{"id":1845,"date":"2026-08-10T12:21:14","date_gmt":"2026-08-10T12:21:14","guid":{"rendered":"https:\/\/www.valvefac.com\/?post_type=product&p=1845"},"modified":"2026-08-12T10:13:28","modified_gmt":"2026-08-12T10:13:28","slug":"bronze-lug-type-butterfly-valve","status":"publish","type":"product","link":"https:\/\/www.valvefac.com\/index.php\/product\/bronze-lug-type-butterfly-valve\/","title":{"rendered":"Bronze Lug Type Butterfly Valve for Marine Seawater Pipeline System"},"content":{"rendered":"

Bronze Lug Type Butterfly Valve<\/h3>\n

1. General Information<\/h3>\n
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<\/div>\n
<\/div>\n<\/div>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Item<\/th>\nStandard Configuration<\/th>\nUser Specification \/ Remarks<\/th>\n<\/tr>\n<\/thead>\n
Valve Type<\/strong><\/td>\nCenter Line Butterfly Valve<\/strong>\u00a0(Concentric \/ Resilient Seated)<\/td>\n<\/td>\n<\/tr>\n
Connection Type<\/strong><\/td>\nWafer Type<\/strong>\u00a0(Fits between flanges) \/\u00a0Lug Type<\/strong>\u00a0(Threaded inserts)<\/td>\n<\/td>\n<\/tr>\n
Body Material<\/strong><\/td>\nC95800<\/strong>\u00a0(Nickel Aluminum Bronze \/ ASTM B148)<\/td>\nHigh strength, excellent corrosion resistance in seawater<\/td>\n<\/tr>\n
Disc Material<\/strong><\/td>\nC95800<\/strong>\u00a0(Nickel Aluminum Bronze)<\/td>\n<\/td>\n<\/tr>\n
Stem Material<\/strong><\/td>\nMonel K400<\/strong>\u00a0(UNS N04400)<\/td>\nExcellent corrosion resistance in saline and acidic environments<\/td>\n<\/tr>\n
Seat Material<\/strong><\/td>\nViton (FKM)<\/strong><\/td>\nFluoroelastomer \u2013 Excellent chemical & heat resistance<\/td>\n<\/tr>\n
Nominal Size<\/strong><\/td>\n2\u2033 \u2013 24\u2033 (DN50 \u2013 DN600)<\/td>\n<\/td>\n<\/tr>\n
Pressure Rating<\/strong><\/td>\nClass 150 \/ PN10 \/ PN16<\/td>\n<\/td>\n<\/tr>\n
Design Standard<\/strong><\/td>\nAPI 609 \/ MSS SP-67 \/ ISO 5752<\/td>\n<\/td>\n<\/tr>\n
Face-to-Face<\/strong><\/td>\nAPI 609 Short Pattern \/ ISO 5752 Series 20<\/td>\n<\/td>\n<\/tr>\n
Flange Drilling<\/strong><\/td>\nASME B16.5 \/ ASME B16.42 \/ EN 1092-2<\/td>\n<\/td>\n<\/tr>\n
Inspection & Test<\/strong><\/td>\nAPI 598 \/ ISO 5208<\/td>\n<\/td>\n<\/tr>\n
Top Flange<\/strong><\/td>\nISO 5211 (For direct actuator mounting)<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

2. Bill of Materials (Main Components)<\/h3>\n
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No.<\/th>\nPart Name<\/th>\nMaterial<\/th>\nRemarks<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\nBody<\/strong><\/td>\nC95800<\/strong>\u00a0(Nickel Aluminum Bronze)<\/td>\nASTM B148 \/ AB2<\/td>\n<\/tr>\n
2<\/td>\nDisc<\/strong><\/td>\nC95800<\/strong>\u00a0(Nickel Aluminum Bronze)<\/td>\nPolished finish<\/td>\n<\/tr>\n
3<\/td>\nStem<\/strong><\/td>\nMonel K400<\/strong>\u00a0(UNS N04400)<\/td>\nHigh strength, anti-corrosion<\/td>\n<\/tr>\n
4<\/td>\nSeat<\/strong><\/td>\nViton (FKM)<\/strong><\/td>\nBonded \/ Lined type \u2013 Fluoroelastomer<\/td>\n<\/tr>\n
5<\/td>\nO-Ring \/ Backup Ring<\/strong><\/td>\nViton (FKM) \/ PTFE<\/td>\nStem sealing<\/td>\n<\/tr>\n
6<\/td>\nBushings \/ Bearings<\/strong><\/td>\nPTFE \/ Bronze backed PTFE<\/td>\nStem support<\/td>\n<\/tr>\n
7<\/td>\nThrust Washer<\/strong><\/td>\nPTFE \/ Bronze<\/td>\n<\/td>\n<\/tr>\n
8<\/td>\nHandle \/ Gearbox<\/strong><\/td>\nDuctile Iron \/ Steel (Epoxy coated)<\/td>\nOptional<\/td>\n<\/tr>\n
9<\/td>\nFasteners (for Lug)<\/strong><\/td>\nStainless Steel (304 \/ 316) \/ Monel<\/td>\nFor lug type only<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

