L&T Valves is a leader in flow-control solutions. The company is a subsidiary of Larsen & Toubro, a technology and engineering conglomerate. L&T Valves leverages its fifty-year heritage of excellence to manufacture valves for key sectors of the economy such as oil & gas, power, petrochemicals, chemicals, water as well as defence and aerospace.
At L&T Valves, we go beyond product standards and process requirements. We leverage our expertise at every stage – from design to manufacture – to enhance customer experience.
Beyond Design
L&T valves are designed by specialists with deep understanding of industry requirements and practices, using state-of-the-art design and analysis software. The company has a series of successful innovations to its credit, including mission-critical solutions for defence and aerospace industries.
- HIPPS
- Smart Valves
- Emergency Shutdown Valves
- Oxygen Service / Clean Service
- Ultra High Pressure
- Cryogenic & Low Emission Valves
Beyond Manufacture
The manufacturing facilities of L&T Valves are equipped with state-of-the-art 5-axis machining centres, CNC machines and facilities for critical tests:
- Cryogenic test, sizes up to 60”
- Pneumatic shell test, up to #2500
- High pressure high temperature test for ultra-high pressure valves
SPEED, our proprietary digital manufacturing platform, ensures 100% visibility and error-free on-time manufacture.
Environment Management System and Occupational Health and Safety Management System meet the requirements of ISO 14001 and OHSAS 18001, respectively.
Beyond Delivery
We enhance customer value by providing support for the entire lifecycle of the valve:
- Installation and commissioning support
- Onsite training, PMC and AMC
- Valve repair/ recertification services
At customer installations, ValvTrac™ provides digital traceability, smarter documentation as well as asset management.
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Special Features & Benefits Enhanced reliability, Longer service life Tight sealing, Consistent low torque Assured shaft sealing One-piece blowout-proof Shaft Reliable Drive - Positive shaft-disc connection Lower resistance to flow - Contoured disc Ease of installation Integral actuator mounting platform -
Special Features & Benefits
Fugitive Emissions - Complies to ISO 15848-1: 2006 Class AH leakage
SIL3 Safety Integrity Level for Automated Valves
The bellows lifecycle is designed as per MSS SP-117
Metal bellows seal the moving stem and increase durability of packed stem seal valves
Bellow provide a barrier between the stem at its point of entry through the pressure boundary and the process fluid within the valve, to eliminate stem leakage
An anti-rotation device is provided in the bonnet to ensure bellow does not get twisted during assembly and disassembly or by vibration
Bellow-sealed valves are usually leak tested using a mass spectrometer to detect leakage rates below 1x10E-06 std.cc/sec.
Bellow-sealed bonnets are backed up with a standard stem packing set and a leakage monitoring port between the bellows and the packing in order to prevent catastrophic release of hazardous fluid in the event of a bellows leak. -
Check Valves- Pressure-Seal mechanism utilizes line pressure to enhance seal; ensures sealing integrity at higher operating pressures. Customised deposition process in F91/ C12A valves to avoid delamination of hardfaced surfaces Live loading of bonnet bolts for F91/ C12A valves
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Special Features & Benefits Pressure-seal Check Valve conforms to ASME B 16.34. CE Marking - Meets requirements of Pressure Equipment Directive 2014/68/EU, Annexure III, Module H Atex - Meets requirements of Atex Directive 94/9/EC (ATEX), category 2 non-electrical equipment Safety Integrity Level for Automated Valves - SIL 3 certification available Valves in intermediate reduce cost of ownership Pressure-Seal mechanism utilizes line pressure to enhance seal; ensures sealing integrity at higher operating pressures. Higher hardfacing thickness (3 mm) to ensure consistent hot hardness Customised deposition process in F91/ C12A valves to avoid delamination of hardfaced surfaces Live loading of bonnet bolts for F91/ C12A valves -
