L&T Valves offers Gate, Globe & Check Valves for cryogenic services suitable for temperatures as low as -196C (-321 degree F).

The valves are approved by the world-leaders in oil & gas and have a reputation for reliable performance in critical services, across the globe.

These valves are manufactured by L&T and its wholly-owned subsidiary, L&T Valves Limited (Formerly Audco India Limited). The state-of-the-art manufacturing infrastructure includes one of the largest in-house cryogenic test facilities in the world, capable of testing valves of sizes up to 60.

Gate Valves

• API 600/ ISO 10434/ BS 6364
• 2" to 54"
• ASME class 150 to 2500

Salient Features:

• Extended bonnet with vapour column length as per BS 6364/ customer requirement - Packing protected from cryogenic temperatures, efficiency not compromised.
• Fully hard-faced trim - Disc, seat-rings and back-seat hard-faced for longer service life.
• Body and bonnet - Cast with uniform sections, precision machined.
• Body: Straight through port without recesses except in the seat area - Minimum resistance to flow, turbulence and erosion.
• Flex wedge: Guide slots in the wedge engage with integral guide ribs in the body, Stem-to-wedge contact close to wedge centre - Better sealing, smoother operation.
• Seal-welded seat ring - Eliminates leakage path between seat ring and body, does not loosen up due to temperature fluctuations or vibration.
• Stem - One-piece construction with forged T-head - Long service life, smoother operation.

Globe Valves

• BS 1873/ BS 6364
• 2" to 12"
• ASME class 150 to 2500

Salient Features:

• Extended bonnet with vapour column length as per BS 6364/ customer requirement - Packing protected from cryogenic temperatures, efficiency not compromised.
• Fully hard-faced trim - Disc, seat-rings and back-seat hard-faced for longer service life.
• Body and Bonnet - Cast with uniform sections, precision machined.
• In-situ hard-faced body seat - Eliminates leakage path between seat ring and body.
• Guided plug-type disc, Free-floating stem-disc connection - Uniform seating.

Check Valves

• BS 1868/ BS 6364
• 2" to 36"
• ASME class 150 to 2500

Salient Features :

• Fully hard-faced trim - Disc and seat-rings hard-faced for longer service life.
• Body and bonnet - Cast with uniform sections, precision machined.
• Body: Permits full swing of disc on downstream side - Lower flow resistance and disc erosion.
• Disc: Internally-hinged - No opening on the body, higher integrity.
• Disc secured to hinge using lock nut and pin.
• Disc free to rotate to avoid localized wear.

L&T Valves manufactures a variety of Gate, Globe & Check Valves in forged construction to suit a spectrum of applications.

Valves for Power

These valves are manufactured by L&T and its wholly-owned subsidiary, L&T Valves Limited (Formerly Audco India Limited) which focuses on the requirements of the power sector. The facility is the only Indian valve plant authorised to offer valves with ASME N and NPT stamps.

L&T forged steel valves conform to ASME B16.34 and the range comprises Pressure-seal Gate, Globe & Check Valves in ASME classes up to 4500.

Small-bore Forged Steel Valves

These valves are available in to 2 in straight pattern and Y-pattern.

The straight pattern Gate, Globe & Check Valves are available in ASME classes up to 800 and the Y-pattern range in classes 1500 and 2500.

Bellow-sealed and Cryogenic gate and globe valves are also offered.

L&T Valves offers customised SIL-3 capable HIPPS for over-pressure protection leveraging expertise of five decades in flow-control and system integration.

High Integrity Pressure Protection System (HIPPS) is a Safety Instrumented System (SIS), which by definition, is a distinct, reliable system used to safeguard a process to prevent a catastrophic release of toxic, flammable, or explosive chemicals. The system closes the source of over-pressure within two seconds and has at least the same reliability as a safety relief valve or a flare system.

A typical HIPPS system comprises the following:

• Pressure Sensors
• Logic Solver
• Final Element (Actuated Valve) which performs the emergency closure action via a Solenoid Operated Valve (SOV) to bring the process to a safe state.

Final elements (Actuated Valves) are accorded the highest priority in a HIPPS loop as studies suggest that they account for 50% of safety loop failures historically and calculations suggest that their contribution to PFD (avg) is the higher than that of sensors and logic solver. In short, performance of HIPPS is highly dependent on the integrity of the valve.

L&T Valves, with expertise in flow-control that spans five decades, is ideally equipped to design and manufacture HIPPS systems. L&T HIPPS can be offered with Trunnion-mounted Ball Valves (TMBV) or Triple-offset Butterfly Valves (TOBV) as final elements. L&T HIPPS can be supplied as a ready-to-fit skid-mounted system.

L&T Valves manufactures a wide variety of Gate, Globe & Check Valves in pressure-seal design.