3. Technical Parameters & Performance<\/h3>\n
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<\/div>\n<\/div>\n\n\n\n\n\n\n\n\n\n\n\n\n
Item<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
Medium<\/strong><\/td>\nSeawater, Brine, Acids, Alkalis, Hydrocarbons, Oils, Fuels, Chemicals (____________________)<\/td>\n<\/tr>\n
Operating Temp.<\/strong><\/td>\n-20\u00b0C ~ +200\u00b0C<\/strong>\u00a0(Viton Seat)<\/td>\n<\/tr>\n
Max Operating Pressure<\/strong><\/td>\nUp to 200 psi \/ 16 bar (De-rate at high temps)<\/td>\n<\/tr>\n
Leakage Rate<\/strong><\/td>\nISO 5208 Rate A<\/strong>\u00a0(Bubble tight, zero leakage)<\/td>\n<\/tr>\n
Flow Direction<\/strong><\/td>\nBidirectional \/ Unidirectional (Lug type recommended for dead-end service)<\/td>\n<\/tr>\n
Seat Type<\/strong><\/td>\nResilient (Flexible liner) \u2013 Replaceable \/ Bonded<\/td>\n<\/tr>\n
Disc Type<\/strong><\/td>\nConcentric (Center Line)<\/td>\n<\/tr>\n
Stem Sealing<\/strong><\/td>\nO-Ring + Blow-out proof design<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

4. Test Pressure (Reference: Class 150 \/ PN16)<\/h3>\n
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\n
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<\/div>\n<\/div>\n\n\n\n\n\n\n\n\n
Test Type<\/th>\nPressure<\/th>\nStandard<\/th>\n<\/tr>\n<\/thead>\n
Shell (Hydrostatic)<\/strong><\/td>\n1.5 x Rated Pressure<\/td>\nAPI 598 \/ ISO 5208<\/td>\n<\/tr>\n
Seat (Hydrostatic)<\/strong><\/td>\n1.1 x Rated Pressure<\/td>\nAPI 598 \/ ISO 5208<\/td>\n<\/tr>\n
Low Pressure Seat (Air)<\/strong><\/td>\n80 psi \/ 0.6 MPa<\/td>\nBubble tight<\/td>\n<\/tr>\n
*(Note: For Class 150, typical shell test is 425 psi \/ 2.9 MPa)*<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

5. Dimensions & Weight (Reference: Wafer Type, API 609 Short Pattern)<\/h3>\n
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NPS<\/th>\nDN (mm)<\/th>\nL (Face-to-Face) mm<\/th>\nH (Open) mm (approx)<\/th>\nWeight (kg) approx<\/th>\n<\/tr>\n<\/thead>\n
2\u2033<\/strong><\/td>\n50<\/td>\n43<\/td>\n85<\/td>\n3<\/td>\n<\/tr>\n
4\u2033<\/strong><\/td>\n100<\/td>\n52<\/td>\n120<\/td>\n6<\/td>\n<\/tr>\n
6\u2033<\/strong><\/td>\n150<\/td>\n56<\/td>\n150<\/td>\n10<\/td>\n<\/tr>\n
8\u2033<\/strong><\/td>\n200<\/td>\n60<\/td>\n190<\/td>\n16<\/td>\n<\/tr>\n
10\u2033<\/strong><\/td>\n250<\/td>\n68<\/td>\n230<\/td>\n25<\/td>\n<\/tr>\n
12\u2033<\/strong><\/td>\n300<\/td>\n78<\/td>\n270<\/td>\n38<\/td>\n<\/tr>\n
(Note: For Lug type, weight is slightly higher. For larger sizes or exact dimensions, refer to certified GA drawing.)<\/em><\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

