Libra Valves India Pvt. Ltd.
Leading Manufacturer of industrial valves for
Oil & Gas, Petrochemical, Power and Water Treatment
On-Off Valves
| Parameter | Specification |
|---|---|
| Valve Types | Ball Valves / Butterfly Valves / Gate Valves / Plug Valves |
| Size Range | ½” to 72” (DN 15 to DN 1800) |
| Pressure Class | Class 150, 300, 600, 900, 1500, 2500 |
| Design Standards | API 6D / API 608 / API 600 / API 609 / API 599 / ASME B16.34 |
| End Connections | Flanged (RF / RTJ), Butt-Weld (BW), Socket-Weld (SW), Threaded |
| Operation | Electric / Pneumatic / Hydraulic / Gas Powered |
Overview
LIBRA Valves India Pvt. Ltd. manufactures a comprehensive range of high-performance On-Off Valves, engineered for reliable isolation, bubble-tight shut-off, and long operational life in demanding industrial applications.
Our Ball, Butterfly, Gate, and Plug Valves are designed and manufactured in accordance with internationally recognized standards including API, ASME, and ISO, ensuring superior safety, reliability, and performance. LIBRA On-Off Valves are widely used across Oil & Gas, Petrochemical, Refinery, Power, Chemical, Fertilizer, LNG, Marine, and Water Treatment industries. Designed for both manual and automated operation, these valves deliver low torque performance, minimal pressure drop, and consistent sealing integrity.
Design Highlights
LIBRA On-Off Valves are engineered for precision isolation, operational safety, and long-term durability across critical industrial applications.
- Bubble-Tight Shut-Off Precision-machined and lapped sealing surfaces ensure zero leakage, maintaining process integrity even under high pressure and temperature variations.
- Low Operating Torque Optimized internal flow paths, seat geometry, and bearing support reduce friction, enabling smooth operation, smaller actuator sizing, and lower energy consumption.
- Full & Reduced Bore Options Available to suit process requirements — full bore for minimal pressure drop and reduced bore for compact, economical designs.
- Fire-Safe Construction Certified as per API 607 / API 6FA / ISO 10497, ensuring valve integrity and sealing performance during fire exposure.
- Anti-Blowout Stem Design Blowout-proof stem construction enhances operator safety by preventing stem ejection under line pressure.
- Low Fugitive Emission Sealing Advanced stem packing systems comply with ISO 15848 / API 624, minimizing emissions and supporting environmental compliance.
- Corrosion-Resistant Materials Wide material selection including Carbon Steel, Stainless Steel, Duplex, Super Duplex, and Alloy Grades, suitable for corrosive, abrasive, and sour service media.
- Automation-Ready Design Standardized ISO 5211 / ISO 5210 mounting interfaces enable direct actuator integration for pneumatic, electric, or hydraulic automation.
- Wide Temperature Capability Engineered for service from cryogenic (–196°C) to high-temperature (+815°C) depending on valve type and materials.
Versatile Solutions
LIBRA On-Off Valves are designed to provide maximum flexibility, reliability, and performance across a wide spectrum of industrial applications and service conditions.
- Valve Designs Ball Valves / Butterfly Valves / Gate Valves / Plug Valves — each engineered for specific isolation, pressure, and flow control requirements.
- Pressure Ratings Available from Class 150 to Class 2500, suitable for low-pressure utilities to critical high-pressure process and pipeline systems.
- Temperature Range Engineered for extreme service conditions from –196°C (cryogenic) to +815°C (high-temperature applications) depending on valve type and materials.
- Size Range From DN 15 to DN 1800 (½” to 72”), covering instrumentation lines to large-diameter transmission pipelines.
- End Connections Flanged (RF / RTJ) / Butt Weld (BW) / Socket Weld (SW) / Threaded / Hub Ends — ensuring compatibility with diverse piping standards.
- Material Options Carbon Steel / Stainless Steel / Duplex / Super Duplex / Alloy Steel / Inconel / Monel / Hastelloy — for corrosive, abrasive, sour, and high-temperature services.
- Sealing Options Soft-Seated / PTFE / RPTFE / Devlon® / PEEK™ / Nylon / Metal-Seated for severe-service, high-temperature, and abrasive media.
- Coatings & Surface Protection Epoxy / Polyurethane (PU) / Fusion Bonded Epoxy (FBE) / ENP / Hard-Facing / Specialty Overlays — enhancing durability in aggressive environments.
- Operation Modes Manual / Lever / Handwheel / Gear-Operated / Electric / Pneumatic / Hydraulic — adaptable to both manual and automated systems.
- Testing & Inspection 100% tested as per API 598 / API 6D / API 609, including hydrostatic, pneumatic, and seat leakage tests.
Beyond Standards
LIBRA On-Off Valves are engineered not just to meet but to exceed global industry standards through advanced design, precision manufacturing, and rigorous quality assurance.
- Enhanced Sealing Integrity Advanced seat and sealing technologies ensure reliable zero-leakage isolation, even under fluctuating pressure, temperature, and flow conditions.
