API Flanged Gate Valve
The API Flanged Gate Valve is designed in accordance with API 6D / ISO 10434 standards, offering reliable shut-off solutions for oil, gas, chemical, and industrial pipeline systems. Constructed from high-strength forged or cast steel, the valve delivers exceptional pressure resistance and corrosion durability, ensuring stable operation under high-temperature and high-pressure conditions.
Featuring a wedge-shaped gate design, the valve provides smooth operation and dependable sealing, suitable for bidirectional shut-off. The stem is available in rising or non-rising designs, paired with a variety of sealing materials (PTFE, flexible graphite, or metal), ensuring long-term leak-free performance. Valves can be equipped with manual, gearbox, or pneumatic/electric actuators, allowing both local and automated operation.
With a robust structure and easy maintenance, this valve is ideal for high-pressure pipelines, critical processes, and industrial systems, offering a reliable solution for fluid shut-off applications.
Pressure Rating: 150 LB – 2500 LB, 1.0 – 42.0 MPa
Size Range: 1/2″ – 60″ (DN 15 – DN 1500)
Working Temperature: -29°C to 425°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 valve is designed and manufactured in accordance with advanced international standards, ensuring reliable sealing performance and stable operation.
Optimized structural design with a compact layout and clean appearance, providing both functional reliability and visual consistency for industrial installations.
A flexible wedge structure is adopted. For large-diameter valves, rolling bearings are integrated to reduce operating torque and ensure smooth and easy operation.
A wide selection of body, sealing, packing, and gasket materials is available. Material combinations can be customized according to actual working pressure, temperature, and service media.
Flange dimensions and sealing face types comply with international and domestic piping standards, ensuring compatibility with various pipeline systems and meeting diverse engineering requirements.

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 |
Why Choose YAYE




