Butterfly Check Valve
˜ËœÊSTD
ÔOÓ‹ÅcÖÆÔì
Design And
Manufacture
½Y˜‹éL(ch¨¢ng)¶È
Face to face
End to end
·¨Ìm³ß´ç
Flange Dimension
Œ¦º¸ßB½Ó³ß´ç
Butt welding
dimension
‰ºÁ¦-œØ¶È
Pressure
Temperature Lating
Ô‡òž-™zòž
Inspecition
and test
API594¡¢API9D
API594¡¢
API6DDIN3202
ANSI B16.5A
ANSI B16.25A
ANSI B16.25
API598
Ö÷ÒªÍâÐγߴç Main outline size
°õ¼‰
Class
ÒŽ¸ñin
Size
2
2 1/2
3
4
6
8
10
12
14
16
18
20
24
150
L
60
67
73
98
127
146
181
184
191
203
219
222
D
103
106
135
173
220
276
338
410
451
514
549
606
718
300
232
110
129
148
179
251
306
360
422
484
540
600
79
137
165
213
229
192
265
319
398
456
900
70
83
102
159
206
141
164
167
205
289
359