The ball of the ball valve is fixed and does not move when pressed. The Trunnion ball valve is equipped with a floating valve seat. After receiving the pressure of the medium, the valve seat moves, so that the sealing ring is pressed tightly on the ball to ensure sealing. Bearings are usually installed on the upper and lower shafts of the sphere, and the operating torque is small, which is suitable for high pressure and large diameter valves. In order to reduce the operating torque of the ball valve and increase the reliability of the seal, oil-sealed ball valves have appeared in recent years. Special lubricating oil is injected between the sealing surfaces to form an oil film, which enhances the sealing performance and reduces the operating torque. , It is more suitable for high pressure and large diameter ball valves.The ball of the ball valve is floating. Under the action of the medium pressure, the ball can produce a certain displacement and press tightly on the sealing surface of the outlet end to ensure that the outlet end is sealed. The floating ball valve has a simple structure and good sealing performance, but the load of the sphere bearing the working medium is all transmitted to the outlet sealing ring, so it is necessary to consider whether the sealing ring material can withstand the working load of the sphere medium. This structure is widely used in medium and low pressure ball valves. If you need more details about valves please contact NSW(newsway valve) sales department1. Full or Reduced Bore 2. RF, RTJ, BW or PE 3. Side entry, top entry, or welded body design 4. Double Block & Bleed (DBB)，Double Isolation & Bleed (DIB) 5. Emergency seat and stem injection 6. Anti-Static Device 7. Anti-Blow out Stem 8. Cryogenic or High Temperature Extended Stem
Advantages of Carbon Steel Ball Valves Carbon Steel Ball Valve designed according to API 6D standard with a variety of advantages, including reliability, durability, and efficiency. Our valves are designed with an advanced sealing system to reduce the chances of leakage and to ensure a longer service life. The design of the stem and disc ensures a smooth operation, which makes it easier to operate. Our valves are also designed with an integrated backseat, which ensures a secure seal and prevents any potential leakage.
STANDARD | Design & manufacture | API 6D,ASME B16.34 |
| Face-to-face | ASME B16.10,EN 558-1 |
| End Connection | ASME B16.5, ASME B16.47, MSS SP-44 (NPS 22 Only) |
| - Socket Weld Ends to ASME B16.11 | |
| - Butt Weld Ends to ASME B16.25 | |
| - Screwed Ends to ANSI/ASME B1.20.1 | |
| Test & inspection | API 598, API 6D,DIN3230 |
| Fire safe design | API 6FA, API 607 |
| Also available per | NACE MR-0175, NACE MR-0103, ISO 15848 |
| Other | PMI, UT, RT, PT, MT |