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Triple Offset Butterfly Valve for Industrial Flow Control
Butterfly Valve
Triple Offset Butterfly Valve for Industrial Flow Control.jpg
Triple Offset Butterfly Valve for Industrial Flow Control2.jpg

Triple Offset Butterfly Valve for Industrial Flow Control

This triple offset butterfly valve is developed for applications where sealing reliability and long-term stability are required under demanding service conditions. The design is based on a metal-to-metal sealing structure, combined with fire-safe performance, making it suitable for oil & gas, petrochemical plants, chemical processing, water treatment, and power systems.

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    • Product Description

      The triple offset geometry reduces direct contact between the disc and seat during opening and closing. In actual operation, this helps limit wear on sealing surfaces and keeps operating torque relatively stable, even after repeated cycles. Compared with conventional butterfly valves, it is more suitable for higher temperature and pressure conditions where soft seals are not practical.

      For the sealing system, the seat surface is hard-faced with Stellite® alloy. This improves resistance to corrosion, erosion, and thermal impact. The laminated metal sealing ring is designed to provide uniform contact around the seat, which helps maintain consistent shut-off performance. Graphite-based sealing components are used to improve fire safety and allow easier replacement during maintenance.

      The valve uses a one-piece shaft to ensure strength and reliable torque transmission. Bearings are selected to handle higher loads and reduce wear during operation. The packing system, combined with graphite material, is intended to control external leakage and meet common fugitive emission requirements in industrial applications.

      From an installation and operation standpoint, the valve includes an external position indicator, making it easier to confirm open or closed status in the field. Flange sealing surfaces are machined to maintain proper flatness, helping improve sealing reliability at pipeline connections.

      This type of triple offset butterfly valve is commonly used for media such as crude oil, natural gas, steam, chemical fluids, acids, seawater, and industrial gases. It is also applied in geothermal systems, district heating networks, and other energy-related processes.

    • Main Specifications

      •Size Range: DN50–1600 (2”–60”)
      •Pressure Rating: PN1–100 / Class 150–600
      •Materials: Carbon steel, CF8, CF8M, CF3M, duplex stainless s teel, and special alloys
      •Design Standard: API 609, EN 593
      •Face-to-Face: API 609, EN 558, ISO 5752
      •Flange Standard: ASME B16.5, ASME B16.47, EN 1092-1, JIS 2220
      •Testing: API 598, EN 12266-1
      •Fire Safe: API 607
      •Leakage: Zero leakage (API 598)
      •Emission: ISO 15848-1, API 622
      •NACE: MR0103 / MR0175
      •Connection: Wafer, lug, flanged, welded
      •Actuation: Manual, gear, electric, pneumatic, hydraulic

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