Skip to main contentAccessibility help
Accessibility feedback
Press / to jump to the search box
Choose what you’re giving feedback on
  • Delete
  • See more
  • Delete
    • See more
    • Report inappropriate predictions
    Quick Settings
    Sign in
    AI Mode
    All
    Shopping
    Images
    Videos
    Short videos
    Forums
    More
    Web
    Books
    News
    Maps
    Tools

    Search Results

    Any time
    Any time
    Past hour
    Past 24 hours
    Past week
    Past month
    Past year
    Custom range...
    Custom date range
    Go
    All results
    All results
    Verbatim
    Advanced Search
    About 57,800 results (0.24s) 
    Ctrl+Shift+X to select
    An AI Overview is not available for this searchCan't generate an AI overview right now. Try again later.
    AI Overview
    An API 598 double eccentric butterfly valve is a high-performance, bidirectional isolation valve designed with two stem offsets, ensuring reduced seat wear, lower torque, and tight shut-off, typically tested for leakage per API 598 standards. These valves commonly serve industrial applications, water treatment, and oil and gas, often featuring fire-safe designs (API 607) and robust metal-to-metal seating. 
    Key Features of Double Eccentric (Double Offset) Design 
    • Dual Offsets: The stem is offset from both the seat centerline and the pipe centerline. This cam-action prevents the disc from rubbing against the seat throughout the rotation, reducing wear.
    • High Performance: Provides bidirectional sealing and allows the valve to handle higher pressures compared to concentric valves.
    • Reduced Torque: Lower friction means smaller actuators can be used. 
    API 598 Testing Standards 
    API 598 provides industry standards for testing and inspection, often utilized for double eccentric butterfly valves. 
    • Shell Tests: Validates the integrity of the pressure-containing structures.
    • Seat Leakage Test: Ensures the valve seals effectively under low or high-pressure tests.
    • Applicable Valve Types: Covers resilient, nonmetallic, and metal-to-metal seated valves. 
    Common Specifications and Applications 
    • Body Types: Wafer, Lug, and Double-flanged.
    • Size Range: Typical sizes range from DN50 to DN600, though larger designs exist.
    • Pressure Ratings: Typically suitable for PN16, PN25, PN40, or Class 150/300.
    • Applications: Ideal for water transmission, oil & gas, HVAC, and power generation due to reliable sealing and durability. 
    • API 598 Double Eccentric Butterfly Valve
      This design is commonly used in oil and gas pipelines, water transmission systems, and other applications where low pressure drop ...
      Dvsvalve
    • API 598 Testing Standards: Valve Leakage & Ratings
      Aug 8, 2025 — API Standard 598 is the industry benchmark for valve inspection and pressure testing, published by the American Petroleum Institut...
      stvvalve.com
    • High Performance Butterfly Valve Double Eccentric
      High performance bidirectional butterfly valves are designed for demanding process requirements. They are suitable for both fire-s...
      PJ Valves
    Show all
    • API 598 Double Eccentric Butterfly Valve
      This design is commonly used in oil and gas pipelines, water transmission systems, and other applications where low pressure drop ...
      Dvsvalve
    • API 598 Testing Standards: Valve Leakage & Ratings
      Aug 8, 2025 — API Standard 598 is the industry benchmark for valve inspection and pressure testing, published by the American Petroleum Institut...
      stvvalve.com
    • High Performance Butterfly Valve Double Eccentric
      High performance bidirectional butterfly valves are designed for demanding process requirements. They are suitable for both fire-s...
      PJ Valves
    • Double offset butterfly valves Series 2E
      The valve's design ensures safe operation and tightness even with sudden changes in temperature or pressure. The valve is availabl...
      ABO valve, s.r.o.
    • Leakage of Valves - Testing API 598, ANSI FCI 70-2, MSS-SP-61 ...
      Oct 22, 2025 — The API standard 598.. Valve Inspection and Testing, covers the testing and inspection requirements for gate, globe, check, ball, ...
      Explore the World of Piping
    • How to test a butterfly valve
      Feb 19, 2018 — the same thing with the upper ceiling plate. and now you can lower via the hydraulic clamping. and the two hand operation. the upp...
      5m
      YouTube·Metrus GmbH
    • Double Eccentric Butterfly Valve - RAYS Flow Control
      RAYS double eccentric butterfly valve featuring dynamic sealing, bidirectional zero leakage and excellent flow control. Low torque...
      RAYS Flow Control
    • API 598 - Valve Inspection and Testing - Inspectioneering
      API Std 598, Valve Inspection and Testing, is a standard developed and published by the American Petroleum Institute (API) that co...
      Inspectioneering
    • Single vs Double vs Triple Eccentric Butterfly Valve: The Ultimate Guide
      (2) Double eccentric butterfly valves On the basis of the single eccentric butterfly valve, the most widely used double eccentric ...
      WSV Valves
    • What's the difference between zero, double and triple offset butterfly ...
      Mar 2, 2023 — In a double offset valve, both the stem and disc are offset from the center. This creates a camming action that causes the disc to...
      Fluid Flow
    • Double Eccentric Butterfly Valve BS EN593 - JDP
      The double eccentric butterfly valve is a valve that regulates or isolates flows in pipelines up to DN2200. It conforms to BS EN 5...
      JDP UK
    • High Performance Butterfly Valve | NTVAL
      Seat Design Principles - High Performance The design allows for easy accommodation of bi-directional flow and shut-off. As the pre...
      ntval.com
    • Butterfly Valve
      High performance butterfly valve designs use pressure in the pipeline to increase interference between the seat and the edge of th...
      China.Yuanda Valve Group Co., Ltd.
    • Eccentric Plug Valve | NTVAL
      Petrol Chemical These valves are vital in nuclear and power generation systems due to their ( Double eccentric butterfly valves ) ...
      ntval.com
    AI can make mistakes, so double-check responses
    Share
    Facebook
    WhatsApp
    X
    Email
    Click to copy link
    Share link
    Link copied
    Thank you
    Your feedback helps Google improve. See our Privacy Policy.
    Share more feedback
    Report a problem
    Close
    Thank you
    Your feedback helps Google improve. See our Privacy Policy.
    Share more feedback
    Report a problem
    Close
    Thank you
    Your feedback helps Google improve. See our Privacy Policy.
    Share more feedback
    Report a problem
    Close
    Show more
    My Ad Center

