 2I (R2020)
$82.00 $165.00
API MPMS Chapter 4.7
$48.00 $97.00
API Spec 6FC
$70.00 $140.00