{"product_id":"flex-hose-3x7nnd-neoprene-double-sphere-connector-flange","title":"Flex-hose 3x7nnd Neoprene Double Sphere Connector Flange","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe FLEX-HOSE 3x7nnd is a neoprene double sphere flexible pipe connector designed to absorb vibration, reduce noise, and compensate for minor misalignment in piping systems. Built with a flanged end connection, it measures 3 inches in bore diameter and 7 inches in face-to-face length. Rated at 150 psi, this connector suits pressurized fluid and HVAC hydronic applications where flexible movement and joint isolation are required. Plumbers, pipefitters, and mechanical contractors install this type of fitting as part of pump connections, chiller hookups, and other piping assemblies where rigid joints would transmit damaging vibration or thermal movement.\u003c\/p\u003e\u003cp\u003eThis connector is appropriate for commercial and residential mechanical systems including hydronic heating and cooling loops, chilled water systems, condenser water lines, and domestic water distribution where a flanged flexible joint is specified. The double sphere neoprene body provides greater angular deflection and vibration absorption compared to single sphere designs, making it a common choice at pump suction and discharge connections. Installations following ASHRAE, ASME, or local mechanical codes will typically require a flexible connector at rotating equipment interfaces.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eDouble sphere neoprene body for enhanced vibration isolation and angular deflection\u003c\/li\u003e\n\u003cli\u003e150 psi pressure rating suitable for standard commercial hydronic and water systems\u003c\/li\u003e\n\u003cli\u003e3-inch bore with flanged end connections for direct bolt-up to mating flanges\u003c\/li\u003e\n\u003cli\u003e7-inch face-to-face length accommodates standard pump connection spacing\u003c\/li\u003e\n\u003cli\u003eNeoprene construction provides resistance to water, oils, and moderate temperature ranges common in HVAC piping\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation flexible connector for 3-inch flanged piping systems in commercial and residential mechanical applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a licensed plumber or pipefitter in accordance with applicable mechanical and plumbing codes. Isolate and depressurize the piping system fully before removing any existing connector or breaking a flanged joint. Do not overtighten flange bolts in an uneven pattern — follow a cross-pattern bolt sequence to seat the flange faces evenly against the connector. Flexible connectors should not be used as the sole means of correcting gross pipe misalignment beyond the connector's rated deflection range.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore Diameter\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFace-to-Face Length\u003c\/strong\u003e: 7 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Rating\u003c\/strong\u003e: 150 psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Material\u003c\/strong\u003e: Neoprene\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSphere Configuration\u003c\/strong\u003e: Double Sphere\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Connection Type\u003c\/strong\u003e: Flange\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: FLEX-HOSE\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 3x7nnd\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FLEX-HOSE","offers":[{"title":"Default Title","offer_id":51268784718130,"sku":"3X7NND","price":221.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/308912086.jpg?v=1780705685","url":"https:\/\/voomisupply.com\/products\/flex-hose-3x7nnd-neoprene-double-sphere-connector-flange","provider":"Voomi Supply","version":"1.0","type":"link"}