API 6D top entry ball valves have inlets and outlets at the top of the ball, where fluid enters the inside of the ball from the top and exits through the seat. This can make the inside of the ball body form a completely closed cavity, avoiding fluid entering the inside of the valve stem, thus prolonging the service life of the valve. Suitable for gas, liquid and other media in small and medium diameter pipeline cut-off and regulation, widely used in petrochemical, metallurgy, environmental protection and other industrial and civil fields.
API 6D top entry ball valves Specification
| Design | API 6D,API 6DSS,API 6A, ASME B16.34,ISO 14313,ISO 10423,ISO 17292 |
| Design pressure | ASME B16.34.EN 1092-1, ISO 17292 |
| Body wall thickness | ASME B16.34, ASME VIII DIV.I,ISO 17292 |
| Face to Face | API 6D.ASME B16.10 Long pattern |
| Temperature range | -50° to 200°C (-58° to 392°F) |
| Pressures range | PN20 (ANSI 150) to PN420 (ANSI 2500) |
| Size range | DN15 (1/2") tO DN1400 (56") |
| End connections | ASME B16.5 S DN600 (24") Flanged RF, FF, RTJ MSS-SP-44 = DN550 (22") Flanged RF,FF, RTJ ASME B16.47 A2DN650 (26" Flanged RF, FF, RTJ ASME B16.25 Butt-Weld BW Clump(HUB) |
API 6D top entry valve
Difference between top Entry ball valve and ball valve
1. Performance difference
Due to the special structural design of the top inlet ball valve, it is more superior in shut-off and regulating performance, and has higher sealing and reliability than the traditional ball valve. The valve seat of top inlet ball valve is made of new material, which can adapt to the requirements of a variety of media, and can ensure normal use for a long time. The traditional ball valve is easy to use when the ball sliding does not work and other problems, affecting the use of the effect.
2. Other differences
Top inlet ball valves in the installation and maintenance is more convenient, can be dismantled on top of the maintenance. While the ball valve needs to disassemble the entire valve body for maintenance, more trouble. In addition, the weight of the top entrance ball valve is light, small volume, and its modeling structure is more beautiful.
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