GB Floating Ball Valve
This product is a GB Floating ball valve, with the body made of A105 carbon steel, providing high mechanical strength and pressure resistance for fluid control in oil, chemical, and industrial pipeline systems. Featuring a full-bore floating ball design, the valve ensures smooth flow passage, low resistance, and rapid operation, making it suitable for bidirectional shutoff or flow regulation applications.
The valve uses a rising stem structure, allowing the opening position to be visually monitored for convenient on-site operation. Flanged ends are designed with RF (Raised Face) sealing surfaces, ensuring secure installation and compatibility with standard piping systems. Manual operation offers a simple and user-friendly mechanism, suitable for long-term service under conventional pressure ratings. This type of floating ball valve is widely used in industrial pipelines as a reliable switching and isolation device.
Pressure Rating: 1.0 – 42.0 MPa
Size Range: 1/2″ – 60″ (DN 15 – DN 1500)
Working Temperature: -29°C to 436°C
Standards: GB
Materials: Carbon Steel, Stainless Steel, Alloy Steel, Special Alloys
Operation: Manual, Gear, Electric, Pneumatic
Structural Characteristics of
The straight-through bore design allows the medium to pass with minimal change in flow direction. The resistance coefficient is close to that of a straight pipe of equal length, helping reduce system energy loss.
The forged steel body provides high structural strength. With fewer internal components and a compact design, the valve is lightweight and suitable for confined piping installations.
The floating ball is pushed against the downstream seat by line pressure, achieving self-energized sealing. PTFE or low-friction seat materials ensure stable sealing performance from vacuum to medium/high-pressure conditions.
Opening and closing are completed with a 90° rotation, providing quick response and low operating torque. The valve is suitable for lever, pneumatic, or electric actuation.
Seats and sealing rings are designed for replacement, simplifying routine maintenance and reducing downtime.
- When fully open or fully closed, the sealing surfaces are not exposed to direct flow impact, reducing wear and erosion.
Suitable for water, steam, oil, gas, and other media, and widely used in petroleum, chemical, power, and general industrial piping systems.
Once the ball reaches the closed position, full circumferential contact with the seat ensures reliable shutoff.
Main component materials
| Name | Material | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Body / Bonnet | CF8 | CF3 | CF8M | CF3M | WCB | LCB | WC6 | WC9 | C5 |
| Ball | CF8 | CF3 | CF8M | CF3M | WCB HCr | CF8 | CF8 | CF8 | CF8 |
| Stem | F304 | F304L | F316 | F316L | 2Cr13 | F304 | F304 | F304 | F304 |
| Seat | PTFE / PPL / 304 | ||||||||
| Packing / Gasket | PTFE | Graphite | |||||||
| Bolt | Stainless Steel | 35CrMoA | |||||||
| Nut | Stainless Steel | 45, 35CrMoA | |||||||
| Handle | Cast Steel | ||||||||
Class 150LB Main Connection Dimensions
| DN | SIZE | L | D | D1 | D2 | b | f | n-Φd | H | D0 |
|---|---|---|---|---|---|---|---|---|---|---|
| 15 | 1/2″ | 108 | 90 | 60.3 | 34.9 | 10 | 2 | 4-16 | 158 | 100 |
| 20 | 3/4″ | 117 | 100 | 69.9 | 42.9 | 10.9 | 2 | 4-16 | 163 | 100 |
| 25 | 1″ | 127 | 110 | 79.4 | 50.8 | 11.6 | 2 | 4-16 | 193 | 125 |
| 32 | 1-1/4″ | 140 | 115 | 88.9 | 63.5 | 13.2 | 2 | 4-16 | 250 | 160 |
| 40 | 1-1/2″ | 165 | 125 | 98.4 | 73 | 14.7 | 2 | 4-16 | 285 | 160 |
| 50 | 2″ | 178 | 150 | 120.7 | 92.1 | 16.3 | 2 | 4-19 | 325 | 180 |
| 65 | 2-1/2″ | 190 | 180 | 139.7 | 104.8 | 17.9 | 2 | 4-19 | 350 | 190 |
| 80 | 3″ | 203 | 190 | 152.4 | 127 | 19.5 | 2 | 4-19 | 380 | 200 |
| 100 | 4″ | 229 | 230 | 190.5 | 157.2 | 24.3 | 2 | 8-19 | 460 | 230 |
| 125 | 5″ | 254 | 255 | 215.9 | 185.7 | 24.3 | 2 | 8-22 | 630 | 250 |
| 150 | 6″ | 267 | 280 | 241.3 | 215.9 | 25.9 | 2 | 8-22 | 635 | 260 |
| 200 | 8″ | 292 | 345 | 298.5 | 269.9 | 29 | 2 | 8-22 | 765 | 290 |
| 250 | 10″ | 330 | 405 | 362 | 323.8 | 30.6 | 2 | 12-26 | 895 | 330 |
| 300 | 12″ | 356 | 485 | 431.8 | 381 | 32.2 | 2 | 12-26 | 1080 | 350 |
| 350 | 14″ | 381 | 535 | 476.3 | 412.8 | 35.4 | 2 | 12-29 | 1295 | 380 |
| 400 | 16″ | 406 | 595 | 539.8 | 469.9 | 37 | 2 | 16-29 | 1435 | 400 |
| 450 | 18″ | 432 | 635 | 577.9 | 533.4 | 40.1 | 2 | 16-32 | 1625 | 430 |
| 500 | 20″ | 457 | 700 | 635 | 584.2 | 43.3 | 2 | 20-32 | 1830 | 450 |
| 600 | 24″ | 508 | 815 | 749.3 | 692.2 | 48.1 | 2 | 20-35 | 2175 | 500 |
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