    Web results

    High Performance Butterfly Valve Double Eccentric


    PJ Valves
    https://pjvalves.com › Products
    PJ Valves
    https://pjvalves.com › Products
    The offset design creates a camming action that minimises seat wear, delivering optimised torque and extended service life. Certified & Tested. Certified:Read more
    People also ask
    What is a double eccentric butterfly valve?
    (2) Double eccentric butterfly valves

    On the basis of the single eccentric butterfly valve, the most widely used double eccentric butterfly valve is further improved and formed. Its structural feature is that the shaft center of the valve stem deviates from the center of the disc and the center of the body.

    Single vs Double vs Triple Eccentric Butterfly Valve: The Ultimate Guide


    WSV Valves
    https://www.wsv-valve.com › the-difference-between-sin...
    WSV Valves
    https://www.wsv-valve.com › the-difference-between-sin...
    What is the difference between API 598 and API 609?
    API 609 is a specification for butterfly valves with lug-type and wafer-type configurations designed for installation between ANSI B16 flanges, 150 to 1500 class. API 598 covers the testing and inspection requirements for check, gate, globe, ball, plug & butterfly valves.

    ASME ANSI Valve Standards API BS Steel Stainless Ball Butterfly


    Global Supply Line
    https://globalsupplyline.com.au › uploads › 2014/10 › v...
    Global Supply Line
    https://globalsupplyline.com.au › uploads › 2014/10 › v...
    What is the difference between single eccentric and double eccentric butterfly valves?
    Single Eccentric Butterfly Valves – Best for moderate pressure systems, offering reduced friction and improved lifespan. Double Eccentric Butterfly Valves – Ideal for high-pressure and high-temperature applications, with enhanced sealing and lower maintenance.

    Difference between single eccentric and double eccentric butterfly valves


    Anasia Process Automation - Anasia Group
    https://processautomation.anasia.com › difference-betwee...
    Anasia Process Automation - Anasia Group
    https://processautomation.anasia.com › difference-betwee...
    What is the difference between API 598 and API 607?
    API 598 – Covers testing and inspection for gate, globe, ball, and check valves. It defines hydrostatic shell, seat, and backseat tests, specifying maximum allowable leakage rates. API 607 – Focuses on fire testing for soft-seated quarter-turn valves to ensure operation after exposure to flame and heat.Nov 3, 2025

    Why API Valve Testing Standards (API 598) Matter


    tgvalve.com
    https://www.tgvalve.com › blog › valve-testing-standards...
    tgvalve.com
    https://www.tgvalve.com › blog › valve-testing-standards...

