Gate Valve
High-Quality Gate Valve for Reliable Flow Control
Product Performance Specification
Gate valves are essential linear motion isolation valves widely adopted in industrial pipeline systems, primarily designed for full opening or full closing fluid control rather than flow regulation. Featuring minimal flow resistance, full bore passage, bidirectional sealing performance and durable structure, they adapt to high-pressure, high-temperature and long-term continuous working conditions in multiple industries.
In the oil and gas industry, gate valves serve core isolation roles in wellhead equipment, long-distance transmission pipelines and storage systems. They reliably cut off crude oil, natural gas and refined fuel medium under severe working conditions, effectively preventing leakage and ensuring pipeline operation safety during routine maintenance and emergency shutdowns.
For power generation plants, these valves are extensively applied in high-temperature steam pipelines, boiler water supply and cooling water circulation systems. High-grade pressure-class gate valves withstand extreme temperature and pressure fluctuations, providing stable and tight shut-off to protect power equipment and guarantee continuous and stable unit operation.
They are also indispensable in chemical, petrochemical, municipal water supply and wastewater treatment fields. Customized corrosion-resistant material options enable safe isolation of conventional and mildly corrosive media. With simple structure and low maintenance cost, gate valves are ideal for large-diameter buried pipelines and urban pipe network systems, delivering long-term reliable isolation performance for industrial and civil fluid conveying systems.
Main Parts Materials
| Component name | Material |
| Valve body | Grey cast iron, ductile iron, cast steel |
| Valve plate | Ductile iron coated with EPDM or NBR |
| Hexagon socket bolts | Carbonization treatment |
| Sealing ring | NBR |
| Valve cover | Grey cast iron, ductile iron, cast steel |
| Valve Stem | Stainless steel(45#,1Cr13,304,416,316) |
| O ring | NBR |
| Thrust bearing | Tin Bronze |
| Bolt | Stainless Steel |
| CAP | ductile iron, cast steel |
| Dust cover | NBR |
| Handwheel (transmission cap) | Cast iron, ductile iron |
Main sizes and connection sizes
Unit:mm
Unit:mm
| NPS(inch) | DN | Face‑to‑Face L | Flange OD D | Bolt‑Circle D1 | RF Dia. D2 | Flange Thickness b‑f | Bolt Quantity‑Hole Z‑Φd |
|---|---|---|---|---|---|---|---|
| 1/2" | DN15 | 108 | 90 | 60.3 | 34.9 | 9.6 | 4‑16 |
| 3/4" | DN20 | 117 | 100 | 69.9 | 42.9 | 11.2 | 4‑16 |
| 1" | DN25 | 127 | 110 | 79.4 | 50.8 | 11.2 | 4‑16 |
| 1‑1/4" | DN32 | 140 | 115 | 88.9 | 63.5 | 12.7 | 4‑16 |
| 1‑1/2" | DN40 | 165 | 125 | 98.4 | 73.0 | 14.3 | 4‑16 |
| 2" | DN50 | 178 | 150 | 120.7 | 92.1 | 15.9 | 4‑19 |
| 2‑1/2" | DN65 | 190 | 180 | 139.7 | 104.8 | 17.5 | 4‑19 |
| 3" | DN80 | 203 | 190 | 152.4 | 127.0 | 19.1 | 4‑19 |
| 4" | DN100 | 229 | 229 | 190.5 | 157.2 | 23.9 | 8‑19 |
| 5" | DN125 | 254 | 254 | 215.9 | 185.7 | 23.9 | 8‑22 |
| 6" | DN150 | 267 | 279 | 241.3 | 215.9 | 25.4 | 8‑22 |
| 8" | DN200 | 292 | 343 | 298.5 | 269.7 | 28.4 | 8‑22 |
| 10" | DN250 | 330 | 406 | 362.0 | 323.9 | 30.2 | 12‑25 |
| 12" | DN300 | 356 | 483 | 431.8 | 381.0 | 31.8 | 12‑25 |
| 14" | DN350 | 381 | 533 | 476.3 | 412.8 | 35.1 | 12‑29 |
| 16" | DN400 | 406 | 597 | 539.8 | 469.9 | 36.6 | 16‑29 |
| 18" | DN450 | 432 | 635 | 577.9 | 533.4 | 39.6 | 16‑32 |
| 20" | DN500 | 457 | 699 | 635.0 | 584.2 | 42.9 | 20‑32 |
| 24" | DN600 | 508 | 813 | 749.3 | 692.2 | 47.7 | 20‑35 |
Packaging
