As an industry-standard solution for non-corrosive media, the A216 WCB Floating Ball Valve combines mechanical durability with high cost-efficiency. Cast from ASTM A216 WCB carbon steel, it utilizes a pressure-assisted floating ball design and RPTFE seats to achieve bubble-tight, ANSI Class VI shut-off in Class 150/300 systems. This valve is engineered for reliability in oil, gas, and power applications, featuring an anti-blowout stem, anti-static protection, and API 607 fire-safe certification to ensure maximum operational safety.
Technical Specifications
| Item | Specification |
| Design Standard | API 6D / ASME B16.34 / BS 5351 |
| Pressure Rating | Class 150 / 300 / 600; PN16 - PN100 |
| Size Range | 1/2" - 8" (DN15 - DN200) |
| Working Temperature | -29°C to 200°C (Soft Seal); Up to 425°C (Metal Seal) |
| Leakage Class | ANSI/FCI 70-2 Class VI (Zero Leakage) |
| Fire-Safe Standard | API 607 / API 6FA |
| Connection Type | Flanged (RF, RTJ), Butt-Weld (BW), Socket-Weld (SW) |
Main Material List
| No. | Part Name | Material (ASTM Standard) | Note |
| 1 | Body | ASTM A216 WCB | High-Quality Cast Carbon Steel |
| 2 | Ball | ASTM A182 F304 / A351 CF8 | Optional A105+ENP (Nickel Plated) |
| 3 | Seat | PTFE / RPTFE / PEEK | Reinforced PTFE |
| 4 | Stem | ASTM A182 F6a / SS304 / SS316 | Anti-Blowout Design |
| 5 | Gasket | Flexible Graphite + SS304 | Fire-Safe Sealing |
| 6 | Packing | Flexible Graphite / PTFE | Self-lubricating, High Temp |
| 7 | Bolts / Nuts | ASTM A193 B7 / A194 2H | High-Strength Fasteners |
Main Connection and Outline Dimensions (Class 150)
Note: Dimensions follow ASME B16.10 (Face-to-Face) and ASME B16.5 (Flanges).
| Size (Inch) | DN (mm) | L (Length-mm) | D (Flange OD-mm) | C (Bolt Circle-mm) | n-Φ (Bolt Holes) | H (Height-mm) | W (Handle-mm) |
| 1/2" | 15 | 108 | 89 | 60.3 | 4-Φ16 | 68 | 130 |
| 1" | 25 | 127 | 108 | 79.4 | 4-Φ16 | 85 | 160 |
| 2" | 50 | 178 | 152 | 120.7 | 4-Φ19 | 125 | 230 |
| 3" | 80 | 203 | 190 | 152.4 | 4-Φ19 | 160 | 350 |
| 4" | 100 | 229 | 229 | 190.5 | 8-Φ19 | 190 | 400 |
| 6" | 150 | 394 | 279 | 241.3 | 8-Φ22 | 265 | 650 |
| 8" | 200 | 457 | 343 | 298.5 | 8-Φ22 | 330 | 800 |
Features:
Superior Cost-Efficiency: WCB carbon steel provides excellent mechanical properties at a much lower cost than stainless steel, making it the preferred choice for general industrial use.
Reliable Pressure-Assisted Sealing: The floating ball design uses upstream pressure to enhance the downstream seal; the higher the pressure, the tighter the seal.
Comprehensive Safety Guarantees:
Anti-Blowout Stem: A stepped design at the bottom of the stem prevents it from being ejected if internal pressure rises abnormally.
Anti-Static Device: Conductive connection between the ball and body is maintained via spring-loaded steel balls to prevent static buildup.
Fire-Safe Construction: If soft seats are destroyed in a fire, the ball contacts the metal lip on the body to create an emergency seal.
Minimal Flow Resistance: Full-bore design provides flow capacity nearly equal to the pipe itself, resulting in extremely low pressure drop.
GNEE A216 WCB Valve workshop
FAQ
What is ASTM A216 grade WCB material?
ASTM A216 Grade WCB is the industry-standard cast carbon steel used primarily for valve bodies, fittings, and pressure-containing parts.
What is the equivalent material of A216 WCB?
The equivalent material for ASTM A216 WCB depends on the form of the metal:
Wrought/Plate (Rolled): ASTM A516 Grade 70
Forged: ASTM A105
European/DIN Standard: 1.0619 (GP240GH)
Chinese Standard: WCB or ZG230-450
What is the difference between A216 and A105 WCB?
The main difference is the manufacturing process:
ASTM A216 WCB: This is Cast Steel. Molten metal is poured into a mold. It is used for larger valves and complex shapes.
ASTM A105: This is Forged Steel. Solid metal is heated and hammered or pressed into shape. It is used for smaller valves (typically 2" and below) and high-pressure fittings.
Hot Tags: a216 wcb floating ball valve, China a216 wcb floating ball valve manufacturers, suppliers, factory, api 6d floating ball valve, ball valve compliance, ball valve traceability, ball valve wholesale, trunnion style ball valve, welded ball valve