    Web results

    API 598 Double Eccentric Butterfly Valve


    Dvsvalve
    https://www.dvsvalve.com › api-598-double-eccentric-...
    Dvsvalve
    https://www.dvsvalve.com › api-598-double-eccentric-...
    This design is commonly used in oil and gas pipelines, water transmission systems, and other applications where low pressure drop is required. If the seat bore ...Read more

    Double Eccentric Butterfly Valve | Dynamic Sealing & Zero ...


    RAYS Flow Control
    https://www.raysvalve.com › Products › Butterfly_Valv
    RAYS Flow Control
    https://www.raysvalve.com › Products › Butterfly_Valv
    RAYS double eccentric butterfly valve featuring dynamic sealing, bidirectional zero leakage and excellent flow control. Low torque design for water, steam, ...

    Double offset butterfly valves Series 2E


    ABO valve, s.r.o.
    https://www.abovalve.com › double-offset-butterfly-val...
    ABO valve, s.r.o.
    https://www.abovalve.com › double-offset-butterfly-val...
    ABO's Series 2E double eccentricity butterfly valves are designed for operation in very harsh environments that require high safety, trouble-free operation ...Read more

    API 598 Butterfly Valve | Weldon


    weldonvalves.com
    https://www.weldonvalves.com › ... › API Standard
    weldonvalves.com
    https://www.weldonvalves.com › ... › API Standard
    API 598 Butterfly Valve: Adheres to API 598 Standard, Ensures Efficient Flow Control and Reliable Shut-Off, Commonly Used in Petroleum and Natural Gas ...
    Missing: Eccentric ‎| Show results with: Eccentric

    High-Performance Double Eccentric Butterfly Valves


    Gangye valve
    https://www.chinagangye.com › products › double-eccen...
    Gangye valve
    https://www.chinagangye.com › products › double-eccen...
    Industry-leading double eccentric butterfly valves with fire-safe API 607 certification. ... (API 598 certified) ✓ 10-year service life in abrasive media. Key ...Read more

    Double offest High Performance Butterfly Valves ...


    Eng-Tips
    https://www.eng-tips.com › ... › Valve engineering
    Eng-Tips
    https://www.eng-tips.com › ... › Valve engineering
    Sep 8, 2016 — So, we follow the API 598 to conduct the pressure testings. When we do the high pressure closure test, we set the bare stem valves on the test ...Read more

    API 598 Testing Standards: Valve Leakage & Ratings


    stvvalve.com
    https://stvvalve.com › Home › News
    stvvalve.com
    https://stvvalve.com › Home › News
    Aug 8, 2025 — API Standard 598 is the industry benchmark for valve inspection and pressure testing, published by the American Petroleum Institute (API). It ...Read more

    Double Eccentric Butterfly Valve


    Jonloo Valve
    https://www.jonloovalves.com › ... › Butterfly Valves
    Jonloo Valve
    https://www.jonloovalves.com › ... › Butterfly Valves
    Leading butterfly valve supplier JONLOO supplies double eccentric butterfly valve with metal seat and double flanges. Request a quote.Read more
    5.0(1)

    Double Offset Butterfly Valve| KXC group


    kxcvalve.com
    https://www.kxcvalve.com › eccentric-butterfly-valve
    kxcvalve.com
    https://www.kxcvalve.com › eccentric-butterfly-valve
    Specifications: Size: 3"-40". Pressure: 125LB/150LB. Standard: API 609, API 598, ANSI B16.1 class125 ; Materials: Body :Ductile Iron. Seal : Ductile Iron GGG50.Read more
    People also search for
    Triple offset butterfly valve
    Pj valves catalogue pdf
    ABO valve catalogue
    ABO valves

    Page Navigation

    12345678910Next

    Footer Links

    90012, Los Angeles, CA
     - Based on your past activity
     - 
    Update location
    Can't update your location
    Learn more
    Updating location...
    HelpSend feedbackPrivacyTerms
    Google apps