Libra Valves India Pvt. Ltd.
Leading Manufacturer of industrial valves for
Oil & Gas, Petrochemical, Power and Water Treatment
Gate Valves
| Specification | Details |
|---|---|
| Valve Types | Bolted Bonnet Gate Valves / Pressure Seal Gate Valve |
| Size Range | 2" to 72" (50 mm to 1800 mm) |
| Pressure Class | Class 150 to 2500 |
| Design Standard | API 600, API 603, ASME B16.34, BS 1414, ISO 10434 |
| End Connection | ASME B16.5, ASME B16.25, ASME B16.47 |
| Operation | Handwheel, Gear-Operated, Electric or Pneumatic Actuated |
Overview
LIBRA Valves India Pvt. Ltd. is a leading manufacturer of industrial valves serving the Oil & Gas, Petrochemical, Power, and Water Treatment industries.
Our Gate Valves are designed and manufactured to meet the highest standards of performance, safety, and reliability.
Available in both Bolted Bonnet and Pressure Seal Bonnet configurations, these valves provide superior shut-off capabilities, minimal pressure drop, and long-term operational durability across a wide range of pressures and temperatures
Our Gate Valves are designed and manufactured to meet the highest standards of performance, safety, and reliability.
Available in both Bolted Bonnet and Pressure Seal Bonnet configurations, these valves provide superior shut-off capabilities, minimal pressure drop, and long-term operational durability across a wide range of pressures and temperatures
Design Highlights
- Full Bore Construction: Minimizes pressure drop across the valve, ensuring uninterrupted flow.
- Rising Stem with OS&Y Design: Ensures easy visual indication of valve position and improves maintenance safety.
- Renewable Seat Rings: Allow on-site replacement for reduced downtime and cost-effective maintenance.
- Backseat Arrangement: Enables repacking of gland under line pressure (for bolted bonnet type).
- Integral Guide System: Accurately guides the wedge during operation, reducing wear and preventing vibration.
- Pressure Seal Bonnet Design: Self-energizing sealing system that improves tightness as internal pressure increases.
Versatile Solutions
- Pressure Range: Up to 4500 psi
- Temperature Range: -46°C to +649°C (-50°F to +1200°F)
- End Connection Options: Flanged RF / RTJ, Butt Weld (BW), Socket Weld (SW)
- Mounting Standards: ISO 5210 / ISO 5211 for actuator compatibility
- Sizes Available: DN 50 mm to DN 1800 mm (2” to 72”)
- Testing: 100% valves tested as per API 598 (Hydrostatic, Pneumatic, & Seat Leak Test)
- Painting & Coating: Epoxy / Polyurethane / Zinc Phosphate coating for corrosion resistance
Beyond Standards
LIBRA Valves’ Gate Valves are engineered to exceed global standards through superior design, precision machining, and advanced testing.
Bolted Bonnet Design
- Traditional and proven construction suitable for low to medium pressure ranges.
- Body-bonnet joint sealed with spiral wound gasket or ring joint.
- Ideal for refinery, chemical, and water service applications.
Pressure Seal Bonnet Design
- Self-tightening body-bonnet joint for high-pressure and high-temperature service.
- Suitable for thermal power plants, high-pressure steam lines, and hydrocarbon systems.
- Compact, lightweight design compared to conventional bolted bonnet types at higher pressure classes.
Features That Add Value
- High Integrity Sealing: Precision-lapped, hard-faced (Stellite #6 or equivalent) seating surfaces for leak-tight closure.
- Flexible Wedge Design: Accommodates thermal expansion and seat distortion while maintaining sealing efficiency.
- Material Versatility: Available in Carbon Steel, Alloy Steel, Stainless Steel, Duplex, and Super Duplex grades.
- Stem Material: Forged and ground stems with fine finish to ensure smooth operation and extended packing life.
- Pressure-Temperature Endurance: Designed to operate reliably from -46°C to +649°C (-50°F to +1200°F).
- Actuation Options: Manual, Gear, Electric, Pneumatic, or Hydraulic actuation available upon request.
- Fugitive Emission Compliance: Meets ISO 15848 / API 624 standards for low emissions.
- Fire-Safe Construction: Certified as per API 607 / API 6FA for fire safety.
Certifications & Compliance
- Pressure Range: Up to 4500 psi
- Temperature Range: -46°C to +649°C (-50°F to +1200°F)
- End Connection Options: Flanged RF / RTJ, Butt Weld (BW), Socket Weld (SW)
- Mounting Standards: ISO 5210 / ISO 5211 for actuator compatibility
- Sizes Available: DN 50 mm to DN 1800 mm (2” to 72”)
- Testing: 100% valves tested as per API 598 (Hydrostatic, Pneumatic, & Seat Leak Test)
- Painting & Coating: Epoxy / Polyurethane / Zinc Phosphate coating for corrosion resistance
Applications
LIBRA Gate Valves are used across a wide range of industries where reliable isolation is critical:
- Oil & Gas Pipelines – for crude oil, natural gas, and condensate isolation
- Refineries & Petrochemical Plants – process isolation and utility systems
- Thermal & Nuclear Power Plants – main steam lines, boiler feed, and turbine systems
- Chemical & Fertilizer Plants – corrosive and high-temperature fluids
- Water & Wastewater Treatment Plants – flow control and isolation
- Marine & Offshore Installations – seawater, ballast, and cooling systems
Optional Features
- Extended stem for underground service
- Locking arrangement for manual valves
- Bypass arrangement for equalizing pressure
- Drain & vent connections on body or bonnet
- Stem sealing with live-loading springs
- Position indicators for actuator-mounted valves
- NACE MR0175 / ISO 15156 compliance for sour service
- Cryogenic extensions for low-temperature applications