Choosing a flanged ball valve
Match the valve to the flange standard and pressure class of the pipework first. PN16 and PN40 (EN 1092-1) are the norm in the UK and Europe; ANSI Class 150 and 300 (ASME B16.5) are used on oil, gas and US-designed plant. They are not interchangeable, so check the drilling before ordering. Our guide to PN16, PN40 and ANSI 150 ball valves explains the differences.
Stainless steel: PN16, PN40, ANSI 150, ANSI 300 and 3-way PN16/PN40. Other materials: ductile iron (PN6 to PN40, ANSI 150 and Table E), flanged brass and the compact wafer pattern stainless ball valve. All can be supplied actuated.