The valves are approved by the global majors in power and oil & gas and have a reputation for reliable performance in critical services, across the globe.

Pressure seal range is available in ASME classes from 600 to 4100. The valves conform to ANSI B16.34 and are offered with fully hard-faced seats in carbon steel, stainless steel and alloy steel.

Gate Valves

• ANSI B16.34
• 2" to 36"
• ASME class 600 to 4100

Salient Features:

• Pressure seal body-bonnet joint - Line pressure is used to create a tight body-bonnet seal. Higher the pressure, tighter the seal.
• Parallel-slide gate with disc-springs - Better sealing, lower operating torque, minimises possibility of disc jamming.
• Fully hard-faced trim - Disc, seat-rings and back-seat hard-faced for longer service life.
• Welded seat ring - Eliminates leakage path between seat ring and body, does not loosen up due to temperature fluctuations or vibration.
• Valves available in intermediate pressure classes (#3100, 3500 & 4100) to meet specific customer requirements.
• Option - Valves are offered with pillar yoke arrangement that provides easy access to gland packing.

Globe Valves

• ANSI B16.34
• 2" to 18"
• ASME class 600 to 4100

Salient Features :

• Y-type Configuration - Straight flow and lower pressure drop compared to conventional globe valves. `
• Pressure seal body-bonnet joint - Line pressure is used to create a tight body-bonnet seal. Higher the pressure, tighter the seal.
• Integral body seat.
• Fully hard-faced trim - Disc, seat and back-seat hard-faced for longer service life.
• Guided disc.
• Impactor handwheels for tighter sealing.
• Valves available in intermediate pressure classes (#3100, 3500 & 4100) to meet specific customer requirements.
• Option - Valves are offered with pillar yoke arrangement that provides easy access to gland packing.

Check Valves

• ANSI B16.34
• 2" to 28"
• ASME class 600 to 4100

Salient Features:

• Pressure seal body-cover joint - Line pressure is used to create a tight body-bonnet seal. Higher the pressure, tighter the seal.
• Fully hard-faced trim - Disc and seat-rings hard-faced for longer service life.
• Welded seat ring - Eliminates leakage path between seat ring and body, does not loosen up due to temperature fluctuations or vibration.
• Swing-type disc.
• Disc: Internally-hinged - No opening on the body, higher integrity.
• Valves available in intermediate pressure classes (#3100, 3500 & 4100) to meet specific customer requirements.

L&T Valves offers Gate, Globe & Check Valves for cryogenic services suitable for temperatures as low as -196C (-321 degree F).

The valves are approved by the world-leaders in oil & gas and have a reputation for reliable performance in critical services, across the globe.

These valves are manufactured by L&T and its wholly-owned subsidiary, L&T Valves Limited (Formerly Audco India Limited). The state-of-the-art manufacturing infrastructure includes one of the largest in-house cryogenic test facilities in the world, capable of testing valves of sizes up to 60.

Gate Valves

• API 600/ ISO 10434/ BS 6364
• 2" to 54"
• ASME class 150 to 2500

Salient Features:

• Extended bonnet with vapour column length as per BS 6364/ customer requirement - Packing protected from cryogenic temperatures, efficiency not compromised.
• Fully hard-faced trim - Disc, seat-rings and back-seat hard-faced for longer service life.
• Body and bonnet - Cast with uniform sections, precision machined.
• Body: Straight through port without recesses except in the seat area - Minimum resistance to flow, turbulence and erosion.
• Flex wedge: Guide slots in the wedge engage with integral guide ribs in the body, Stem-to-wedge contact close to wedge centre - Better sealing, smoother operation.
• Seal-welded seat ring - Eliminates leakage path between seat ring and body, does not loosen up due to temperature fluctuations or vibration.
• Stem - One-piece construction with forged T-head - Long service life, smoother operation.

Globe Valves

• BS 1873/ BS 6364
• 2" to 12"
• ASME class 150 to 2500

Salient Features:

• Extended bonnet with vapour column length as per BS 6364/ customer requirement - Packing protected from cryogenic temperatures, efficiency not compromised.
• Fully hard-faced trim - Disc, seat-rings and back-seat hard-faced for longer service life.
• Body and Bonnet - Cast with uniform sections, precision machined.
• In-situ hard-faced body seat - Eliminates leakage path between seat ring and body.
• Guided plug-type disc, Free-floating stem-disc connection - Uniform seating.

Check Valves

• BS 1868/ BS 6364
• 2" to 36"
• ASME class 150 to 2500

Salient Features :

• Fully hard-faced trim - Disc and seat-rings hard-faced for longer service life.
• Body and bonnet - Cast with uniform sections, precision machined.
• Body: Permits full swing of disc on downstream side - Lower flow resistance and disc erosion.
• Disc: Internally-hinged - No opening on the body, higher integrity.
• Disc secured to hinge using lock nut and pin.
• Disc free to rotate to avoid localized wear.