Special Features & Benefits Design complies to API 6D Valves offered with API 6D monogram Fugitive emissions – Complies to ISO 15848-1 Fire safety - Complies to API 607/ ISO 10497 CE Marking - Meets requirements of Pressure Equipment Directive 2014/68/EU, Annexure III, Module H PED Module B1 Design examination certificate (certified by DNV) available Atex - Meets requirements of Atex Directive 94/9/EC (ATEX), category 2 non-electrical equipment SIL3 - Safety Integrity Level SIL3 certification complies to IEC 61508 L&T Valves Double Block & Bleed Plug Valve provides online-verifiable bubble tight sealing and is a safe and reliable replacement to the conventional two-valve system High integrity positive shut-off obtained independent of line pressure, without sealants/ lubricants Mechanical sealing ensuring online-verifiable positive double isolation for critical services Patented operator mechanism enables segments to move towards the seats during valve operation – reduces wear and tear and enhances service life Inbuilt cavity pressure relief system Inline Maintainable Seats -Seats can be renewed without removing the valve from the pipeline (after draining and isolating the line) -
Aquaseal Max is a fabricated steel butterfly valve developed as an alternate for cast iron butterfly and sluice valves in water distribution systems. The highly reliable valve also finds application in power plants, utility and fire water lines, and HVAC systems. Customised Aquaseal Max can be used to handle air, gases and vacuum services. The valve has successfully under gone Proof of Design (POD) test as per AWWA C 504 and AWWA C 516. The key feature of Aquaseal Max Fabricated Steel Butterfly Valve is a Self-energising Disc Seal that uses line pressure to provide assured sealing. Special Features & Benefits Self-energising Disc Seal - Bi-directional bubble-tight sealing Assured Sealing to Atmosphere Lighter and Stronger Construction Lower Torque, Longer Life Maintenance-free Bearings -
Features Floating Ball Valves Size 1/2" to 8" | ASME Class Class 150 to 2500 ISO 17292 | API 6D | API 608 1 Piece / 2 Piece / 3 Piece Construction Full / Reduced bore Soft Seat & Metal seat | Flanged-Screwed-Socket weld- Mirror-finished solid stainless ball
- Fine-grained PTFE seats with Cavity Pressure Relief mechanism
- Blowout-proof stem & Antistatic feature
- High integrity stem sealing – Belleville springs compensate for wear and thermal expansions
- Actuator-mounting flange conforms to ISO 5211
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Features Size 2" to 72" (50 mm to 1800 mm) ASME Class Class 150 to 2500 Design Standard API 600, API 603, ASME B 16.34 Special Features & Benefit Gate Valve design complies to API 600, Edition 13 Offered with API 600 monogram Fugitive Emissions - Complies to API 624 and ISO 15848-1 (<50 ppm / Class AH leakage levels, optional) Gate Valves tested to API 624 at Yarmouth Research Lab, Maine, USA Body gasket leakage <100 ppm observed on eight sizes tested as per API 624 Annexure A Fire Safe - By design and tested to API 607/ ISO 10497 CE Marking - Meets requirements of Pressure Equipment Directive 2014/68/EU, Annexure III, Module H PED Module B1 Design Examination Certificate (certified by DNV) available Atex - Meets requirements of Atex Directive 94/9/EC (ATEX), category 2 non-electrical equipment SIL 3 Safety Integrity Level for Automated Valves Gate valves successfully tested to Shell Design Validation Test Procedure 77/300 and witnessed by Shell Inspectors Robust stem-wedge design connection successfully tested as per API RP 591 Annex B Hardfaced body guides and wedge slots (sizes >24”) Inconel overlay/ cladded options offered -
Special Features & Benefits Gate Valve design complies to API 600, Edition 13 Offered with API 600 monogram Fugitive Emissions - Complies to API 624 and ISO 15848-1 (<50 ppm / Class AH leakage levels, optional) Gate Valves tested to API 624 at Yarmouth Research Lab, Maine, USA Body gasket leakage <100 ppm observed on eight sizes tested as per API 624 Annexure A Fire Safe - By design and tested to API 607/ ISO 10497 CE Marking - Meets requirements of Pressure Equipment Directive 2014/68/EU, Annexure III, Module H PED Module B1 Design Examination Certificate (certified by DNV) available ATEX - Meets requirements of ATEX Directive 94/9/EC (ATEX), category 2 non-electrical equipment SIL 3 Safety Integrity Level certificatation is available Gate valves successfully tested to Shell Design Validation Test Procedure 77/300 and witnessed by Shell Inspectors Robust stem-wedge design connection successfully tested as per API RP 591 Annex B Hardfaced body guides and wedge slots (sizes >24”) Inconel overlay/ cladded options offered -
