一、Structures Characteristics And Usahe
It is a new product developed in this Co．，inside Of the valve a streamlined design is used for the flow path and a flow guide body is set．1t is mainly used in the outlet of water pump and other places preventing back flow of liquid，can effectively prevent the pump from shocking by water hammer produced when liquid flows back and protect the safety of the pipeline and has a silencing close feature．thus extending the duration An ideal product for updating check valve．
二、Main Technique number
| Noinal diameter |
50～500 |
| Nomianal pressure |
1.0 |
1.6 |
2.5 |
| Test pressure (MPa) |
Shell strength |
1.5 |
2.4 |
3.75 |
| Sealing performance |
1.1 |
1.76 |
2.75 |
| Working temperature |
≤ 200 |
| Applicable temperature |
Water、oil Ect |
三、 Material Far Main Parte
| Name of prates |
Material |
| Valve body and flow guide body |
Casting plg、Ductile lron、Cast steel、Stainless steel、Brassiness |
| Seat、轴瓦、Disc、Shaft |
Bronze or Cr stainiess steel |
| Spring |
Stainless steel |
五、 Main external And Connecting Dimensions
Nominal diameter
DN(mm) |
L |
PN10 |
PN16 |
PN25 |
| b |
f |
D2 |
D |
D1 |
Z-φd |
b |
f |
D2 |
D |
D1 |
Z-φd |
b |
f |
D2 |
D |
D1 |
Z-φd |
| 50 |
100 |
20 |
3 |
102 |
165 |
125 |
4-18 |
20 |
3 |
102 |
165 |
125 |
4-18 |
20 |
3 |
99 |
165 |
125 |
4-18 |
| 65 |
120 |
20 |
3 |
122 |
185 |
145 |
4-18 |
20 |
3 |
122 |
185 |
145 |
4-18 |
22 |
3 |
118 |
185 |
145 |
8-18 |
| 80 |
140 |
22 |
3 |
133 |
200 |
160 |
8-18 |
22 |
3 |
183 |
200 |
160 |
8-18 |
24 |
3 |
132 |
200 |
160 |
8-18 |
| 100 |
160 |
24 |
3 |
158 |
220 |
180 |
8-18 |
24 |
3 |
158 |
220 |
180 |
8-18 |
24 |
3 |
156 |
235 |
190 |
8-22 |
| 125 |
180 |
26 |
3 |
184 |
250 |
210 |
8-18 |
26 |
3 |
184 |
250 |
210 |
8-18 |
26 |
3 |
184 |
270 |
220 |
8-26 |
| 150 |
200 |
26 |
3 |
212 |
285 |
240 |
8-22 |
26 |
3 |
212 |
285 |
240 |
8-22 |
28 |
3 |
211 |
300 |
250 |
8-26 |
| 200 |
220 |
28 |
3 |
268 |
340 |
295 |
8"22 |
30 |
3 |
268 |
340 |
295 |
12-22 |
30 |
3 |
274 |
360 |
310 |
12-26 |
| 250 |
240 |
28 |
3 |
320 |
395 |
350 |
12-22 |
32 |
3 |
320 |
405 |
355 |
12-26 |
32 |
3 |
330 |
425 |
370 |
12-80 |
| 300 |
280 |
28 |
4 |
370/375 |
445 |
400 |
12-22 |
32 |
4 |
370/375 |
460 |
410 |
12-26 |
34 |
4 |
389 |
485 |
430 |
16-30 |
| 350 |
320 |
30 |
4 |
430/435 |
505 |
460 |
16-22 |
36 |
4 |
430/435 |
520 |
470 |
16-26 |
38 |
4 |
448 |
555 |
490 |
16-33 |
| 400 |
360 |
32 |
4 |
482/485 |
565 |
515 |
16-22 |
38 |
4 |
482/485 |
580 |
525 |
16-30 |
40 |
4 |
503 |
620 |
550 |
16-36 |
| 500 |
440 |
34 |
4 |
585/608 |
670 |
620 |
20-26 |
40 |
4 |
585/608 |
715 |
650 |
20-33 |
44 |
4 |
609 |
730 |
660 |
20-36 |
|