L&T Valves manufactures a variety of Gate, Globe & Check Valves in forged construction to suit a spectrum of applications.

Valves for Power

These valves are manufactured by L&T and its wholly-owned subsidiary, L&T Valves Limited (Formerly Audco India Limited) which focuses on the requirements of the power sector. The facility is the only Indian valve plant authorised to offer valves with ASME N and NPT stamps.

L&T forged steel valves conform to ASME B16.34 and the range comprises Pressure-seal Gate, Globe & Check Valves in ASME classes up to 4500.

Small-bore Forged Steel Valves

These valves are available in to 2 in straight pattern and Y-pattern.

The straight pattern Gate, Globe & Check Valves are available in ASME classes up to 800 and the Y-pattern range in classes 1500 and 2500.

Bellow-sealed and Cryogenic gate and globe valves are also offered.

L&T Valves offers customised SIL-3 capable HIPPS for over-pressure protection leveraging expertise of five decades in flow-control and system integration.

High Integrity Pressure Protection System (HIPPS) is a Safety Instrumented System (SIS), which by definition, is a distinct, reliable system used to safeguard a process to prevent a catastrophic release of toxic, flammable, or explosive chemicals. The system closes the source of over-pressure within two seconds and has at least the same reliability as a safety relief valve or a flare system.

A typical HIPPS system comprises the following:

• Pressure Sensors
• Logic Solver
• Final Element (Actuated Valve) which performs the emergency closure action via a Solenoid Operated Valve (SOV) to bring the process to a safe state.

Final elements (Actuated Valves) are accorded the highest priority in a HIPPS loop as studies suggest that they account for 50% of safety loop failures historically and calculations suggest that their contribution to PFD (avg) is the higher than that of sensors and logic solver. In short, performance of HIPPS is highly dependent on the integrity of the valve.

L&T Valves, with expertise in flow-control that spans five decades, is ideally equipped to design and manufacture HIPPS systems. L&T HIPPS can be offered with Trunnion-mounted Ball Valves (TMBV) or Triple-offset Butterfly Valves (TOBV) as final elements. L&T HIPPS can be supplied as a ready-to-fit skid-mounted system.

L&T Valves manufactures a wide variety of Gate, Globe & Check Valves in pressure-seal design.

The valves are approved by the global majors in power and oil & gas and have a reputation for reliable performance in critical services, across the globe.

Pressure seal range is available in ASME classes from 600 to 4100. The valves conform to ANSI B16.34 and are offered with fully hard-faced seats in carbon steel, stainless steel and alloy steel.

Gate Valves

• ANSI B16.34
• 2" to 36"
• ASME class 600 to 4100

Salient Features:

• Pressure seal body-bonnet joint - Line pressure is used to create a tight body-bonnet seal. Higher the pressure, tighter the seal.
• Parallel-slide gate with disc-springs - Better sealing, lower operating torque, minimises possibility of disc jamming.
• Fully hard-faced trim - Disc, seat-rings and back-seat hard-faced for longer service life.
• Welded seat ring - Eliminates leakage path between seat ring and body, does not loosen up due to temperature fluctuations or vibration.
• Valves available in intermediate pressure classes (#3100, 3500 & 4100) to meet specific customer requirements.
• Option - Valves are offered with pillar yoke arrangement that provides easy access to gland packing.

Globe Valves

• ANSI B16.34
• 2" to 18"
• ASME class 600 to 4100

Salient Features :

• Y-type Configuration - Straight flow and lower pressure drop compared to conventional globe valves. `
• Pressure seal body-bonnet joint - Line pressure is used to create a tight body-bonnet seal. Higher the pressure, tighter the seal.
• Integral body seat.
• Fully hard-faced trim - Disc, seat and back-seat hard-faced for longer service life.
• Guided disc.
• Impactor handwheels for tighter sealing.
• Valves available in intermediate pressure classes (#3100, 3500 & 4100) to meet specific customer requirements.
• Option - Valves are offered with pillar yoke arrangement that provides easy access to gland packing.

Check Valves

• ANSI B16.34
• 2" to 28"
• ASME class 600 to 4100

Salient Features:

• Pressure seal body-cover joint - Line pressure is used to create a tight body-bonnet seal. Higher the pressure, tighter the seal.
• Fully hard-faced trim - Disc and seat-rings hard-faced for longer service life.
• Welded seat ring - Eliminates leakage path between seat ring and body, does not loosen up due to temperature fluctuations or vibration.
• Swing-type disc.
• Disc: Internally-hinged - No opening on the body, higher integrity.
• Valves available in intermediate pressure classes (#3100, 3500 & 4100) to meet specific customer requirements.