Introduction
Ball valve and gate valve belong to the same type of valve. The difference is that its closing part is a ball. The ball rotates around the center line of the valve body to open and close. Ball valve is mainly used to cut off, distribute and change the flow direction of medium in the pipeline. Flange ball valve standard GB / t21465-2008 "valve terminology" is defined as a valve in which the hoist (ball) is driven by the valve stem and rotates around the axis of the valve stem.
DN | d | L | D | C | R | b | N | h | E | U | ◊S |
15 | 15 | 115 | 95 | 65.0 | 45 | 14 | 4 | 14 | 42 | M5 | 9 |
20 | 20 | 120 | 105 | 75.0 | 58 | 16 | 4 | 14 | 42 | M5 | 9 |
25 | 25 | 125 | 115 | 85.0 | 68 | 16 | 4 | 14 | 42 | M5 | 12 |
32 | 32 | 130 | 140 | 100.0 | 78 | 18 | 4 | 19 | 50 | M6 | 12 |
40 | 40 | 140 | 150 | 110 | 88 | 18 | 4 | 19 | 50 | M6 | 14 |
50 | 50 | 150 | 165 | 125.0 | 102 | 20 | 4 | 19 | 70 | M8 | 17 |
65 | 65 | 170 | 185 | 145.0 | 122 | 20 | 4 | 19 | 102 | M10 | 19 |
80 | 80 | 180 | 200 | 160 | 138 | 22 | 8 | 19 | 102 | M10 | 19 |
100 | 100 | 190 | 220 | 180 | 158 | 24 | 8 | 19 | 102 | M10 | 22 |
125 | 125 | 325 | 250 | 210 | 188 | 26 | 8 | 19 | 125 | M12 | 27 |
150 | 150 | 350 | 285 | 240 | 212 | 26 | 8 | 23 | 140 | M16 | 27 |
200 | 200 | 400 | 340 | 295 | 268 | 30 | 12 | 23 | 165 | M20 | 30 |
250 | 250 | 450 | 405 | 355 | 320 | 32 | 12 | 27 | 165 | M20 | 33 |
Flange end | EN 1092-2 |
Face to face DN15-DN100 | DIN3202 F4 |
Face to face DN125-DN250 | DIN3202 F5 |
Design and manufacture | DIN 3357 |