Manual two-way hard seal eccentric half ball valve

Description

Manual two-way hard seal eccentric half ball valve

The Manual Two‑Way Hard‑Seal Eccentric Half Ball Valve employs a double-offset, eccentric half-ball design that minimizes wear by ensuring the ball only contacts the seat at the final stage of closure. This hard-seal configuration—typically metal-to-metal, using alloys such as Stellite or Inconel—creates truly bubble-tight shut-off. As a manual valve, it features a hand lever or manual worm-gear drive that provides direct control and full feedback, making it ideal for on-site isolation tasks in petrochemical, power, steam, and slurry service systems.

Engineered for industrial durability, this valve combines low-torque operation with rugged sealing performance. The eccentric hard-seal design protects the seat surface during operation, allowing superior longevity even with abrasive or corrosive fluids. The two-way flow path supports bidirectional isolation, simplifying system layout and enabling faster shut-off. Its full-bore or reduced-bore configuration minimizes pressure drop and avoids media retention, making it suitable for precision control and safety-critical installations.

The valve body, fabricated from carbon steel, stainless steel, or alloy steel, meets industry standards such as API 6D and ASME B16.34. It includes anti-static grounding to prevent charge buildup, a blow-out-proof stem design for safety, and live-loaded gland packing to maintain seal integrity over thermal cycles and prolonged use. Optional fire-safe certification (API 607/6FA) is available for use in emergency systems or high-temperature lines.

Ideal for industrial manual control, the Manual Two‑Way Hard‑Seal Eccentric Half Ball Valve delivers reliable performance in environments where automated actuation isn’t necessary but seat integrity and isolation quality are critical. The low-torque design makes hand operation convenient, while metal hard-sealing ensures dependable bubble-tight shut-off across high pressure, abrasive, and chemically aggressive flows. Its manual configuration suits critical shut-off duties in oil & gas, chemical processing, power generation, and water treatment systems.

Maintenance is made easy through the valve’s split-body or top-entry design, enabling inline access to seats, ball, and packing without pipeline removal. No need to dismantle the system for servicing—reducing downtime and maintenance costs. The valve’s compact design and two-way isolation capability simplify installation, and its rugged construction supports long service life in harsh industrial environments.

System operators rely on this manual hard-seal valve for pressure testing, isolation during maintenance or pump change-out, and tight shut-off in sampling or bypass lines. The low actuation torque means operators can control pressure and flow without strain, even under full system pressure. The robust metal Seal resists erosion and thermal shock, ensuring long-term reliability.

The Manual Two‑Way Hard‑Seal Eccentric Half Ball Valve is a professional-grade solution for engineers seeking a dependable manual valve that combines high-integrity sealing, low-torque operation, and robust manual control capability. Whether for routine isolation, emergency shut-off, or precision on-site adjustments, this valve ensures consistent performance and dependable service in critical process systems.