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    AI Overview
    Proquip Dual-Plate Check Valve: Lug Type | Velan
    Lug type check valves are industrial, self-actuating check valves designed with threaded, protruding lugs that allow them to be bolted directly between two pipe flanges, enabling dead-end service and one-sided piping disconnection. These valves commonly feature a compact, dual-plate (or wafer) design that reduces water hammer and weight. 
    Key Features and Benefits 
    • Installation: Threaded lugs on the body allow for direct bolt connection, requiring fewer, shorter bolts and enabling one-sided pipeline maintenance or removal.
    • End-of-Line Service: Suitable for installation at the end of a piping system (dead-end service).
    • Design Standards: Commonly designed in accordance with API-594 for dual plate check valves, ranging from 2 to 48 inches.
    • Reduced Leakage: Often feature a "retainerless" design, which eliminates holes in the body, reducing potential leak paths for hazardous or high-pressure applications.
    • Performance: Designed to handle high-pressure and high-temperature scenarios, such as steam or chemical processing. 
    Common Applications 
    • Industrial Piping: Used extensively in water treatment, chemical processing, and oil & gas, including high-salinity and seawater systems.
    • Pump Discharge: Frequently used in downstream pump applications to prevent backflow and slamming.
    • Compact Areas: Ideal for locations where space is limited due to their narrow, wafer-type profile. 
    Lug vs. Wafer Type 
    • Lug Type: Has threaded holes; allows one side of the piping to be removed while the other remains pressurized.
    • Wafer Type: Held in place by surrounding piping bolts, typically lighter but does not support dead-end service. 
    These valves are available in various materials, such as Cast Steel (A216 WCB) or Stainless Steel (CF8/CF8M), and are chosen based on the fluid compatibility and pressure rating requirements. 
    • Retainerless Wafer Lug Body Double Disc Check Valves
      The Keckley retainerless wafer lug body double disc check valve features a single cast body without pin retainer holes in the body...
      Keckley Company
    • What is a Lug Type Check Valve?
      Feb 27, 2025 — Lug type check valves are used in a variety of industries, including: * **Industrial fluid control** Lug type check valves typical...
      Dvsvalve
    • Wafer vs. Lug-Style Butterfly Valves
      Jun 25, 2020 — Lug-Style Butterfly Valve Lug-style butterfly valves are usually composed of metal such as ductile iron or steel. They feature thr...
      red-white valve corp.
    Show all
    • Retainerless Wafer Lug Body Double Disc Check Valves
      The Keckley retainerless wafer lug body double disc check valve features a single cast body without pin retainer holes in the body...
      Keckley Company
    • What is a Lug Type Check Valve?
      Feb 27, 2025 — Lug type check valves are used in a variety of industries, including: * **Industrial fluid control** Lug type check valves typical...
      Dvsvalve
    • Wafer vs. Lug-Style Butterfly Valves
      Jun 25, 2020 — Lug-Style Butterfly Valve Lug-style butterfly valves are usually composed of metal such as ductile iron or steel. They feature thr...
      red-white valve corp.
    • Dual Plate Lug Type Check Valve
      These valves comply with international standards such as API 594, ASME, and JIS, and are widely used in seawater treatment, high-s...
      Taiwan Valve Centre Co., Ltd.
    • Cast Steel Dual Disc Lug Style Check Valve (Dual Plate) | Walworth®
      The Cast Steel Dual Disc Lug Style Check Valve (Dual Plate) is a valve that is used to prevent backflow. It is often fitted downst...
      Walworth
    • Wafer vs Lug Butterfly Valve: How to Choose
      Nov 21, 2025 — Lug-type valves have several advantages over wafer-type valves, including: * **End-of-line capability** Lug-type valves can be ful...
      Tianjin Union Valve Co., Ltd
    • Dual Plate Lug Type Check Valve
      AFC dual plate lug check valve is retainerless wafer lug body double disc, it features with a single cast body without pin retaine...
      afc-valve.com
    • Dual Plate Full Lug Type Check Valve - Solid ...
      More Knowledge about TVCCL valve: TVCCL Full Lug type valve has lugs that are used to mount the valve to lugs that are attached th...
      Taiwan Valve Centre Co., Ltd.
    • Stainless Steel Dual Plate Lug Type Check Valve With Retainerless
      TC8-2-CF8. CF8M. ... Due solve eliminate leak paths from body, the desire to remove the external fixtures on the valve,has produce...
      Taiwan Valve Centre Co., Ltd.
    • Lug type dual plate check valve-Lug ...
      Lug type dual plate check valve * Nominal diameter: 8" * Pressure rating: Class 900# * Connection: RJ wafer lugged as per ASME B16...
      WELCO VALVE CO.,LTD.
    • Stainless Steel Dual Plate Full Lug Type Check Valve - CF8.CF8M Solid Lug type dual check valve, CF8.CF8M Wafer Full Lug Check Valve | Made in Taiwan Dual Plate Check Valves Manufacturer | Taiwan Valve Centre Co., Ltd.
      Full lug type check valves are solid to the flange, so they are heavier but stronger. They are also connected by flanges on both s...
      Taiwan Valve Centre Co., Ltd.
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    Web results

    Retainerless Wafer Lug Body Double Disc Check Valves


    Keckley Company
    https://www.keckley.com › retainerless-wafer-lug-body-c...
    Keckley Company
    https://www.keckley.com › retainerless-wafer-lug-body-c...
    The Keckley retainerless wafer lug body double disc check valve features a single cast body without pin retainer holes in the body.Read more

    Proquip Dual-Plate Check Valve: Lug Type


    Velan
    https://velan.com › Products
    Velan
    https://velan.com › Products
    Features & Benefits · Retainerless emission-free design. · Body surface with uninterrupted gasket surface. · Intrinsically fire safe. · The reduced weight of ...Read more

    Lug Style Check Valves


    John M. Ellsworth Company
    https://www.jmesales.com › lug-style-check-valves
    John M. Ellsworth Company
    https://www.jmesales.com › lug-style-check-valves
    Titan Flow Control. Titan Flow Control CV42LCSV1200 12 in. Carbon Steel Check Valve w/ Viton Seat & SS Disc, Dual Disc Lug Style - ASME Class 150. $7,235.00.Read more
    $809 to $18,494 · 25–28 day delivery · 30-day returns

    What is a Lug Type Check Valve?


