{"id":249,"date":"2026-05-12T23:46:13","date_gmt":"2026-05-12T15:46:13","guid":{"rendered":"https:\/\/www.develfluid.com\/?post_type=product&#038;p=249"},"modified":"2026-05-13T19:42:22","modified_gmt":"2026-05-13T11:42:22","slug":"clamp-type-rubber-expansion-joint","status":"publish","type":"product","link":"https:\/\/www.develfluid.com\/index.php\/product\/clamp-type-rubber-expansion-joint\/","title":{"rendered":"Clamp type rubber expansion joint"},"content":{"rendered":"<p style=\"font-size: 15px; line-height: 1.8; color: #000000; font-family: Arial, sans-serif; margin-bottom: 25px;\"><strong>DEVEL Clamp-Type Rubber Expansion Joints<\/strong> represent a weight-optimized, boltless flexible connector engineering solution designed to accommodate multi-axis piping movements while isolating mechanical vibrations. By substituting heavy standard steel mating flanges with high-tensile stainless steel clamps, this design provides a compact profile that drastically minimizes structural weight and simplifies pipeline installation tolerances.<\/p>\n<h3 style=\"font-size: 16px; font-weight: bold; margin-top: 20px; margin-bottom: 12px; color: #000000; font-family: Arial, sans-serif;\">Key Structural &amp; Operational Features<\/h3>\n<ul style=\"font-size: 14px; line-height: 1.7; color: #000000; font-family: Arial, sans-serif; margin-left: 20px; margin-bottom: 30px; padding-left: 0;\">\n<li style=\"margin-bottom: 6px;\"><strong>Weight-Optimized Boltless Geometry:<\/strong> Eliminates conventional backing flanges and heavy fasteners, making it highly suitable for spatial-restricted areas and weight-sensitive modern pipeline layouts.<\/li>\n<li style=\"margin-bottom: 6px;\"><strong>Negligible Reactive Counter-Thrust Force:<\/strong> Structural elasticity absorbs high-frequency equipment vibration and acoustics without transmitting severe reactionary stress load back to pump headers or valve bodies.<\/li>\n<li style=\"margin-bottom: 6px;\"><strong>Multi-Material Pipe Adaptability:<\/strong> Engineered to provide comprehensive sealing performance across diverse piping substrates, including HDPE, PVC, Cast Iron, Carbon Steel, and Hot-Dip Galvanized Conduits.<\/li>\n<li style=\"margin-bottom: 6px;\"><strong>Reliable Sealing Integrity:<\/strong> Precision-molded elastomeric sealing face achieves uniform compression contact with the pipe outer diameter (OD) under heavy SS304 clamping tension, actively preventing process fluid leakage.<\/li>\n<\/ul>\n<h2 style=\"font-size: 18px; font-weight: bold; margin-top: 30px; margin-bottom: 15px; color: #000000; border-left: 4px solid #000000; padding-left: 10px; font-family: Arial, sans-serif;\">Technical Properties &amp; Operating Limits<\/h2>\n<div style=\"width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; margin-bottom: 35px; border: 1px solid #000000; border-radius: 4px;\">\n<table style=\"width: 100%; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 13px;\">\n<colgroup>\n<col style=\"width: 35%;\" \/>\n<col style=\"width: 65%;\" \/> <\/colgroup>\n<thead>\n<tr style=\"background-color: #f1f3f5; border-bottom: 2px solid #000000;\">\n<th style=\"padding: 10px 15px; font-weight: bold; color: #000000; text-align: center; border-right: 1px solid #dee2e6;\">Technical Parameter<\/th>\n<th style=\"padding: 10px 15px; font-weight: bold; color: #000000; text-align: center;\">Engineering Specification<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"border-bottom: 1px solid #dee2e6;\">\n<td style=\"padding: 10px 15px; background-color: #f8f9fa; font-weight: bold; color: #000000; text-align: center; border-right: 1px solid #dee2e6;\">Product Identification<\/td>\n<td style=\"padding: 10px 15px; color: #000000; text-align: center;\">Clamp-Type Rubber Expansion Joint (Slip-on Flexible Bellows Coupling)<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #dee2e6;\">\n<td style=\"padding: 10px 15px; background-color: #f8f9fa; font-weight: bold; color: #000000; text-align: center; border-right: 1px solid #dee2e6;\">Clamping Mechanism Material<\/td>\n<td style=\"padding: 10px 15px; color: #000000; font-weight: bold; text-align: center;\">Heavy-duty Stainless Steel 304 \/ SS316 (Worm Gear or Heavy T-Bolt design)<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #dee2e6;\">\n<td style=\"padding: 10px 15px; background-color: #f8f9fa; font-weight: bold; color: #000000; text-align: center; border-right: 