法兰止回阀主要依靠介质本身流动而自动开、闭阀瓣，是用来防止介质倒流的阀门，该阀采用法兰连接， 广泛应用于电站，石油，化工，制药，食品等行业。
Features
• Flange Mounting PN16 Only
• BS5153 (BS EN 558-1 Series 10)
Main Materials
| N. |
Part Name |
Materials |
| 1 |
Body |
Cast Iron GG25 |
| 2 |
Seat Ring |
Cast Bronze |
| 3 |
Disc Ring |
Cast Bronze |
| 4 |
Disc Ring |
Cast Iron |
| 5 |
Hanger |
Cast Iron |
| 6 |
Washer |
Steel |
| 7 |
Nut |
Steel |
| 8 |
Split Pin |
Stainless Steel |
| 9 |
Disc Screw |
Steel |
| 10 |
Side Pin |
Brass |
| 11 |
Gasket |
Soft Steel Cardboard |
| 12 |
Hanger Pin |
Stainless Steel |
| 13 |
Bonnet |
Cast Steel |
| 14 |
Gasket |
Graphite |
| 15 |
Bolt |
Steel |
| 16 |
Nut |
Steel |
| 17 |
Identication Plate |
Aluminum |
| 18 |
Pin |
Stainless Steel |
Dimensions
| DN |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
| L |
203 |
216 |
241 |
292 |
330 |
356 |
496 |
622 |
699 |
| D |
165 |
185 |
200 |
220 |
250 |
285 |
340 |
405 |
460 |
| D1 |
125 |
145 |
160 |
180 |
210 |
240 |
295 |
355 |
410 |
| D2 |
99 |
118 |
132 |
156 |
184 |
211 |
266 |
319 |
370 |
| B |
20 |
20 |
22 |
24 |
26 |
26 |
30 |
32 |
32 |
| N-d |
4-19 |
4-19 |
8-19 |
8-19 |
8-19 |
8-23 |
12-23 |
12-28 |
12-28 |
| f |
3 |
3 |
3 |
3 |
3 |
3 |
3 |
3 |
4 |
| H |
112 |
132 |
141 |
162 |
192 |
211 |
270 |
316 |
357 |
| Kgs |
11.6 |
17.5 |
21.4 |
37 |
56.2 |
72.4 |
123 |
201 |
291 |
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