Triple Offset Eccentric Butterfly Valve - Arita | Unimech
Home / Products / Butterfly Valve /

Triple Offset Eccentric Butterfly Valve

Triple Offset Eccentric Butterfly Valve Overview

Triple Offset Butterfly Valve provides a bi-directional bubble tight shut-off.  The design highlights the immediate brake away of the disc seal from the valve body seat at the moment of opening. The disc seal only contacts the body seal at the final shut-off position without rubbing or galling, providing a torque generated resilient seal with sufficient "wedging" to ensure a uniform seal contact. This kind of design completely remove the mechanical wear and scratch between two sealing sections,and greatly improve the sealing performance and life-span of the butterfly valve.


Offset 1: The shaft is offset behind the seat axis to allow complete sealing contact around the entire seat

Offset 2: The shaft centerline is offset from the pipe and valve which provides interference free opening and closing of the valve

Offset 3: The seat cone axis is offset from the shaft centerlline to eliminate friction during closing and opening to ahieve uniform compressive sealing around the entire seat

Products

Triple Offset Metal Seated Butterfly Valve

ARITA®

  • Size

    Rating

    Body Material

  • 2" - 52"

    Up to 1480 PSI, ANSI 150 to 900

    Carbon Steel, Stainless Steel

  • Trim

    WCB, CF8, CF8M, CF3, CF3M

  • Operation

    Manual, Actuator

  • Connection

    Flange, Wafer, Lug, Weld

  • Design Standard

    BS 5155, ASME 16.34, MSS SP-68, API 609

  • Testing

    API 598, Fire Test API 607

  • Mounting Option

    ISO 5211

Triple Offset Resilient Seated Butterfly Valve

ARITA®

  • Size

    Rating

    Body Material

  • 2" - 52"

    Up to 740 PSI, ANSI 150 to 600

    Carbon Steel, Stainless Steel

  • Trim

    WCB, CF8, CF8M, CF3, CF3M

  • Operation

    Manual, Actuator

  • Connection

    Flange, Wafer, Lug, Weld

  • Design Standard

    BS 5155, ASME 16.34, MSS SP-68, API 609

  • Testing

    API 598, Fire Test API 607

  • Mounting Option

    ISO 5211

Contact Us
  • Unimech Shanghai Co. Ltd.
  • Unit 301, Block 3, No.1 Kangshi Road, Pudong, Shanghai, China
  • Tel: +86 21 61181608
  • Email: info@unimechflow.com

© 2019 Unimech, Inc. All rights reserved. DESIGN BY ZEXI