API Cast Flange Gate Valve
This product is a API Cast flange gate valve, engineered for industrial pipeline systems to provide reliable flow isolation and on/off control. The body is cast from high-strength materials, offering durable pressure resistance and stable mechanical performance suitable for oil, chemical, power, and general industrial media.
The wedge-shaped gate provides minimal pressure drop when fully open, ensuring efficient fluid transport. The rising stem design allows the valve position to be visually confirmed for convenient on-site operation and monitoring. Flanged connections feature ANSI RF (Raised Face) sealing surfaces, providing secure installation and dependable sealing, fully compatible with standard pipeline systems. Manual operation offers simple and practical control with low maintenance requirements. This gate valve is widely used in industrial pipelines as a reliable solution for fluid shutoff.
Pressure Rating: 150 LB – 600 LB, 1.0 – 42.0 MPa
Size Range: 1/2″ – 60″ (DN 15 – DN 1500)
Working Temperature: -29°C to 266°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 made of ASTM A351 CF8 austenitic stainless steel, providing excellent corrosion and oxidation resistance for chemical and aggressive media service.
When fully open, the bore matches the pipeline diameter, ensuring minimal pressure drop.
Precision-machined sealing surfaces ensure dependable shutoff in both flow directions.
Stem movement clearly indicates valve position for safe and easy operation.
RF flanges comply with ASME B16.5, ensuring reliable installation and sealing.
Suitable for water, steam, oil, and corrosive industrial fluids.

Main Components Material
| Name | Material | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Body / Bonnet | CF8 | CF3 | CF8M | CF3M | WCB | LCB | WC6 | WC9 | C5 |
| Wedge | CF8 | CF3 | CF8M | CF3M | WCB | LCB | WC6 | WC9 | C5 |
| Stem | F304 | F304L | F316 | F316L | 2Cr13 | F304 | F304 | F304 | F304 |
| Stem Nut | Aluminium Bronze | ||||||||
| Packing | PTFE / Flexible Graphite | Graphite | |||||||
| Gasket | PTFE / Metal Wound Gasket | Graphite | |||||||
| Gland | CF8 | CF3 | CF8M | CF3M | WCB | LCB | WC6 | WC9 | C5 |
| Bolt | Stainless Steel | 35CrMoA | |||||||
| Nut | Stainless Steel | 45, 35CrMoA | |||||||
| Handwheel | 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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