This Standard Practice covers the construction requirements for high pressure, lug- and wafer-type, iron and ductile iron knife gate valves.
This Standard Practice covers flanged body designs compatible with ASME B16.1, Class 125 flanges for sizes NPS 2 (DN 50) through NPS 60 (DN 1500), ASME B16.1 Class 250 flanges for sizes NPS 2 (DN 50) through NPS 48 (DN 1200), and ASME B16.42 Class 150 and 300 flanges for sizes NPS 2 (DN 50) through NPS 24 (DN 600).