1.公称直径: 50mm≤DN≤1200mm ,超过1200mm需标定
·粗铸收缩段:100mm≤DN≤800mm
·机械加工收缩段:50mm≤DN≤250mm
·粗焊铁板收缩段:200mm≤DN≤1200mm
2. 节流孔径比β:0.3≤β≤0.75
·粗铸收缩段:0.3≤β≤0.75
·机械加工收缩段:0.4≤β≤0.75
·粗焊铁板收缩段:0.4≤β≤0.7
3.雷诺数范围: 2×105≤ReD≤2×106
·粗铸收缩段:2×105≤ReD≤2×106
·机械加工收缩段:2×105≤ReD≤106
·粗焊铁板收缩段:2×105≤ReD≤2×106
4.精度等级:1级2100433B