All-weldsd ball valve using a long-tsrm reliabls opsration, no maintenance, easy to install, especially DN300 bslow the valvs installation becomes more convenient, not only reduces the cost of construction, but also saves time.
Fully welded ball valve is widely used in city gas, urban heating, petrochemical, shipbuilding, steel, regulator station on all kinds of pipeline equipment, power plants and so on.
Body pressure detection
ANSI B 16.34 Section 7.1 | ||
Valve size NPS | Test pressure | Test time sce |
DN50≥ | 1:5 times the 100°C F | 15second |
DN65-200 | Rating of AN ST Class | 60second |
DN250≤ | Max. operating pressure | 180second |
Detect pressure than the maximum working pressure valve 1.5 times higher (100F) | ||
1.Seal hydrostatic test:The pressure should be more 1.1 times than working pressare by seal hydrastatic test.
ANSI B 16.34 Section 7.2 | ||
Valve size NPS | Test pressure | Test time sce |
DN50≥ | 1:5 times the 100°C F | 15second |
DN65-200 | Rating of AN ST Class | 30second |
DN250≤ | Max. operating pressure | 60second |
Detect pressure than the maximum working pressure valve 1.5 times higher (100F) | ||
2.Seal air test: Seal air leakage test is based on 80psig (6kgf/cm^ nin-actiue gas or full filled with air, after dose the valve, then check it is leakage or not by one side of the valve.
Main dimensions
| DN(mm) | A | B | L | D | D1 | D2 |
| 15 | 129 | 64 | 210 | 15 | 21.3 | 42 |
| 20 | 129 | 64 | 230 | 15 | 26.7 | 42 |
| 25 | 159 | 76 | 230 | 20 | 33.4 | 48 |
| 32 | 159 | 85 | 260 | 25 | 42.2 | 60 |
| 40 | 230 | 95 | 300 | 32 | 48.3 | 76 |
| 50 | 230 | 100 | 300 | 40 | 60.3 | 89 |
| 65 | 300 | 159 | 300 | 50 | 76.1 | 114 |
| 80 | 300 | 170 | 300 | 65 | 88.9 | 140 |
| 100 | 450 | 192 | 325 | 80 | 114.3 | 165 |
| 125 | 450 | 208 | 325 | 100 | 141.3 | 216 |
| 150 | 450 | 241 | 350 | 125 | 168.3 | 219 |
