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Double Block & Bleed Valve

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.

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Salient features :

  • Double Block & Bleed Valve.
  • Mechanically-assisted sealing - Reliable bubble-tight shut-off at low and high pressures.
  • Cavity Pressure Relief System (provided to relieve the built up cavity pressure).
  • Non-lubricated - Sealant not required to achieve zero leakage.
  • 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 requirement.
  • On-line maintenance - Segments can be replaced on line.
  • Fire-Safe
  • Drain provided for online verification / draining the cavity.