6. Special Requirements \/ Options<\/h3>\n
    \n
  • \n

    Operation:<\/strong>\u00a0Lever \/ Gearbox \/ Pneumatic Actuator \/ Electric Actuator<\/p>\n<\/li>\n

  • \n

    Locking Device:<\/strong>\u00a0Yes \/ No<\/p>\n<\/li>\n

  • \n

    Position Indicator:<\/strong>\u00a0Yes \/ No<\/p>\n<\/li>\n

  • \n

    Lug Type Tapped Lugs:<\/strong>\u00a0For dead-end service<\/p>\n<\/li>\n

  • \n

    Stem Extension:<\/strong>\u00a0Yes \/ No (For buried service)<\/p>\n<\/li>\n

  • \n

    Test Certificate:<\/strong>\u00a0EN 10204 3.1<\/p>\n<\/li>\n

  • \n

    Coating:<\/strong>\u00a0No coating required (C95800 is corrosion resistant)<\/p>\n<\/li>\n

  • \n

    Special Cleaning:<\/strong>\u00a0For Oxygen \/ Food \/ Pharmaceutical service<\/p>\n<\/li>\n<\/ul>\n

    \n

    Material Notes:<\/h3>\n
      \n
    • \n

      C95800 (Nickel Aluminum Bronze):<\/strong>\u00a0High strength alloy with excellent corrosion resistance in seawater, brackish water, and many chemical environments. Commonly used in marine, offshore, and desalination applications.<\/p>\n<\/li>\n

    • \n

      Monel K400 (UNS N04400):<\/strong>\u00a0Nickel-copper alloy with excellent resistance to seawater, hydrofluoric acid, and alkalis. Provides superior stem strength and corrosion resistance.<\/p>\n<\/li>\n

    • \n

      Viton (FKM):<\/strong>\u00a0Fluoroelastomer with excellent resistance to high temperatures, ozone, oils, fuels, and many chemicals. Suitable for temperatures up to 200\u00b0C. Not recommended for ketones, esters, or brake fluids.<\/p>\n<\/li>\n<\/ul>\n

      Note:<\/strong>\u00a0This datasheet is prepared for a\u00a0Center Line Butterfly Valve<\/strong>\u00a0with high-performance marine-grade materials and Viton seat. Ensure compatibility of Viton with specific service media.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

      Bronze Lug Type Butterfly Valve is lug-type pipeline shut-off valve designed for marine and water pipeline flow control.
      \nBody material: high-quality bronze alloy
      \nEnd connection: Lug-type bolt through installation
      \nPressure rating: PN10-PN16 \/ Class125-150
      \nOutstanding anti-corrosion performance, suitable for seawater and salt-water working condition
      \nUnique lug structure supports one-sided installation and end-line sealing
      \n90\u00b0 flexible opening and closing, low pipeline flow resistance
      \nTight sealing performance, effectively prevent medium leakage
      \nCompact and sturdy structure, convenient installation and disassembly
      \nDurable construction, long service life under marine harsh environment
      \nOEM support for size and standard customization<\/p>\n","protected":false},"featured_media":1846,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[30,26],"product_tag":[],"class_list":{"0":"post-1845","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bronze-valves","7":"product_cat-butterfly-valve","9":"first","10":"instock","11":"shipping-taxable","12":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/www.valvefac.com\/index.php\/wp-json\/wp\/v2\/product\/1845","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.valvefac.com\/index.php\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.valvefac.com\/index.php\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.valvefac.com\/index.php\/wp-json\/wp\/v2\/comments?post=1845"}],"version-history":[{"count":3,"href":"https:\/\/www.valvefac.com\/index.php\/wp-json\/wp\/v2\/product\/1845\/revisions"}],"predecessor-version":[{"id":2011,"href":"https:\/\/www.valvefac.com\/index.php\/wp-json\/wp\/v2\/product\/1845\/revisions\/2011"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.valvefac.com\/index.php\/wp-json\/wp\/v2\/media\/1846"}],"wp:attachment":[{"href":"https:\/\/www.valvefac.com\/index.php\/wp-json\/wp\/v2\/media?parent=1845"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.valvefac.com\/index.php\/wp-json\/wp\/v2\/product_brand?post=1845"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.valvefac.com\/index.php\/wp-json\/wp\/v2\/product_cat?post=1845"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.valvefac.com\/index.php\/wp-json\/wp\/v2\/product_tag?post=1845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}