Special Features & Benefits Pressure-seal Gate Valve design conforms to ASME B 16.34. The design was successfully validated by conducting in-house High Pressure High Temperature (HPHT) Gas Tests on ultra-high pressure valve prototypes. Flow Interruption Test successfully conducted on 8" Class 600 Pressure-seal Gate Valve suitable for Main Stream Isolation Valve (MSIV) service in nuclear power plants - at Areva, Germany. Fugitive Emission - 14" Class 2500 Pressure-seal Gate Valve (test pressure of 431 bar at ambient and 289 bar at 400 degree C) has been tested successfully as per ISO 15848-1, endurance Class CO2 and Tightness Class BH CE Marking – Meets requirements of Pressure Equipment Directive 2014/68/EU, Annexure III, Module H Atex - Meets requirements of Atex Directive 94/9/EC (ATEX), category 2 non-electrical equipment SIL3 Safety Integrity Level for Automated Valves Pressure-seal Gate Valves (up to Class 2500) used in Oil & Gas industry tested to ISO 15848-1 Class BH Pressure-seal Gate Valves successfully tested to Shell Design Validation Test 77/300 and witnessed by Shell Inspectors Valves in intermediate classes reduce total cost of ownership Pressure-Seal mechanism utilizes line pressure to enhance seal; ensures sealing integrity at higher operating pressures. Higher hardfacing thickness (3 mm) to ensure consistent hot hardness Disc guides hardfaced for longer life Customised deposition process in F91/ C12A valves to avoid delamination of hardfaced surfaces Live loading of bonnet bolts for F91/ C12A valves Special high purity graphite packing (seven rings) provided for pressure rating > Class 2500 in Power applications Live loading of bonnet bolts and gland bolts for all valves in F91/ C12A construction -
Globe Valves- Pressure-Seal mechanism utilizes line pressure to enhance seal; ensures sealing integrity at higher operating pressures.
- In-situ hardfaced seat design for all sizes
- Higher hardfacing thickness (3 mm) to ensure consistent hot hardness
- Body-guided Disc offered in all sizes/classes to provide disc stability and avoids vibration of the disc-disc nut assembly. Disc guides hardfaced for longer life
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Special Features & Benefits Pressure-seal Globe Valve design conforms to ASME B 16.34. CE Marking – Meets requirements of Pressure Equipment Directive 2014/68/EU, Annexure III, Module H Atex - Meets requirements of Atex Directive 94/9/EC (ATEX), category 2 non-electrical equipment Safety Integrity Level for Automated Valves - SIL 3 certification available Pressure-seal Globe Valves (up to Class 2500) used in Oil & Gas industry tested to ISO 15848-1 Class BH Pressure-seal Globe Valves successfully tested to Shell Design Validation Test 77/300 and witnessed by Shell Inspectors Valves in intermediate classes reduce total cost of ownership Pressure-Seal mechanism utilizes line pressure to enhance seal; ensures sealing integrity at higher operating pressures. In-situ hardfaced seat design for all sizes Higher hardfacing thickness (3 mm) to ensure consistent hot hardness Body-guided Disc offered in Pressure-seal Globe Valves (all sizes/classes) provides disc stability and avoids vibration of the disc-disc nut assembly Disc guides hardfaced for longer life Customised deposition process in F91/ C12A valves to avoid delamination of hardfaced surfaces Live loading of bonnet bolts for F91/ C12A valves Special high purity graphite packing (seven rings) provided for pressure rating > Class 2500 in Power applications -
High Integrity Pressure Protection System L&T Valves offers a range of customised SIL3-capable High Integrity Pressure Protection Systems (HIPPS) for over-pressure protection In industrial plants, in case of over-pressurisation, the gases released are primarily flared. Flaring and venting of flammable gases pose health and safety hazards and constitute a significant threat to the environment. -
Features L&T Valves launches a smart flow-control solution that enhances plant safety and reliability - L&T Valves Asset Management Program, LAMP. This IoT-ready remote valve performance monitoring system leverages expertise in valve manufacture as well as system design and integration. At the core of LAMP is a time-tested SIL3-capable valve - Ball, Butterfly, DBB Plug, Gate or Globe. Each valve is equipped with ValvTrac™ digital traceability tag that cross-links valve signature to traceability information such as valve test certificates, material test certificates, and installation, operation and maintenance manuals. The valves are upgraded to ‘Smart Valves’ by integrating them with next-generation smart sensors that measure parameters such as torque, leakage, vibration, pressure, temperature and position. The data is relayed real-time to a secure, dedicated cloud computing platform where it is analyzed to provide complete valve health and diagnostic information. Valve users can access information through a secure login, or port the data to the native asset management system through any standard field communication protocol (HART, WirelessHART, Foundation Fieldbus, etc.). To a customer, knowledge is trust; the more he knows about the state of a valve, the more confident can he be about its performance. Thus LAMP takes the guesswork out of valve maintenance and allows customers to transition from preventive maintenance based on thumb rules to predictive maintenance based on real data. -