1px solid #dee2e6;\">Maximum Working Pressure<\/td>\n<td style=\"padding: 10px 15px; color: #000000; text-align: center;\">PN \u2264 0.4 MPa (Low to Medium Pressure Applications)<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #dee2e6;\">\n<td style=\"padding: 10px 15px; background-color: #f8f9fa; font-weight: bold; color: #000000; text-align: center; border-right: 1px solid #dee2e6;\">Elastomeric Compound Matrix<\/td>\n<td style=\"padding: 10px 15px; color: #000000; text-align: center;\">NR (Natural Rubber), EPDM, High-Temperature Silicone, NBR (Nitrile), Neoprene<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #dee2e6;\">\n<td style=\"padding: 10px 15px; background-color: #f8f9fa; font-weight: bold; color: #000000; text-align: center; border-right: 1px solid #dee2e6;\">Target Engineering Environment<\/td>\n<td style=\"padding: 10px 15px; color: #000000; text-align: center;\">Commercial Construction, HVAC, Water Treatment Utilities, Industrial Fire Protection, Power Distribution<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2 style=\"font-size: 18px; font-weight: bold; margin-top: 30px; margin-bottom: 15px; color: #000000; border-left: 4px solid #000000; padding-left: 10px; font-family: Arial, sans-serif;\">Dimensional Matrices &amp; Movement Capabilities<\/h2>\n<div style=\"width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid #000000; border-radius: 4px; margin-bottom: 12px;\">\n<table style=\"width: 100%; border-collapse: collapse; min-width: 750px; font-family: Arial, sans-serif; font-size: 12px; table-layout: fixed;\">\n<colgroup>\n<col style=\"width: 120px;\" \/>\n<col style=\"width: 150px;\" \/>\n<col style=\"width: 160px;\" \/>\n<col style=\"width: 160px;\" \/>\n<col style=\"width: 160px;\" \/> <\/colgroup>\n<thead>\n<tr style=\"background-color: #f1f3f5; border-bottom: 2px solid #000000;\">\n<th style=\"padding: 10px 6px; border-right: 1px solid #dee2e6; font-weight: bold; color: #000000; font-size: 13px; text-align: center;\">Nominal Diameter<br \/>\n<span style=\"font-size: 11px; font-weight: normal;\">(DN &#8211; mm)<\/span><\/th>\n<th style=\"padding: 10px 6px; border-right: 1px solid #dee2e6; font-weight: bold; color: #000000; font-size: 13px; text-align: center;\">Face-to-Face Length<br \/>\n<span style=\"font-size: 11px; font-weight: normal;\">(L &#8211; mm)<\/span><\/th>\n<th style=\"padding: 10px 6px; border-right: 1px solid #dee2e6; font-weight: bold; color: #000000; font-size: 13px; text-align: center;\">Axial Extension<br \/>\n<span style=\"font-size: 11px; font-weight: normal;\">(mm)<\/span><\/th>\n<th style=\"padding: 10px 6px; border-right: 1px solid #dee2e6; font-weight: bold; color: #000000; font-size: 13px; text-align: center;\">Axial Compression<br \/>\n<span style=\"font-size: 11px; font-weight: normal;\">(mm)<\/span><\/th>\n<th style=\"padding: 10px 6px; font-weight: bold; color: #000000; font-size: 13px; text-align: center;\">Lateral Movement<br \/>\n<span style=\"font-size: 11px; font-weight: normal;\">(mm)<\/span><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"border-bottom: 1px solid #dee2e6; color: #000000;\">\n<td style=\"padding: 8px 6px; border-right: 1px solid #dee2e6; font-weight: bold; background-color: #fcfcfc; text-align: center;\">DN25 \u2013 DN50<\/td>\n<td style=\"padding: 8px 6px; border-right: 1px solid #dee2e6; text-align: center;\">150<\/td>\n<td style=\"padding: 8px 6px; border-right: 1px solid #dee2e6; text-align: center;\">7<\/td>\n<td style=\"padding: 8px 6px; border-right: 1px solid #dee2e6; text-align: center;\">10<\/td>\n<td style=\"padding: 8px 6px; text-align: center;\">10<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #dee2e6; background-color: #f8f9fa; color: #000000;\">\n<td style=\"padding: 8px 6px; border-right: 1px solid #dee2e6; font-weight: bold; background-color: #f5f6f7; text-align: center;\">DN65 \u2013 DN100<\/td>\n<td style=\"padding: 8px 6px; border-right: 1px solid #dee2e6; text-align: center;\">150<\/td>\n<td style=\"padding: 8px 6px; border-right: 1px solid #dee2e6; text-align: center;\">10<\/td>\n<td style=\"padding: 8px 6px; border-right: 1px solid #dee2e6; text-align: center;\">15<\/td>\n<td style=\"padding: 8px 6px; text-align: center;\">12<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #dee2e6; color: #000000;\">\n<td style=\"padding: 8px 6px; border-right: 1px solid #dee2e6; font-weight: