Libra Valves India Pvt. Ltd.
Leading Manufacturer of industrial valves for
Oil & Gas, Petrochemical, Power and Water Treatment
Butterfly Valves
| Parameter | Specification |
|---|---|
| Valve Types | Concentric, Double Offset, Triple Offset |
| Size Range | 2" to 72" (50 mm to 1800 mm) |
| Pressure Class | Class 150, 300, 600, 900, 1500 |
| Design Standard | API 6D, BS EN 593 |
| End Connection | Wafer End, Lugged End, Flanged End (RF/ RTJ), Butt-Weld End |
| Operation | Manual Handwheel, Gear-operated, Electric or Pneumatic Actuated |
Overview
LIBRA Valves India Pvt. Ltd. manufactures high-performance Butterfly Valves engineered for precise flow control, reliable shutoff, and long service life in demanding process applications. Our valves comply with API 609 and BS EN 593 standards and are widely used across Oil & Gas, Petrochemical, Refinery, Power, Chemical, Water Treatment, Marine, and HVAC industries.
Available in Wafer, Lug, and Double Flanged configurations, LIBRA Butterfly Valves provide compact, lightweight solutions for large-diameter pipelines and are suitable for both low-pressure utilities and high-pressure process systems.
Design Highlights
LIBRA Butterfly Valves are engineered for high reliability, smooth operation, and long service life across demanding industrial applications. Designed as per API 609 and BS EN 593, these valves combine compact construction with advanced sealing and safety features.
- Triple-Eccentric / High-Performance Design – Ensures zero leakage, precise shutoff, and long cycle life.
- Wafer, Lug, and Double Flanged Options – Flexible installation for various pipeline configurations.
- Lightweight & Compact Body – Minimizes pipeline load and reduces installation time.
- Anti-Blowout Stem – Enhances operational safety under high-pressure conditions.
- Fire-Safe Construction – Certified for emergency fire protection (API 607 / API 6FA).
- Low-Emission Seals – ISO 15848 compliant to minimize fugitive emissions.
- High-Performance Seat Materials – EPDM, NBR, Viton, PTFE, and metal-seated options for high-temperature or abrasive service.
- ISO 5211 Mounting Pad – Allows direct mounting of pneumatic or electric actuators.
Versatile Solutions
LIBRA Butterfly Valves are engineered to provide maximum flexibility and reliable performance across a wide range of industrial applications.
- Design Options:
- Wafer, Lug, and Double Flanged types
- Triple-Eccentric / High-Performance Butterfly Valves
- Fire-Safe, Cryogenic, and Metal-Seated designs
- Pressure Ratings: Class 150 to Class 1500 (suitable for low-pressure utilities to high-pressure pipelines)
- Temperature Range: –196°C (Cryogenic LNG/LPG) to +420°C (High-Temperature Steam & Process Fluids)
- Size Range: 2” to 72” (DN 50 to DN 1800)
- Materials: Carbon Steel, Stainless Steel, Duplex, Super Duplex, Alloy Steel, Inconel, Monel, NACE-compliant trims
- Seal Variants: Soft seat (EPDM, NBR, Viton, PTFE) or Metal seat for severe service
- Actuation Options: Manual, Gear, Electric, Pneumatic, Hydraulic
- Coatings & Corrosion Protection: Epoxy, Polyurethane, FBE, PTFE linings, Inconel overlays, and other special surface treatments
- Automation Ready: ISO 5211 mounting pad for actuators with accessories like limit switches, positioners, and gearboxes
- Testing & Compliance: 100% tested per API 598 / API 609 / BS EN 593 for hydrostatic strength and seat leakage
- Specialized Configurations: Anti-static, double block & bleed (DBB), emergency sealant injection, and severe-service options
Beyond Standards
LIBRA Butterfly Valves are engineered not only to meet API 609 and BS EN 593 standards but to exceed industry requirements for performance, durability, and operational reliability. Advanced design features and precision manufacturing ensure long-term efficiency in critical industrial applications.
- Enhanced Sealing Integrity – Triple-eccentric or high-performance seat designs provide zero leakage even under high pressure and temperature fluctuations.
- Optimized Disc & Seat Geometry – Reduces operating torque for smoother valve actuation and longer life.
- High Cycle Life – Suitable for frequent operation in pipelines requiring continuous duty.
- Advanced Corrosion Protection – Multi-layer coatings and surface treatments extend service life in aggressive media.
- Severe Service Options – Fire-safe, metal-seated, and cryogenic designs available for extreme conditions.
- Precision Machined Components – CNC-machined parts ensure consistent quality, interchangeability, and smooth operation.
- Custom Engineering Flexibility – Valves can be tailored to meet special media, pipeline, or client-specific requirements.
Features That Add Value
LIBRA Butterfly Valves are designed to deliver long-term operational efficiency, reliability, and reduced maintenance costs across demanding industrial applications.
- Low Operating Torque – Optimized disc and seat design reduces actuator size and energy requirements.
- Durable Seat Materials – EPDM, NBR, Viton, PTFE, or metal-seated options ensure extended service life.
- Easy Maintenance – Modular body and seat design allows inspection or replacement without removing the valve from the line.
- Bubble-Tight Shutoff – Precision-machined disc and seat surfaces provide reliable zero-leakage sealing.
- Versatile Installation – Wafer, Lug, and Double Flanged configurations allow seamless integration into existing pipelines.