- Extended Service Life Precision machining, superior surface finishes, and optimized material pairing significantly reduce wear, erosion, and friction, extending valve longevity.
- Optimized Torque Performance Refined internal geometry and low-friction components deliver reduced operating torque, enabling smaller actuators and lower operational energy costs.
- Advanced Corrosion Protection Multi-layer protective systems including Epoxy, Polyurethane (PU), Fusion Bonded Epoxy (FBE), ENP, and specialty overlays enhance durability in aggressive environments.
- Severe-Service Capability Available in metal-seated, fire-safe, cryogenic, abrasive-service, and high-temperature designs, ensuring reliability under extreme operating conditions.
- High Cycle Durability Engineered for frequent operation and automated systems, supporting long cycle life in critical isolation and control applications.
- Precision CNC Machining Ensures tight dimensional tolerances, component interchangeability, and consistent product performance.
- Custom Engineering Flexibility Tailored designs for non-standard sizes, special media, extreme temperatures, and client-specific requirements.
Advanced Engineering Features
- Precision CNC Machining Ensures tight dimensional tolerances, component interchangeability, and consistent sealing performance.
- High-Integrity Seat Design Soft-seated, PTFE-based, Devlon®, PEEK™, or metal-seated configurations available for severe service applications.
- Robust Body Construction Designed with enhanced safety margins to withstand pipeline stresses, vibration, and thermal expansion.
- Anti-Static Protection Integrated anti-static devices prevent electrostatic charge buildup, improving safety in hydrocarbon & flammable media.
- Optimized Flow Characteristics Engineered to minimize turbulence, cavitation risk, and pressure losses.
- Bidirectional Sealing Capability (Design Dependent) Provides reliable shut-off in both flow directions where applicable.
- Maintenance-Friendly Designs Top-entry / 3-piece / modular constructions allow in-line maintenance, reducing downtime.
- Cavity Pressure Relief Systems (Valve Type Dependent) Protect against over-pressurization caused by thermal expansion.
- Heavy-Duty Bearings & Bushings Enhance operational smoothness and extend cycle life, particularly in large-diameter & high-pressure valves.
- Severe-Service Configurations Available with hard-facing, metal seating, special coatings, cryogenic extensions, and high-cycle trims.
Features That Add Value
LIBRA On-Off Valves are engineered to deliver long-term operational efficiency, enhanced reliability, and minimized lifecycle cost across demanding industrial applications.
- Low Operating Torque Optimized internal geometry and low-friction sealing systems reduce actuation effort, allowing smaller actuators, lower energy consumption, and smoother valve operation.
- Bubble-Tight Shut-Off Precision-lapped sealing surfaces ensure consistent zero-leakage performance, protecting process integrity and preventing product loss.
- Extended Seat & Seal Life Advanced seat materials and wear-resistant trims significantly reduce erosion, abrasion, and deformation, extending maintenance intervals.
- Reduced Maintenance Requirements Robust design, high-grade surface finish, and superior material pairing result in lower wear rates and reduced service frequency.
- Leak-Free Body Joint Design Precision machining combined with high-integrity gasket systems minimizes external leakage risk, enhancing operational safety.
- Low Emission Compliance Live-loaded stem packing and advanced sealing technologies comply with ISO 15848 / API 624, supporting environmental regulations.
- Reliable Automation Interface Standardized ISO 5211 / ISO 5210 mounting pads ensure seamless integration with pneumatic, electric, or hydraulic actuators.
- Corrosion & Abrasion Resistance Wide material and coating options enable reliable performance in corrosive, erosive, slurry, and sour service environments.
- Cost-Effective Total Ownership Enhanced durability, low torque requirements, and reduced downtime lead to lower Total Cost of Ownership (TCO).
Certifications & Compliance
LIBRA On-Off Valves comply with:
- API / ASME / ISO Standards
- API 598 (Testing)
- Fire-Safe – API 607 / API 6FA
- Fugitive Emission – ISO 15848 / API 624
- ISO 9001:2015
- ISO 14001:2015
- ISO 45001:2018
- SIL-3 (Where Applicable)
- NACE MR0175 / ISO 15156 (Optional)
- Third-Party Inspection (EIL / BV / TUV / DNV / LR)
- Full Material Traceability
Applications
LIBRA On-Off Valves are widely used in:
- Oil & Gas Pipelines
- Refineries & Petrochemical Plants
- Power Generation Plants
- Chemical & Fertilizer Industries
- Water & Wastewater Treatment
- Marine & Offshore Installations
- LNG / Cryogenic Applications
Optional Features
- Locking Arrangement
- Extended Stem / Cryogenic Bonnet
- Bypass / Equalizing Connection
- Drain & Vent Ports
- Live-Loaded Stem Sealing
- Fire-Safe Design
- Anti-Static Device
- Metal-Seated / Severe-Service Trim
- Low-Emission Packing
- DBB / DIB Configuration (Design Dependent)
- Special Coatings & Linings
- NACE Compliance