{"id":236,"date":"2026-05-12T23:29:29","date_gmt":"2026-05-12T15:29:29","guid":{"rendered":"https:\/\/www.develfluid.com\/?post_type=product&p=236"},"modified":"2026-05-13T19:42:39","modified_gmt":"2026-05-13T11:42:39","slug":"double-sphere-rubber-expansion-joint","status":"publish","type":"product","link":"https:\/\/www.develfluid.com\/index.php\/product\/double-sphere-rubber-expansion-joint\/","title":{"rendered":"Double sphere rubber expansion joint"},"content":{"rendered":"
\n
DEVEL Double Sphere Rubber Expansion Joints<\/strong> are engineered with a dual-convolution design to provide significantly greater movement and displacement compensation than standard single sphere joints. Utilizing premium elastomers and a specialized manual hand-wrapping process, these flexible connectors deliver exceptional multi-axis flexibility, superior noise dampening, and high pressure ratings. As a trusted manufacturer-direct supplier, Henan Devel provides comprehensive sizing ranges from DN32 up to DN3000 to meet demanding industrial piping requirements worldwide.<\/span><\/div>\n<\/div>\n

Key Features & Advantages<\/h3>\n
    \n
  • Extended Movement Compensation:<\/strong> The double-sphere design provides expanded axial compression, extension, and lateral deflection capabilities, making it ideal for high-displacement pipeline positions.<\/li>\n
  • Advanced Manual Hand-Wrapping:<\/strong> Built using a precision manual wrapping process rather than traditional mold pressing, ensuring uniform wall thickness and optimized synthetic cord ply integration for heavy-duty applications.<\/li>\n
  • High Vibration & Noise Isolation:<\/strong> Effectively isolates mechanical vibration and dampens fluid-borne noise, protecting sensitive pumps, valves, and downstream pipeline systems.<\/li>\n
  • Engineered Vacuum Resistance:<\/strong> Constructed with high-tensile reinforcement layers to withstand operational vacuum conditions without structural deformation or collapse.<\/li>\n<\/ul>\n

