Nominal diametri bo'yicha tasniflanadi
·Kichik diametrli klapanlar: nominal o'lchamlari DN40 dan kam yoki unga teng bo'lgan valflar.
·O'rta diametrli klapanlar: nominal o'lchamlari DN50 dan katta yoki teng bo'lgan klapanlar~ DN300 dan kam yoki unga teng.
·Large diameter valves: valves with nominal sizes >DN350~ DN1200 dan kam yoki unga teng.
·Extra large diameter valves: valves with nominal size >DN1400.
Nominal bosim bo'yicha tasniflanadi
· Vakuum klapan: ish bosimi standart atmosfera bosimidan past bo'lgan valf.
· Past bosimli klapan: nominal bosimli valf PN16 dan kam yoki unga teng.
·Medium pressure valve: valve with nominal pressure>PN16~ PN100 dan kam yoki unga teng
·High-pressure valve: valve with nominal pressure >PN100~ PN 1000 dan kam yoki unga teng.
·O'ta yuqori bosimli klapan: nominal bosim > PN1000 bo'lgan valf.
