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Explore the Essentials
- API 600 Gate Valves
- API 603 Gate Valves
Gate Valve : Reliable Shut-off Solution for Fluid Control
Size Range
- Pressure Seal: 2” to 48” (DN 50 mm to DN 1200 mm)
- Bolted Bonnet: 2” to 72” (DN 50 mm to DN 1800 mm)
Pressure Ratings
- Pressure Seal: ASME Class 600, 900, 1500, 2500
- Bolted Bonnet: ASME Class 150, 300, 600, 900, 1500, 2500
Design Standards
- API 600
- ASME B16.34
- BS 1414
- ISO 10434
End Connection Types
LIBRA Gate Valves are available in multiple end connection configurations:
- Flanged (RF/RTJ): ASME B16.5 – Raised Face (RF) and Ring Type Joint (RTJ)
options - Butt-Weld: ASME B16.25 – Suitable for welded pipeline systems
- Custom End Types: Available on request for project-specific needs
Operation Types
Valves can be supplied with different operation mechanisms as per customer or project requirement:
- Manual Operation – With handwheel or chain wheel
- Gear Operated – Bevel gear arrangement for ease in high-torque applications
- Electric Actuator – For remote/automated control
- Pneumatic Actuator – For fast-action and process integration
- Hydraulic Actuator – Ideal for high-pressure and subsea applications
- Motorized & SCADA Compatible – Integrated with control systems for industrial
automation
Key Features
- Flexible Wedge Design: One-piece wedge compensates for pipe distortion and
thermal shifts - Hard-Faced Sealing: With Stellite #6 or equivalent for long-lasting seat and disc
integrity - Superior Bonnet Types:
- Pressure Seal – Compact & self-energizing for high-pressure systems
- Bolted Bonnet – Easy to dismantle for frequent maintenance
Service Parameters
- Pressure: Up to 4500 psi
- Temperature: -46°C to +649°C (-50°F to +1200°F)
- Applications:
- Thermal & Nuclear Power
- Oil & Gas (Onshore & Offshore)
- Refinery & Petrochemicals
- Steam, Water & Slurry Systems
- Desalination & Marine
Advantages
- Zero-Leakage Design with precision-machined, metal-seated sealing
- RTJ Face Option: Ideal for high-pressure, high-temperature flange sealing
- Wide Actuation Compatibility: Ready for manual or automatic operation
- Reduced Maintenance Downtime with easy-access bonnet designs
- Global Standard Compliance: Suitable for international tenders and EPC
requirements - Custom-Built for Critical Service with exact trim and material selection
| Material Type | Grades | Application Suitability |
|---|---|---|
| Carbon Steel | ASTM A216 Gr. WCB / WCC / LCB | General oil & gas, power, water services |
| Alloy Steel | ASTM A217 Gr. WC6 / WC9 / C5 / C12 | High-temperature steam, thermal & nuclear plants |
| Stainless Steel | ASTM A351 Gr. CF8 / CF8M / CF3 / CF3M | Corrosive media, chemical plants, refineries |
| Duplex Steel | ASTM A995 Gr. CD3MN / CE3MN | Seawater, offshore, desalination, aggressive chemicals |
| Bronze | ASTM B62 / B148 Gr. C95800 | Marine, brine, low-pressure water systems |
| Other Alloys | Monel, Inconel, Hastelloy (on request) | Special corrosive and high-nickel environments |
