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Sharjah, United Arab Emirates
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Cryogenic Gate, Globe & Check Valves








Gate Valves:

Size: 2" to 54" (50 mm to 1350 mm)
ASME Class: 150 to 2500
Design Standards: API 600, ASME B16.34, BS 6364, ISO 28921











Globe Valves:

Size: 2" to 24" (50 mm to 600 mm)
ASME Class: 150 to 600
Design Standards: API 623, BS 1873, ASME B16.34, BS 6364, ISO 28921











Check Valves:

Size: 2" to 36" (50 mm to 900 mm)
ASME Class: 150 to 2500
Design Standards: API 594, BS 1868, ASME B16.34, BS 6364, ISO 28921






Beyond Standards:






















  • Fugitive Emissions - Complies to ISO 15848-1: Endurance class CO2 and Tightness class BH

  • Valves tested at -196 degree C as per BS 6364. In-house facility for valves up to 60

  • SIL3 Safety Integrity Level for Automated Valves

  • Cryogenic valves successfully tested to Shell Design Validation Test Procedure 77/300 and witnessed by Shell Inspectors

  • Optional tests - EN 12567 Annex A (Thermal Shock Test) and Annex B (Endurance Test)





Features that Add Value:






















  • Bonnet extension/ extension column keep packing rings away from cryogenic temperatures, and within its operating range

  • Thermal stabilization treatment conducted on body and obturator to ensure dimensional stability and to avoid distortion during temperature cycles

  • Cavity relief pressure arrangement to prevent thermal effect

  • Seat and disc hardfaced to prevent seizing and galling





Versatile Solutions:























  • Available in a wide grade of metallurgies for a range of low temperature applications.

  • ValvTrac RFID tags for reliable digital traceability




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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.


High Integrity Pressure Protection System (HIPPS) is a Safety Instrumented System (SIS), which by definition is a distinct, reliable system, used to contain catastrophic over-pressurisation and prevent the release of toxic, flammable or explosive chemicals.


HIPPS protects downstream equipment by shutting-off the source of over-pressure within seconds, and is designed to offer at least the same reliability as a safety relief valve or flare system.


Compliance Standards:

  • IEC 61511

  • IEC 61508


Components:

  • Valves - Ball or Butterfly

  • Actuators - Pneumatic, Hydraulic or Electro-hydraulic

  • Pressure Transmitters

  • Logic Solver Solid state or Programmable Electronic Systems (PES)

  • High Integrity Manifold Block


Redundancy:

  • Final control element (1oo2)

  • Solenoid valves (1oo2)

  • Pressure transmitters (2oo3)

  • Logic SolverRedundancy on I/O Cards, Relays, Communication and Power Module

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Valves For Defence & Aerospace

L&T Valves is a strategic partner in the nations defence and aerospace programmes. In the last three decades, the company has developed many mission-critical flow-control solutions for classified projects.


The continued successes in defence and aerospace domains bear witness to the companys capabilities in technology management, new product design and precision manufacture.


Design

The products are designed for long design life by a dedicated team of experts. Finite Element Analysis (FEA, Structural, Thermal and Shock) and Computational Fluid Dynamics (CFD) are employed to fine-tune the designs. Rigorous prototype development and functional qualification tests ensure that the designs are translated into high performance products.


L&T Valves has in-house state-of-the-art capabilities and trained manpower to carry out:

  • Shock test

  • Vibration test

  • Flow test

  • Helium leak test

  • Endurance test


Manufacture

The products are manufactured in an access-controlled precision manufacturing centre equipped with:



  • CNC Machining Centres

  • CNC Horizontal Boring Machines

  • Special purpose

  • Specialised Welding Machines


The products are assembled in a 10K Clean Room, and cleaned and packed using a customised protocol to ensure product integrity is maintained during transit and storage.

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Variable Spray Desuperheater Valves

  • Size ½" to 4" (12.5 mm to 100 mm)
  • ASME Class Class 150 to 4000

The DeFlo VSD integrates the precision and simplicity of a Control Valve into a Desuperheater to attain maximum turn-down, responsiveness and accurate control.


For the maximum efficiency the DeFlo VSD atomizes the cooling fluid at the vena contracta just downstream of the throttling point right at the injection point. The special design of the spray retainer ensures a hollow swirling cone pattern of the atomized fluid.


The total cooling water differential pressure is available at the throttling point hence optimizing the atomizing effect even further.



Salient Feature:

The integrated DeFlo VSD:



  • No Additional cooling water control valve required

  • Class V shut-off available

  • Probe installation which does not influence the piping geometry or velocity of the gas

  • Lower maintenance cost: No additional valve to service, integrated lightweight & compact high performance actuator.

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Contact Us

  • L&T Valves Limited (L&T Valves Limited)
  • Larsen & Toubro Limited 6th Floor, Shk Abdullah Building Al Mahatta, Al Qasimi Street PO Box 71447, Sharjah - UAE
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