Liangzheng Forged Steel Floating Ball Valve

Brand	Liangzheng
Models	Q41N, Q41X, Q41F, Q47F, Q11N, Q347X, Q347F, Q847X
Key Features	1) Low Flow Resistance • Small fluid resistance (among the lowest of all valve types), even for reduced bore designs.2) Fast Switching (90° Operation) • Quick open/close: stem rotation of 90° achieves full open or full close. 3) Excellent Seat Sealing • Seat sealing ring uses elastic materials such as PTFE (polytetrafluoroethylene). • Soft-seal structure enables tight shutoff; sealing force increases as medium pressure increases. 4) Reliable Stem Seal • Stem rotates without lifting during operation, reducing packing wear. • Reverse sealing force increases with medium pressure. 5) Long Service Life • PTFE and similar materials provide self-lubrication and low friction, extending valve life. 6) Automation Ready • Can be fitted with pneumatic, electric, hydraulic actuators for remote control and automatic operation. 7) Smooth Flow Path • Smooth internal passage supports viscous fluids and slurry transport. 8) Easy Installation • Can be installed in any direction at any pipeline location. 9) Advanced Floating Ball Seat Sealing Characteristics • Floating ball valve seats use polymer materials such as PTFE and other engineered polymers. • Soft seat provides strong sealing but may increase operating torque; to optimize, designs may use: – Double-inclined elastic seal ring, or – V-groove elastic seal ring structure. • Pressure-assisted sealing principle: – At low medium pressure: smaller contact area produces higher sealing pressure for reliable shutoff. – At high medium pressure: contact area increases so the seat withstands thrust without damage. • For very low working pressure conditions: – Lip-shaped seat design using elastic deformation improves sealing reliability and reduces torque.

Brand

Liangzheng

Models

Q41N, Q41X, Q41F, Q47F, Q11N, Q347X, Q347F, Q847X

Key Features

1) Low Flow Resistance
• Small fluid resistance (among the lowest of all valve types), even for reduced bore designs.2) Fast Switching (90° Operation)
• Quick open/close: stem rotation of 90° achieves full open or full close.

3) Excellent Seat Sealing
• Seat sealing ring uses elastic materials such as PTFE (polytetrafluoroethylene).
• Soft-seal structure enables tight shutoff; sealing force increases as medium pressure increases.

4) Reliable Stem Seal
• Stem rotates without lifting during operation, reducing packing wear.
• Reverse sealing force increases with medium pressure.

5) Long Service Life
• PTFE and similar materials provide self-lubrication and low friction, extending valve life.

6) Automation Ready
• Can be fitted with pneumatic, electric, hydraulic actuators for remote control and automatic operation.

7) Smooth Flow Path
• Smooth internal passage supports viscous fluids and slurry transport.

8) Easy Installation
• Can be installed in any direction at any pipeline location.

9) Advanced Floating Ball Seat Sealing Characteristics
• Floating ball valve seats use polymer materials such as PTFE and other engineered polymers.
• Soft seat provides strong sealing but may increase operating torque; to optimize, designs may use:
– Double-inclined elastic seal ring, or
– V-groove elastic seal ring structure.

• Pressure-assisted sealing principle:
– At low medium pressure: smaller contact area produces higher sealing pressure for reliable shutoff.
– At high medium pressure: contact area increases so the seat withstands thrust without damage.

• For very low working pressure conditions:
– Lip-shaped seat design using elastic deformation improves sealing reliability and reduces torque.