Split body reduce bore trunnion mounted ball valve have two piece and three piece body structure.middle part is bolt connection, RPTFE seal insert into stainless steel ring with spring .keep good sealling...
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The top-mounted eccentric hemispherical valve uses an eccentric valve body, eccentric ball, and seat. When the valve stem rotates, it automatically aligns with the common path, ensuring tighter closure and better sealing performance. The ball is completely separated from the seat, eliminating wear on the seal ring and overcoming the issue of wear on the traditional ball valve seat and ball sealing surface. Non-metallic elastic materials are embedded in the metal seat, protecting the metal surface of the valve seat. This product is particularly suitable for media such as steel, aluminum, fibers, small solid particles, pulp, coal ash, and petroleum gas.
● Top Entry Structure: Access to internal components directly for online maintenance, inspection, or replacement without removing the valve from the system.
● Gear Operation: Simply rotate 90 degrees to achieve fast and precise control response, making it an ideal choice for field adjustment.
● Eccentric Hemisphere: Supports flexible installation of actuators or transmissions without additional brackets.
| Item | Part. Name | Material |
| 1 | Bonnet | PE |
| 2 | Extension pipe | st37 |
| 3 | Body | st37 |
| 4 | Flat washer | st37 |
| 5 | Butterfly Spring | 60Si2MnA |
| 6 | Ball seat | SS202 |
| 7 | O-ring | EPDM |
| 8 | Ball washer | PTFE+20%C |
| 9 | Ball | SS304 |
| 10 | Stem washer | PTFE+20%C |
| 11 | Stem sleeve | st37 |
| 12 | Stem | SS410 |
| 13 | Stem ring | PTFE+20%C |
| 14 | Stem O-ring | FPM |
| 15 | Sleeve | st37 |
| 16 | Positioning PIN | ASTM1035 |
| 17 | Handle | st37 |
| 18 | Washer | Q235A |
| 19 | Nut | Q235A |
| 20 | Handle cap | ABS |
| Type | Nominal pressure(MPa) | Testing pressure | Suitable temperature(°C) | Suitable medium | |
| Strength (water) (MPa) | Enclose (Water) (MPa) | ||||
| Q340 H-16C | 1.6 | 2.4 | 1.76 | -40~200ºC | Water,Vapour,Oil |
| Q340 H-25C | 2.5 | 3.75 | 2.5 | ||
Q: What is the main advantage of a top-entry valve design?
A: The top-entry design allows for maintenance or part replacement without removing the valve from the pipeline—ideal for critical systems where downtime must be minimized.
Q: Is it compliant with any specific industry standards?
A: Yes, it follows API 6D/6A and ASME B16.10 design standards, including features like firesafe design, O-ring sealing, and DBB capability.
Our gear-operated forged steel top-mounted ball valve design fully considers maintenance needs. The top-mounted structure and modular design make maintenance simple, reducing downtime during inspections or repairs. This valve features DBB, self-tilting seats, and fire integrity, providing reliable control and safety with each rotation. It is an ideal solution for teams that prioritize pipeline operation performance and practicality.
