The top-entry ball valve can be disassembled from the body of the valve, so all parts can be easily maintained or replaced in-line.

This construction allows more flexibility in customization of driving train design, allowing for example the mounting of an actuator directly on the bonnet without an intermediary bracket.

The Hastelloy steel ball valve opens or closes through the 90° rotation of the ball to realize the connection and cut-off function of the pipeline. The valve is connected to the actuator (electric, pneumatic, worm gear drive, hydraulic or gas-liquid linkage, etc.) through the key on the valve stem. The output torque of the actuator is transmitted to the valve stem, and the valve stem drives the ball to rotate 90° to realize the opening and closing action of the valve. The close fit between the ball and the seat ring, as well as reasonable material selection and precise processing, determine the best sealing pair matching as a cutting medium. The elastic element behind the valve seat provides the minimum pre-tightening force required for the seal between the valve seat and the ball. At the same time, the sealing surface design of the valve seat ring meets the required specific pressure and allowable specific pressure required for sealing.

Hastelloy steel ball valve structure is a hard-sealed ball valve. The valve is a split structure, and the ball and valve seat are installed from the side.

Valve body: Made of Hastelloy forged steel material. The chemical composition and mechanical properties meet the requirements of ASME standards.

• API 6D/6A design & construction
• API 6D & ASME B1610 face to face
• Antistatic device
• Double block and bleed (DBB)
• Drain plug
• Connection ends upon request
• Firesafe design
• O-ring seals
• Self-Relieving seat
• Soft seat insert
• Trunnion mounted
• Lifting lugs /valve support
• Vent plug