L & T Valves Limited Poonamale Highway, Chennai, Tamil Nadu

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. 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. 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. 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.

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. 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.

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”.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.

L&T Valves Limited manufactures a comprehensive range of Double Block & Bleed Plug Valves in sizes up to 30” (750 mm) and in ASME classes 150 and 300. The valves are offered in combinations of size, pressure class, material, end-connection, etc to suit customer requirements. Double Block & Bleed Plug Valve provides online-verifiable high-integrity positive shut-off, and is a safe and reliable replacement for the old two-valve system. Globally, the valve has emerged as the industry standard for movement and storage of petroleum products in refineries, tank farms and terminals. L&T Double Block & Bleed Plug Valve is designed in accordance with key international standards. It also meets the requirements of major oil & gas industry standards and customer specifications. Double Block & Bleed Valve, Mechanically-assisted sealing - Reliable bubble-tight shut-off at low and high pressures., Unique valve operation mechanism - Segments do not rub against seats during plug rotation, Cavity Relief System - Prevents body cavity pressure build-up. Pressure relieved to upstream or downstream based on customer, On-line maintenance - Segments can be replaced on line, Drain provided for online verification draining the cavity.