Product Features Of Lined Ball Valve

Operational Reliability
The Lined Ball Valve's interlocking components (valve seat and stem bearings) utilize low-friction Teflon, resulting in low operating torque. Furthermore, the long-term lubrication of the sealing grease ensures smooth operation.
Valve Seat Structure
Valve seats are available in two configurations: single-seal and double-seal. Single-seal valves generally feature a self-relieving function, while double-seal valves utilize an additional safety relief mechanism on the valve body.
Stem Extension
Stem extensions are suitable for underground and low-temperature applications. The extension size is determined based on specific requirements. Operation modes include manual, pneumatic, electric, and gas-hydraulic.
Safety Against External Forces
The valve body's wall thickness is designed in accordance with high-pressure vessel safety regulations. It meets API 6D requirements for bending resistance and withstands external forces, ensuring sufficient strength.
Stem Gland Seal
The gland seal utilizes four O-rings and a sealant grease injection device, as shown in the figure.