| Double eccentric hemispherical ball valve structure length and valve flange size |
| caliber |
L |
D |
D1 |
D2 |
N-φ |
b |
f |
| DN50 |
one hundred and seventy-eight |
one hundred and sixty |
one hundred and twenty-five |
one hundred |
4-18 |
sixteen |
three |
| DN65 |
one hundred and ninety |
one hundred and eighty |
one hundred and forty-five |
one hundred and twenty |
4-18 |
eighteen |
three |
| DN80 |
two hundred and three |
one hundred and ninety-five |
one hundred and sixty |
one hundred and thirty-five |
8-18 |
twenty |
three |
| DN100 |
two hundred and twenty-nine |
two hundred and fifteen |
one hundred and eighty |
one hundred and fifty-five |
8-18 |
twenty |
three |
| DN125 |
two hundred and fifty-four |
two hundred and forty-five |
two hundred and ten |
one hundred and eighty-five |
8-18 |
twenty-two |
three |
| DN150 |
two hundred and sixty-seven |
two hundred and eighty |
two hundred and forty |
two hundred and ten |
8-23 |
twenty-four |
three |
| DN200 |
two hundred and ninety-two |
three hundred and thirty-five |
two hundred and ninety-five |
two hundred and sixty-five |
12-23 |
twenty-six |
three |
| DN250 |
three hundred and thirty |
four hundred and five |
three hundred and thirty-five |
three hundred and twenty |
12-25 |
thirty |
three |
| DN300 |
three hundred and fifty-six |
four hundred and sixty |
four hundred and ten |
three hundred and seventy-five |
12-25 |
thirty |
four |
| DN350 |
three hundred and eighty-one |
five hundred and twenty |
four hundred and seventy |
four hundred and thirty-five |
16-25 |
thirty-four |
four |
| DN400 |
four hundred and six |
five hundred and eighty |
five hundred and twenty-five |
four hundred and eighty-five |
16-30 |
thirty-six |
four |
| ND500 |
four hundred and fifty-seven |
seven hundred and five |
six hundred and fifty |
six hundred and eight |
20-34 |
forty-four |
four |
| DN600 |
five hundred and eight |
eight hundred and forty |
seven hundred and seventy |
seven hundred and eighteen |
20-41 |
forty-eight |
four |