    Technical Parameters & Materials<\/h2>\n
    \n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Technical Property<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
    Product Name<\/td>\nDouble Sphere Rubber Expansion Joint<\/td>\n<\/tr>\n
    Bore Size Range<\/td>\nDN32mm – DN3000mm (1.25″ to 120″)<\/td>\n<\/tr>\n
    Working Pressure<\/td>\nPN10 \/ PN16 | Class 150<\/td>\n<\/tr>\n
    Standard Compliance<\/td>\nGB (Standard), ASME\/ANSI B16.5, DIN, BS, EN1092, JIS<\/td>\n<\/tr>\n
    Elastomer Material<\/td>\nEPDM, NBR (Nitrile), Natural Rubber, Neoprene, SBR<\/td>\n<\/tr>\n
    Flange Drilling<\/td>\nCarbon Steel Q235 (Galvanized\/Coated), Stainless Steel 304 \/ 316 \/ 316L<\/td>\n<\/tr>\n
    Applicable Media<\/td>\nWater, Sea Water, Sewage, Mild Acids, Alkalis, Oils, Compressed Air<\/td>\n<\/tr>\n
    Operating Temperature<\/td>\n-15\u00b0C to +115\u00b0C (depending on lining selection)<\/td>\n<\/tr>\n
    Safety Factor<\/td>\n\u2265 3:1 (Burst Pressure vs. Working Pressure)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    Dimensions & Movement Capabilities (Double Sphere)<\/h2>\n
    \n\n\n\n\n\n\n\n\n<\/colgroup>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Nominal Diameter<\/th>\nInstall Length<\/th>\nAxial Movement (mm)<\/th>\nRadial Movement<\/th>\nAngular Movement<\/th>\n<\/tr>\n
    mm (DN)<\/th>\ninch<\/th>\nDouble Sphere (mm)<\/th>\nExtension<\/th>\nCompression<\/th>\nDouble Sphere (mm)<\/th>\nDouble Sphere (\u00b0)<\/th>\n<\/tr>\n<\/thead>\n
    32<\/td>\n1.25<\/td>\n165<\/td>\n\u00b130<\/td>\n45<\/td>\n45<\/td>\n<\/tr>\n
    40<\/td>\n1.5<\/td>\n165<\/td>\n\u00b140<\/td>\n45<\/td>\n45<\/td>\n<\/tr>\n
    50<\/td>\n2<\/td>\n165<\/td>\n\u00b140<\/td>\n45<\/td>\n45<\/td>\n<\/tr>\n
    65<\/td>\n1.5<\/td>\n175<\/td>\n\u00b140<\/td>\n45<\/td>\n45<\/td>\n<\/tr>\n
    80<\/td>\n3<\/td>\n175<\/td>\n\u00b140<\/td>\n45<\/td>\n45<\/td>\n<\/tr>\n
    100<\/td>\n4<\/td>\n225<\/td>\n\u00b150<\/td>\n55<\/td>\n30<\/td>\n<\/tr>\n
    125<\/td>\n5<\/td>\n225<\/td>\n\u00b150<\/td>\n55<\/td>\n30<\/td>\n<\/tr>\n
    150<\/td>\n6<\/td>\n225<\/td>\n\u00b150<\/td>\n55<\/td>\n30<\/td>\n<\/tr>\n
    200<\/td>\n8<\/td>\n325<\/td>\n\u00b150<\/td>\n55<\/td>\n15<\/td>\n<\/tr>\n
    250<\/td>\n10<\/td>\n325<\/td>\n\u00b150<\/td>\n55<\/td>\n15<\/td>\n<\/tr>\n
    300<\/td>\n12<\/td>\n325<\/td>\n\u00b160<\/td>\n65<\/td>\n15<\/td>\n<\/tr>\n
    350<\/td>\n14<\/td>\n325<\/td>\n\u00b160<\/td>\n65<\/td>\n15<\/td>\n<\/tr>\n
    400<\/td>\n16<\/td>\n400<\/td>\n\u00b160<\/td>\n65<\/td>\n15<\/td>\n<\/tr>\n
    450<\/td>\n18<\/td>\n400<\/td>\n\u00b170<\/td>\n65<\/td>\n10<\/td>\n<\/tr>\n
    500<\/td>\n20<\/td>\n400<\/td>\n\u00b170<\/td>\n65<\/td>\n10<\/td>\n<\/tr>\n
    600<\/td>\n24<\/td>\n400<\/td>\n\u00b170<\/td>\n65<\/td>\n10<\/td>\n<\/tr>\n
    700<\/td>\n28<\/td>\n400<\/td>\n\u00b175<\/td>\n70<\/td>\n10<\/td>\n<\/tr>\n
    800<\/td>\n32<\/td>\n450<\/td>\n\u00b175<\/td>\n70<\/td>\n8<\/td>\n<\/tr>\n
    900<\/td>\n36<\/td>\n450<\/td>\n\u00b175<\/td>\n70<\/td>\n8<\/td>\n<\/tr>\n
    1000<\/td>\n40<\/td>\n450<\/td>\n\u00b175<\/td>\n70<\/td>\n8<\/td>\n<\/tr>\n
    1200<\/td>\n48<\/td>\n500<\/td>\n\u00b180<\/td>\n70<\/td>\n6<\/td>\n<\/tr>\n
    1400<\/td>\n56<\/td>\n500<\/td>\n\u00b180<\/td>\n75<\/td>\n6<\/td>\n<\/tr>\n
    1600<\/td>\n64<\/td>\n500<\/td>\n\u00b180<\/td>\n75<\/td>\n6<\/td>\n<\/tr>\n
    1800<\/td>\n72<\/td>\n500<\/td>\n\u00b180<\/td>\n75<\/td>\n6<\/td>\n<\/tr>\n
    2000<\/td>\n80<\/td>\n550<\/td>\n\u00b185<\/td>\n75<\/td>\n4<\/td>\n<\/tr>\n
    2200<\/td>\n88<\/td>\n550<\/td>\n\u00b185<\/td>\n70<\/td>\n4<\/td>\n<\/tr>\n
    2400<\/td>\n96<\/td>\n550<\/td>\n\u00b185<\/td>\n70<\/td>\n4<\/td>\n<\/tr>\n
    2600<\/td>\n104<\/td>\n550<\/td>\n\u00b185<\/td>\n70<\/td>\n4<\/td>\n<\/tr>\n
    2800<\/td>\n112<\/td>\n550<\/td>\n\u00b185<\/td>\n70<\/td>\n4<\/td>\n<\/tr>\n
    3000<\/td>\n120<\/td>\n550<\/td>\n\u00b185<\/td>\n70<\/td>\n4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    Engineering Note:<\/strong> Dimensional specifications listed above conform to the Chinese National Standard (GB). As a fully integrated fluid equipment manufacturer, Henan Devel provides flexible production and comprehensive engineering customization capabilities; parameters, flange drillings, and face-to-face lengths can be fully modified and manufactured to meet ANSI\/ASME, DIN, BS, or JIS standards according to your specific engineering drawings.<\/p>\n

    Typical Applications<\/h3>\n

    DEVEL double sphere flexible joints are widely utilized in critical infrastructure requiring high displacement tolerance, including **Water Treatment Infrastructure**, **Heavy Industrial Pumping Stations**, **District HVAC Piping Loops**, **Marine & Shipboard Piping Layouts**, and chemical processing transport networks.<\/p>\n","protected":false},"excerpt":{"rendered":"

    DEVEL Double Sphere Rubber Expansion Joints are enginee […]<\/p>\n","protected":false},"featured_media":237,"template":"","meta":{"CBBTypography":[]},"product_brand":[],"product_cat":[27],"product_tag":[],"class_list":{"0":"post-236","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-rubber-expansion-joint","8":"first","9":"instock","10":"downloadable","11":"virtual","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/www.develfluid.com\/index.php\/wp-json\/wp\/v2\/product\/236","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.develfluid.com\/index.php\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.develfluid.com\/index.php\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.develfluid.com\/index.php\/wp-json\/wp\/v2\/media\/237"}],"wp:attachment":[{"href":"https:\/\/www.develfluid.com\/index.php\/wp-json\/wp\/v2\/media?parent=236"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.develfluid.com\/index.php\/wp-json\/wp\/v2\/product_brand?post=236"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.develfluid.com\/index.php\/wp-json\/wp\/v2\/product_cat?post=236"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.develfluid.com\/index.php\/wp-json\/wp\/v2\/product_tag?post=236"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}