Wafer Double Disc Check Valve
Small size and low installation space requirements;
Close quickly and move sensitively;
Spring-loaded valve discs with guaranteed closure;
Optional soft seal design;
Pin shaft with built-in structure, no external leakage points.
Technical Parameters
|
Nominal Size |
2"~40"(DN50-DN1000) |
|---|---|
|
Nominal Pressure |
ASME 150 to 1500LB |
|
Applicable Temperature |
-196℃~800℃ |
|
Body Material |
WCB, CF8, CF8M, CF3, CF3M, LCB, 2205 Etc. |
| Design Standard |
API 6D, API 594, BS1868, ASME B16.34 |
| Pressure-Temperature Rating |
ANSI B16.34 |
| Face To Face |
ANSI B16.10 |
| End Connection |
Flanged Ends to ASME B16.5, Butt-weld Ends to ASME B16.25 |
| Inspection And Test |
API 598 |
| Mark |
MSS SP-25 |
Material List
| NO. | Parts name | Standard material | Low temperature environment |
Stainless steel material | Hign temperature environment |
Acidic environment |
|---|---|---|---|---|---|---|
|
1 |
Body |
ASTM A216-WCB+STL.6 |
ASTM A351-CF8M+STL.6 |
ASTM A352-LCC+STL.6 |
ASTM A217-WC9+STL.6 |
ASTM A216-WCB+STL.6 |
|
2 |
Clack |
ASTM A216-WCB+Cr13 |
ASTM A351-CF8M |
ASTM A352-LCC+316 |
ASTM A217-WC9+STL.6 |
ASTM A216-WCB+Cr13(NACE) |
|
3 |
Pin |
ASTM A276-410 |
ASTM A276-316 |
ASTM A276-316 |
ASTM A276-410 |
ASTM A276-410(NACE) |
|
4 |
Spring |
Inconel X-750 |
Inconel X-750 |
Inconel X-750 |
Inconel X-750 |
Inconel X-750 |
|
5 |
Spring seat |
ASTM A182-F6a |
ASTM A182-F316 |
ASTM A182-F316 |
ASTM A182-F6a |
ASTM A182-F6a(NACE) |
|
6 |
Spacer ring |
ASTM A182-F6a |
ASTM A182-F316 |
ASTM A182-F316 |
ASTM A182-F6a |
ASTM A182-F6a(NACE) |
|
7 |
Lifting lug |
Carbon steel |
Carbon steel |
Carbon steel |
Carbon steel |
Carbon steel |