API Forged Flanged Gate Valve
Engineered for critical isolation in demanding industrial networks, this API forged flanged gate valve features a high-density forged body that eliminates casting defects while ensuring structural integrity under extreme pressure and temperature fluctuations. The standardized flanged ends facilitate seamless integration and streamlined maintenance. Beyond its robust exterior, the valve incorporates an OS&Y structure to protect stem threads from corrosive media and flexible graphite packing for low-fugitive emission control. When fully retracted, the precision-ground wedge provides a clear, full-bore flow path, significantly minimizing pressure drop and optimizing efficiency across the oil, gas, and energy sectors.
Pressure Rating: 150 LB – 2500 LB, 1.0 – 42.0 MPa
Size Range: 1/2″ – 60″ (DN 15 – DN 1500)
Working Temperature: -86°C to 816°C
Standards: API, ANSI, ASME, DIN, JIS, BS
Materials: Carbon Steel, Stainless Steel, Alloy Steel, Special Alloys
Operation: Manual, Gear, Electric, Pneumatic
Structural Characteristics of
The body is crafted from high-quality A105N forged steel, ensuring continuous and dense metal fibers that eliminate sand holes and micro-cracks found in castings. This material superiority maintains structural integrity under the intense pressure fluctuations of refinery high-pressure cycles or long-distance pipelines, preventing media leakage.
The Outside Screw and Yoke (OS&Y) configuration isolates the stem threads from the fluid path. Even when handling fuel oils or industrial cooling water with trace impurities, the threads remain protected from erosion or corrosion, significantly reducing the risk of seizure and extending the operational lifespan and precision.
Equipped with a precision-ground solid wedge, the valve can handle fluid pressure from both directions. This feature makes it the ideal choice for tank farm loading/unloading systems or pump isolation sections, providing bubble-tight shut-off regardless of flow direction and ensuring safe isolation during maintenance.
Strictly adhering to ASME B16.5 flange standards, this valve integrates seamlessly into offshore oil/gas platforms or chemical skids without specialized adapters. The convenience of flanged ends allows for off-line maintenance or rapid replacement without compromising the main pipeline, drastically minimizing production line downtime.
Featuring a split-type stuffing box with self-lubricating graphite and braided rings, supported by constant gland bolt pre-loading. In scenarios like power plant saturated steam or thermal oil systems with frequent thermal cycling, this structure compensates for expansion and contraction, ensuring a durable and reliable dynamic seal at the stem.
- The rising stem provides an intuitive visual indicator of the fully open or closed status for site inspectors. This is crucial for managing large-scale industrial fluid distribution networks, effectively preventing overpressure risks caused by operational errors and enhancing overall system controllability.
Class CL150-600 Main Connection Dimensions
| NPS Specification | Class / Type | End Connection | 1/4 | 3/8 | 1/2 | 3/4 | 1 | 1 1/4 | 1 1/2 | 2 | 2 1/2 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Face to face (mm) | CL150 | L (RF) | – | – | 108 | 117 | 127 | 140 | 165 | 178 | 190 |
| CL300 | L1 (BW) | – | – | 140 | 152 | 165 | 178 | 190 | 216 | 241 | |
| CL600 | – | – | 165 | 190 | 216 | 229 | 241 | 292 | 330 | ||
| Handwheel diameter (mm) | W | – | – | 100 | 100 | 125 | 160 | 160 | 180 | 200 | |
| Height (mm) | CL150 / CL300 | – | – | 176 | 184 | 217 | 226 | 250 | 290 | 357 | |
| CL600 | – | – | 161 | 163 | 196 | 226 | 250 | 290 | 357 | ||
| Flow port dimension (mm) | d | – | – | 10 | 13.5 | 18 | 24 | 29 | 36.5 | 45 | |
| Weight (kg) | CL150 | RF | – | – | 3.4 | 3.98 | 6.12 | 7.2 | 10.4 | 15.5 | 24.5 |
| CL150 | BW | – | – | 2.8 | 3.3 | 5.4 | 6.5 | 8.2 | 12.5 | 20 | |
| CL300 | RF | – | – | 3.77 | 4.89 | 7.23 | 9.6 | 12.64 | 18 | 26.2 | |
| CL300 | BW | – | – | 3.5 | 4.4 | 6.8 | 8.1 | 9.2 | 15.4 | 22 | |
| CL600 | RF | – | – | 4.2 | 5.8 | 8.8 | 12.1 | 15.6 | 19.5 | 32 | |
| CL600 | BW | – | – | 4.5 | 5.1 | 8.2 | 10.5 | 12.4 | 20.1 | 28 | |
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