- Automation Ready – ISO 5211 pad supports direct mounting of pneumatic, electric, or hydraulic actuators.
- Fire-Safe & Anti-Static Options – Enhance safety in critical process and hydrocarbon applications.
- Corrosion & Abrasion Protection – Coatings and special trims ensure performance in aggressive media.
- Wide Media Compatibility – Suitable for water, chemicals, gases, steam, and slurry applications.
- Cost-Effective Lifecycle – Strong materials, advanced sealing, and corrosion protection reduce total cost of ownership.
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
LIBRA Butterfly Valves are designed and manufactured to meet global standards and ensure reliable performance, safety, and regulatory compliance across critical industrial applications.
- API 609 & BS EN 593 Compliance – Designed and tested as per international standards for butterfly valve construction, pressure ratings, and performance.
- Fire-Safe Certification – API 607 / API 6FA compliant for emergency fire situations.
- ISO 9001:2015 Certified – Ensures a robust quality management system covering design, manufacturing, inspection, and customer support.
- ISO 14001:2015 Certified – Guarantees environmentally responsible manufacturing practices with controlled waste management and resource optimization.
- ISO 45001:2018 Certified – Ensures safe and healthy working environments with strong occupational health and safety controls.
- SIL-3 (Safety Integrity Level 3) – Confirms high functional safety performance for automated valve operation in critical shutdown systems.
- Third-Party Approvals – Valves are routinely tested and certified by TPI, EIL, BV, DNV, TUV, Lloyd’s, and other reputed agencies as per project requirements.
- Full Material & Test Traceability – Every valve includes documentation, heat number traceability, and test certificates to meet global audit and compliance norms.
Applications
LIBRA Butterfly Valves are widely used across industries where flow control, reliable shut-off, and durability are critical. Their robust design, fire-safe options, and versatile materials make them suitable for demanding conditions.
- Oil & Gas Pipelines – Isolation, flow control, and emergency shut-off in crude oil, natural gas, and condensate lines; suitable for wellheads, gathering stations, offshore platforms, and pig launcher/receiver systems.
- Refineries & Petrochemical Plants – Process lines, utility systems, and steam or chemical isolation in units like FCC, DHDS, CCR, distillation columns, and reactors.
- Power & Energy – Cooling water, steam, condensate, and auxiliary lines in thermal, gas, nuclear, and renewable power plants.
- Water & Wastewater Treatment – Pump discharge lines, raw water intake, desalination plants, RO systems, and irrigation networks.
- Chemical & Fertilizer Plants – Handling corrosive, acidic, or hazardous media in reactors, feed lines, and continuous process operations.
- Marine & Offshore Applications – Seawater, ballast, bilge, cooling water, and firewater systems; corrosion-resistant material options available.
- HVAC & Utility Systems – Chilled water, air handling, compressed air lines, and general utility pipelines.
- Cryogenic / LNG / LPG Service – Special extended-bonnet designs for low-temperature pipelines, storage, and processing units operating down to –196°C.
Optional Features
LIBRA Butterfly Valves can be customized with a wide range of optional features to meet specific service requirements, harsh operating conditions, and special industrial standards.
- Bypass / Equalizing Connections Optional bypass or equalizing connections are available to ensure pressure balancing, smooth valve operation, and safer maintenance procedures, especially in high-pressure pipelines.
- Drain & Vent Ports Body drain and vent ports allow for flushing, testing, or removal of trapped pressure during shutdown or maintenance, improving operational safety and efficiency.
- Extended Stem / Cryogenic Bonnet For LNG, LPG, and other low-temperature applications, extended stems and cryogenic bonnets protect the valve stem and packing while ensuring safe and reliable operation in extreme cold conditions.
- Fire-Safe Construction Butterfly valves can be supplied with fire-safe designs certified to API 607 / API 6FA, ensuring sealing integrity and reliable operation even during accidental fire exposure.
- Anti-Static Devices Anti-static balls and stems prevent static charge accumulation, providing enhanced safety in hydrocarbon or flammable media applications.
- High-Temperature & Metal-Seated Options For severe-service applications, metal-to-metal seating, hard coatings, and high-temperature designs are available to withstand abrasive media, elevated temperatures, and challenging process conditions.
- Actuation Options Valves can be supplied with a variety of actuation methods, including manual, gear, electric, pneumatic, or hydraulic operation, along with accessories such as limit switches, positioners, and control valves for automation.
- Low-Emission Packing Stem sealing systems compliant with ISO 15848 / API 624 are available to minimize fugitive emissions, supporting environmental compliance and reducing operational hazards.
- Double Block & Bleed (DBB) Functionality DBB-configured valves provide critical isolation, inspection, and process safety, ensuring positive shut-off on both upstream and downstream sides.
- Flush Ports & Clean-Out Connections Special ports and clean-out connections are designed for slurry, polymer, or viscous fluid services, allowing easy cleaning and maintenance of the valve cavity.
- Special Coatings & Linings Custom coatings and linings such as FBE, epoxy, PTFE, hard chrome, tungsten carbide, and ENP provide enhanced corrosion and abrasion resistance in aggressive environments.
- Severe-Service Trims Special trims and materials compliant with NACE MR0175 / ISO 15156 are available for sour service or highly corrosive hydrocarbon environments, ensuring safe and reliable operation.