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L&T Pr. Seal Bonnet Gate Valves - ASME Class 900, 1500 & 2500
L&T Pr. Seal Bonnet Gate Valves - ASME Class 900, 1500 & 2500
Brand L&T
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The ASME B16.34 family of L&T Gate, Y-Globe and Swing Check Valves features a pressure seal bonnet design for high pressure services. These valves are extensively used in high pressure and high temperature steam, oil, gas, chemical and water applications in thermal power plants, fertiliser plants, petrochemical plants and Refineries. The Valve are available with butt-weld ends in pressure ratings of Classes 900, 1500 and 2500, and come in carbon steel and alloy steel construction.

Gate valves also meet the requirements of API 600 Style A

Pr. Seal Bonnet Gate Valves - ASME Class 900, 1500 & 2500

Figure Numbers 3811 /272, 3861 /2UP & 3911 /2UP

GATE VALVES Parallel Slide Disc Mechanism This mechanism consists of two independent discs held by a disc carrier. An alloy steel spring between the discs provides the initial loading to keep the discs pressed against the body seats. The disc faces are parallel to each other and seal on parallel seat rings in the body. Sealing takes place by utilizing the line pressure to provide tight seal on the downstream seat. As the two discs are independent and parallel, opening / Closing torques are significant lower than comparable wedge disc designs, thereby minimizing the possibility of jamming at high temperatures or pressures.

When the valve is operated, the discs are allowed to slide and rotate over the body seats. This helps wipe out foreign particles from the seat faces.


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