Licensed rating value required — no table lookup
Documented Flange Rating Arithmetic Check
Compare operating gauge pressure with a documented maximum working gauge pressure obtained for the same temperature and exact flange/material basis.
Arithmetic comparison
Arithmetic only
margin = Pdoc−Pop
“Within entered limit” means only that the operating gauge pressure number does not exceed the documented gauge-pressure number supplied by the user. It is not a standards conformity,safety or fitness-for-service decision. Another component,load case,temperature excursion,material limitation or legal requirement can govern.
Unit conversions
The calculation converts through pascals using1bar=100000Pa,1MPa=1000000Pa and1psi=6894.757293168Pa. Temperature uses T°C=(T°F−32)·5/9 and TK=T°C+273.15. Gauge and absolute pressure must not be mixed.
Standards context — licensed tables not implemented
ASME B16.5—2025 is the current official edition and covers pressure-temperature ratings,materials,dimensions,tolerances,marking and testing for its specified NPS/class scope. Its official scope includes Classes150,300,400,600,900,1500 and2500 with size restrictions;the former page omitted Class400 and its numerical rows were not verified against the licensed2025 tables.
EN1092-1:2018 is the current steel-flange edition identified by BSI/DIN and uses PN-designated flanges,with its own materials and p/T rules. It superseded the2007+A1:2013 edition. An EN selection must never reuse ASME Class/material-group rows.
Not checked: edition/table applicability,material specification/group,product form,NPS/DN,size restriction,class/PN,flange/fitting type,temperature boundary,interpolation permission,corrosion,external loads,cyclic service,bolting,gasket,joint integrity,other piping/equipment ratings or jurisdiction.
Conversion reference:NIST SP811 conversion factors. Standards status/scope checked12July2026. No closed rating row,clause or interpolation rule is asserted.
Nikolai Shelkovenko
Nikolai Shelkovenko is a vibration analysis engineer and the founder and CEO of Vibromera. For more than 15 years he has balanced rotating equipment in the field rather than on a test bench: mulchers, industrial fans, crushers, centrifuges, shafts and spindles. That work is what the Balanset instruments grew out of — they were designed as a tool a specialist can carry to the machine and use alone, on site, not as laboratory equipment. Vibromera was founded in 2017 and has been based in Porto, Portugal, since 2023. Development, assembly and support of the Balanset line all happen here. The flagship instrument is the Balanset-1A, a portable analyser for single- and two-plane balancing and for vibration diagnostics. Nikolai is personally involved in customer support, in working through difficult balancing cases and in the development of the software. He works with customers worldwide, in any language.
