Loose-Liner Butterfly Valve

Loose-Liner Butterfly Valve

SIZE: 8″~14″
RATING: 200WOG
BODY: ASTM A536 DUCTILE IRON
DISC: ASTM A536 DUCTILE IRON
STEM: SS416 PINLESS
SEAT: NBR
ACTUATION: GEAR UNIT

PRODUCT Description

 

 

  • GENERAL DESIGN SPECIFICATION

    Size: 2″~48″.

    Pressure Rating: PN6, PN10, PN16,PN20, 200WOG, 125LB, 150LB, JIS 5K 10K 16K 20K

    General applications: Water. Oil. Gas.

    Suitable temperature: -29℃~150℃

    Design & Manufacture: API 609 are basic, ASME B16.34 ,other norms could be used according to orders.

    F TO F dimensions: API 609, ASME B16.10,BS EN 558

    Connection: Drilled as per ASME B16.5, EN 1092, JIS 5K-20K. BW, RTJ are available.

    Safety design: anti-blow out stem.

  • TYPICAL MATERIAL LIST

    BODY: ASTM A126 , ASTM A536, ASTM A216 WCB ASTM A395

    DISC: ASTM A536, ASTM A395, ASTM A351 CF8, ASTM A351 CF8M, ALUMINIUM BRONZE (C95400, C95500), DSS F51, F53, F55

    STEM: 13CR,SS304,SS316, DSS F51, F53, F55, XM-19, 17-4PH, INCONEL 718, MONEL K-500

    SEAT: EPDM, NPR, VITON

    OPERATOR: LEVER AND GEAR UNIT

    OTHER SPECIAL MATERIALS ARE AVAILABLE TO CUSTOMIZE.

  • TEST AND INSPECTION

    Inspection and approval norm: API598, API6D.

  • QUALITY CONTROL

    100% Chemical analysis and mechanical test with raw materials of each heat numbers.

    100% DPT test with the castings, partly MT or UT test, RT is always available if required.

    100% hydraulic test with the shell and seal and low pressure air test.

  • GUATANTEE

    SAVVY VALVES is committed to delivering exceptional product quality and worry-free after-sales service. Our valves are guaranteed to provide a minimum service life of 12 months, during which we will supply all necessary spare parts and detailed maintenance instructions free of charge. Within the warranty period, if any non-human-induced damage occurs, we will replace components at no cost and provide professional technical support. After the warranty expires, customers only need to pay for the cost of spare parts, while still benefiting from discounted maintenance services. Our goal is to help clients reduce operational costs and enhance production efficiency through reliable quality and comprehensive after-sales support. Whether for technical inquiries or maintenance needs, our expert team will respond promptly to ensure your valve system maintains optimal performance at all times.

What Makes A Loose-Liner Butterfly Valve Suitable For Corrosive Applications?

The loose-liner butterfly valve features a replaceable, non-bonded liner that provides excellent chemical resistance and sealing performance, making it ideal for corrosive and abrasive media. Unlike bonded liners, the loose liner is not permanently affixed to the valve body, allowing for easier inspection, removal, and replacement when needed. This design reduces downtime and lowers maintenance costs, especially in industries like chemical processing, water treatment, and food production. The liner also acts as a gasket between the valve and flanges, simplifying installation and enhancing leak protection. Because the disc only contacts the liner—not the body—it prevents metal corrosion and improves service life. With versatility, ease of maintenance, and superior media compatibility, the loose-liner butterfly valve offers a practical and cost-effective solution for systems requiring frequent maintenance or exposure to harsh chemicals.

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