Automation Solutions Leveraging flow-control expertise that spans five decades and in-house capabilities in system design and integration, L&T Valves offers a comprehensive range of SIL-capable Valve Automation Solutions to meet myriad industry/ process/ customer requirements. Special Features & Benefits Product Range: High Integrity Pressure Protection Systems (HIPPS) Emergency Shut Down Valves (ESDV) Shut Down Valves (SDV) Remote Operated Shutoff Valves (ROSOV) Blowdown Valves (BDV) On/ Off Valves Remote Operated Valves/ Motor-operated Valves -
Special Features & Benefits Taper Plug Design - Lower operating torque compared to lubricated plug valves Plug Adjustment Option - Enables on-line maintenance Avoids downtime Large PTFE Sleeve - Bubble-tight shutoff No metal-to-metal contact Longer service life Positively-locked Sleeve - Reliable sealing through thermal cycles Wiping action between sleeve and plug - Durability in slurry lines Reverse-lip PFA Diaphragm - Self-adjusting dynamic stem seal provides assured sealing to atmosphere Rugged Body - Long and reliable service life No Cavities - Line Fluid does not get entrapped -
Special Features & Benefits Design complies to API 609 Valves offered with API 609 monogram Wide portfolio of Short-pattern and Long-pattern valves Design Validation Test - 12” Class 150 valve successfully completed 10,000 cycles Fugitive emissions - Complies to ISO 15848-1 Endurance Class CO2 and Tightness class AH Fire safe by design and complies to API 607/ ISO 10497 (preferred and non-preferred direction) API RP 591 test conducted on 12” Class 150 TOBV at Element Lab, USA CE Marking - Meets requirements of Pressure Equipment Directive 2014/68/EU, Annexure III, Module H PED Module B1 Design examination certificate (certified by DNV) available Atex - Meets requirements of Atex Directive 94/9/EC (ATEX), category 2 non-electrical equipment SIL3 Safety Integrity Level to IEC 61508 Triple-offset Geometry minimises seat-seal contact – lower operating torque and cost of ownership Compact and light weight as compared to gate valves of the same size Hard faced in-situ body seat and flexible laminar seal ensure bubble tight sealing Single piece Anti blow out shaft Disc contour ensures mimimum turbulence and pressure drop Retainer bolting complies to ASME Section VIII Div 1 Appendix 2 -
L&T Valves Limited Trunnion Mounted Ball Valves are of 2-piece / 3-piece design, with flanged or butt-weld ends. As a standard, the valves are manufactured in bolted body designs, where the joint between the body and the connector is bolted. The bolted body design offers flexibility for dismantling during field service in case of an emergency. Welded body designs, where the joint between the body and connector is welded, are also available on request Features Trunnion-mounted Ball Valves Size 2" to 56" | ASME Class Class 150 to 2500 API 6D | API 608 2 Piece/3 Piece Construction | Full/Reduced bore Side Entry & Top Entry | Soft Seat & Metal seat Bolted & Welded | Flanged & Buttweld Design- Trunnion-mounted Ball Valve design complies to API 6D and can be offered with API 6D monogram
- Wide range of product portfolio in Side-entry and Top-entry designs
- Valves successfully tested to Shell Design Evaluation Test, Procedure 77/300 for temperature -29 to 150 degree C (O rings) and -50 to 150 degree C (Lip seals)
- Vaves for gas services can be supplied with High pressure gas test (Sniffing & Immersion Method)
- Coil springs used for consistent seat loading and lower operating torque
- Double block and bleed (DBB) feature - Valves are designed and tested for automatic cavity relief
- Lip seals are provided for low temperature services & Cryogenic services
- 2/3 stage Stem and 2 stage Body Joint sealing system; Primary O ring and Secondary graphite (in 3 stage stem, thrust washer is primary)
- Where tight shut off is required, Double piston effect (DPE) seats provided for redundancy in sealing