bold; background-color: #fcfcfc; text-align: center;\">DN125 \u2013 DN200<\/td>\n<td style=\"padding: 8px 6px; border-right: 1px solid #dee2e6; text-align: center;\">180<\/td>\n<td style=\"padding: 8px 6px; border-right: 1px solid #dee2e6; text-align: center;\">12<\/td>\n<td style=\"padding: 8px 6px; border-right: 1px solid #dee2e6; text-align: center;\">20<\/td>\n<td style=\"padding: 8px 6px; text-align: center;\">14<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #dee2e6; background-color: #f8f9fa; color: #000000;\">\n<td style=\"padding: 8px 6px; border-right: 1px solid #dee2e6; font-weight: bold; background-color: #f5f6f7; text-align: center;\">DN250 \u2013 DN400<\/td>\n<td style=\"padding: 8px 6px; border-right: 1px solid #dee2e6; text-align: center;\">200<\/td>\n<td style=\"padding: 8px 6px; border-right: 1px solid #dee2e6; text-align: center;\">15<\/td>\n<td style=\"padding: 8px 6px; border-right: 1px solid #dee2e6; text-align: center;\">25<\/td>\n<td style=\"padding: 8px 6px; text-align: center;\">22<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #dee2e6; color: #000000;\">\n<td style=\"padding: 8px 6px; border-right: 1px solid #dee2e6; font-weight: bold; background-color: #fcfcfc; text-align: center;\">DN450 \u2013 DN600<\/td>\n<td style=\"padding: 8px 6px; border-right: 1px solid #dee2e6; text-align: center;\">250<\/td>\n<td style=\"padding: 8px 6px; border-right: 1px solid #dee2e6; text-align: center;\">20<\/td>\n<td style=\"padding: 8px 6px; border-right: 1px solid #dee2e6; text-align: center;\">30<\/td>\n<td style=\"padding: 8px 6px; text-align: center;\">25<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #dee2e6; background-color: #f8f9fa; color: #000000;\">\n<td style=\"padding: 8px 6px; border-right: 1px solid #dee2e6; font-weight: bold; background-color: #f5f6f7; text-align: center;\">DN700 \u2013 DN1000<\/td>\n<td style=\"padding: 8px 6px; text-align: center; color: #000000; font-style: italic; font-weight: bold;\" colspan=\"4\">Fully Customized Based on Engineering Blueprints &amp; Working Environment Tolerance<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3 style=\"font-size: 15px; font-weight: bold; margin-top: 25px; margin-bottom: 12px; color: #000000; font-family: Arial, sans-serif;\">Critical Field Installation Directives<\/h3>\n<ol style=\"font-size: 14px; line-height: 1.7; color: #000000; font-family: Arial, sans-serif; margin-left: 20px; padding-left: 0; margin-bottom: 25px;\">\n<li style=\"margin-bottom: 5px;\"><strong>Tolerance Evaluation:<\/strong> Before locking parameters, verify that the raw outer diameter (OD) of the mating pipe perfectly aligns with the exact internal dimensions of the DEVEL flexible coupling.<\/li>\n<li style=\"margin-bottom: 5px;\"><strong>Torque Calibration:<\/strong> Smoothly slide the elastomeric bellows sleeve over the pipe interface, then tighten the high-strength SS304 clamping bands evenly to achieve an absolute compression leak-proof seal without cutting the rubber matrix.<\/li>\n<li style=\"margin-bottom: 5px;\"><strong>Operational Modification:<\/strong> For non-standard installation face-to-face gaps, continuous thermal stress, or specialized media handling (high concentration acid\/alkali\/high temperature), specific inner liner upgrades must be finalized during ordering phase.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>DEVEL Clamp-Type Rubber Expansion Joints represent a we [&hellip;]<\/p>\n","protected":false},"featured_media":252,"template":"","meta":{"CBBTypography":[]},"product_brand":[],"product_cat":[27],"product_tag":[],"class_list":{"0":"post-249","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-rubber-expansion-joint","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/www.develfluid.com\/index.php\/wp-json\/wp\/v2\/product\/249","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\/252"}],"wp:attachment":[{"href":"https:\/\/www.develfluid.com\/index.php\/wp-json\/wp\/v2\/media?parent=249"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.develfluid.com\/index.php\/wp-json\/wp\/v2\/product_brand?post=249"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.develfluid.com\/index.php\/wp-json\/wp\/v2\/product_cat?post=249"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.develfluid.com\/index.php\/wp-json\/wp\/v2\/product_tag?post=249"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}