The American Standard Extended Stem Globe Valve is a globe valve designed according to American standards, primarily characterized by its specially extended stem. This extended stem design does not alter the fundamental function of the globe valve but is engineered to meet specific extreme operating conditions, particularly when handling cryogenic (e.g., LNG, liquid oxygen) or high-temperature media, and when the valve is installed in pipelines requiring thick insulation. The extended stem effectively isolates the valve's packing and operating mechanism from extreme temperature zones, protecting seals and operational components from damage, while allowing operators to access and manipulate the valve from outside the insulation layer.
| No. | Item Name | 150(Lb) | 300(Lb) | 600(Lb) | 900(Lb) | 1500(Lb) |
|---|---|---|---|---|---|---|
| 1 | Nominal Pressure PN (MPa) | 2.0 | 5.0 | 10.0 | 15.0 | 25.0 |
| 2 | Case Test Pressure (MPa) | 3.0 | 7.5 | 15.0 | 22.5 | 37.5 |
| 3 | High-pressure sealing Test pressure (MPa) | 2.2 | 5.5 | 11.0 | 16.5 | 27.5 |
| 4 | Maximum temperature Working pressure (MPa) | ≤2.0 | ≤5.2 | ≤10.4 | ≤15.6 | ≤25.8 |
| Design Standard | Structure Length | Flange Connection Size | Test and Inspection | Pressure and Temperature Reference |
|---|---|---|---|---|
| Bs1873 | ASME B16.10 | ASME B16.5 | API 598 | ASME B16.34 |
| Part Name | Material Name |
|---|---|
| Body | A216 WCB, A217 WC6, A351 CF8, A351 CF8M, A351 CF3, A351 CF3M |
| Valve Cover | A216 WCB, A217 WC6, A351 CF8, A351 CF8M, A351 CF3, A351 CF3M |
| Valve Plate | A216 WCB, A217 WC6, A351 CF8, A351 CF8M, A351 CF3, A351 CF3M |
| Sealing Face | 2Cr13, STL, Body/STL |
| Stem | A182 F6a, A182 F11, A182 F304, A182 F316, A182 F304L, A182 F316L |
| Gasket | 304+Flexible Graphite |
| Bolt | A193 B7, A193 B8, A193 B8M |
| Nut | A194 2H, A194 6, A194 8, A194 8M |
| Operating Temperature | -29 |
| Applicable Medium | Water, Steam, Oil products, etc.; Water, Steam, etc.; Nitric acid type weak corrosive medium |
No drawing available.