    Dvsvalve
    https://www.dvsvalve.com › what-is-a-lug-type-check-v...
    Dvsvalve
    https://www.dvsvalve.com › what-is-a-lug-type-check-v...
    Feb 27, 2025 — The lug type check valve is a one-way valve with threaded lug connections. It typically consists of a valve body, valve disc, valve seat, and a spring (in some ...Read more

    Cast Steel Dual Disc Lug Style Check Valve (Dual Plate)


    Walworth
    https://walworth.com › retencion_lug
    Walworth
    https://walworth.com › retencion_lug
    This is the preferred valve for installations where weight reduction of system structures is required or where spacing problems occur.Read more
    People also ask
    What is a lug type valve?
    Lug-style butterfly valves are usually composed of metal such as ductile iron or steel. They feature threaded tapped lugs positioned on the valve flanges for bolt connections. Lug-style butterfly valves are suitable for end-of-line service but a blind flange is always recommended.Jun 25, 2020

    Wafer vs. Lug-Style Butterfly Valves


    red-white valve corp.
    https://redwhitevalvecorp.com › wafer-vs-lug-style-butte...
    red-white valve corp.
    https://redwhitevalvecorp.com › wafer-vs-lug-style-butte...
    What are three types of check valves?
    An error has occurred. Please try again later.
    What is the difference between a wafer and lug type check valve?
    A lug-type check valve generally supports pressure at higher levels because of their strong bolting design, while a wafer-type check valve are best suited for moderate pressure applications, with compact builds limiting their high-pressure industrial application.Aug 8, 2025

    Wafer-Type vs. Lug-Type Check Valves: Key Distinctions - YOUFUMI


    YOUFUMI
    https://www.china-yfm.com › blog › wafer-vs-lug-check...
    YOUFUMI
    https://www.china-yfm.com › blog › wafer-vs-lug-check...
    What are the 4 types of valves?
    Valves are mainly grouped into linear motion, rotary motion, automatic, and actuated types. Linear valves include gate and globe valves. Rotary valves include ball and butterfly valves. Automatic valves respond to pressure changes, while actuated valves use electric, pneumatic, or hydraulic power.

    Master 15+ Types of Valves: Functions, Industrial Uses, and More


    歷凱實業有限公司
    https://www.kuhnway.com › technical-info-2 › types-of-...
    歷凱實業有限公司
    https://www.kuhnway.com › technical-info-2 › types-of-...

    Web results

    Keckley Style DL SS Wafer Lug Check Valves


    Hayward Pipe & Supply Co
    https://www.haywardpipe.com › keckley-style-dl-ss-waf...
    Hayward Pipe & Supply Co
    https://www.haywardpipe.com › keckley-style-dl-ss-waf...
    The Keckley retainerless wafer lug body double disc check valve features a single cast body without pin retainer holes in the body.Read more

    14” and Larger Wafer and Lug Style Dual Disc


    Val-Matic Valve
    https://www.valmatic.com › pdfs › DDCV-OM2-2
    Val-Matic Valve
    https://www.valmatic.com › pdfs › DDCV-OM2-2
    PDF
    The Dual Disc® Check Valve is designed to open fully to provide flow in the forward direction and close rapidly upon flow reversal. The valves are used to ...Read more
    7 pages

    Dual-Plate Lug Check Valves


    Explore the World of Piping
    https://www.wermac.org › valves › dim_valves_dplc
    Explore the World of Piping
    https://www.wermac.org › valves › dim_valves_dplc
    Dual-Plate Lug Check Valves - Face to Face dimensions - API Standard 594 - Pressure Classes 150 to 2500.
    Videos
    VERSPEC Lug Type Dual-plates Swing Check Valve
    YouTube · VerSpec Valve
    Jun 30, 2020
    YouTube · VerSpec Valve
    1:47
    Wafer vs. Lug Style Butterfly Valves
    YouTube · RED-WHITE VALVE CORP.
    Nov 17, 2020
    YouTube · RED-WHITE VALVE CORP.
    0:57
    Dual Plate Check Valve
    YouTube · Welco Valve
    Jul 27, 2017
    YouTube · Welco Valve
    1:36
    Welco Valve's dual plate check valves with spring-loaded discs reduce water hammer and are suitable for urban water supply and drainage.
    View all

    Web results

    API 594 & API 598 Dual Plate Check Valve Manufacturer


    Powell Valves
    https://www.powellvalves.com › ... › Valves by Design
    Powell Valves
    https://www.powellvalves.com › ... › Valves by Design
    Powell offers API 594 Dual Plate Check Valves in ASME classes 150 to 600, made from cast carbon steel, stainless steel or alloy steel wafer, lug, or double ...Read more
    Images
    Proquip Dual-Plate Check Valve: Lug Type | Velan
    Proquip Dual-Plate Check Valve: Lug Type | Velan
    Velan
    Keckley Company | Retainerless Wafer Lug Body Double Disc
    Keckley Company | Retainerless Wafer Lug Body Double Disc
    Keckley Company
    Wafer Lug Type Check Valve - ASTECH VALVE CO., LTD.
    Wafer Lug Type Check Valve - ASTECH VALVE CO., LTD.
    astech valve
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