Rising Stem Gate Valve with Metal Sealing Surface
A robust and reliable valve design is essential for demanding industrial applications where leak-proof shutoff is a top priority. Our Metal Seated Rising Stem Gate Valve delivers exceptional performance in high-temperature, high-pressure, and abrasive media services. Constructed with a durable metal-to-metal sealing surface, this valve eliminates the vulnerabilities associated with soft seats, ensuring long service life even under severe thermal cycling and erosive flow conditions. The rising stem configuration provides a clear visual indication of the valve's open or closed position, enhancing operational safety and simplifying maintenance. From steam lines and thermal oil systems to oil and gas production, this valve is built to withstand the toughest challenges while maintaining bubble-tight shutoff.
The Rising Stem Gate Valve with Metal Sealing Surface is engineered with a flexible wedge disc that self-aligns to compensate for body distortion caused by pipeline stress or temperature fluctuations. The hard-faced seat and disc surfaces, typically overlaid with Stellite or similar cobalt-chromium alloys, provide unmatched resistance to galling, scratching, and corrosion. A backseat design protects the stem packing when the valve is fully open, reducing the risk of fugitive emissions. The bolted bonnet joint allows for easy access to internal components during inspection or repair, while the precision-machined stem threads minimize operating torque and prevent backlash. Every unit undergoes rigorous pressure testing and surface finish verification to meet the highest industry standards, making it a trusted choice for power generation, refining, and chemical processing facilities.
Technical Specifications
- Valve type: Rising stem, metal-seated gate valve, bolted bonnet
- Seat and disc surface: Hard-faced with Stellite 6 (CoCr-A) or equivalent, ground to a mirror finish
- Backseat: Integral metal backseat for stem protection in the fully open position
- Stem: High-strength stainless steel, precision rolled threads with anti-backlash design
- Packing: Graphite-based with braided end rings and lantern ring for low emissions
- Bypass and drain connections available upon request
- Design standards: API 600, ISO 10434, ASME B16.34
- End connections: Flanged (RF, RTJ, FF) per ASME B16.5 / B16.47; Butt-weld ends per ASME B16.25
- Operation: Handwheel, gear operator, or electric/pneumatic actuator ready
Dimensional and Pressure Data
| Size (NPS) | Class | Face-to-Face (mm) | Approx. Weight (kg) | Max. Operating Temperature (°C) |
|---|---|---|---|---|
| 2" | 150 | 178 | 22 | 650 |
| 3" | 300 | 282 | 48 | 650 |
| 4" | 300 | 305 | 78 | 650 |
| 6" | 600 | 559 | 178 | 650 |
| 8" | 600 | 660 | 328 | 650 |
| 10" | 900 | 864 | 620 | 650 |
| 12" | 900 | 991 | 890 | 650 |
Note: Custom sizes, higher pressure classes, and special alloy constructions are available upon request. All weights are approximate for flanged valves with handwheel operation.
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