{"product_id":"reliable-window-nozzle-fmw5b-fmwb","title":"Reliable Window Nozzle | FMW5B \u0026 FMWB Ordering Options","description":"\u003cdiv\u003e\n\u003cp\u003eThe Reliable Window Nozzle, including ordering references FMW5B and FMWB, functions as a specialized discharge component designed for engineered fire protection systems to provide window protection and prevent fire spread. This component installs within fixed water spray or deluge fire suppression assemblies to deliver targeted water distribution across glass surfaces, creating an effective thermal barrier.\u003c\/p\u003e \u003cp\u003eTo satisfy strict code compliance and system design requirements, installations must adhere to the parameters established by NFPA 13 for the installation of sprinkler systems and related water distribution components. Contractors must match the nozzle’s documented K-factor, operating pressure, and required flow to the hydraulic calculations of the engineered fire protection system specification, ensuring proper placement, spacing, orientation, and spray distribution as outlined in the manufacturer's technical documentation.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eTargeted Water Distribution:\u003c\/strong\u003e Directs a specific spray pattern across windows to defend openings against exterior and interior fire spread.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFlexible Ordering Options:\u003c\/strong\u003e Available in separate selectable ordering references including FMW5B and FMWB to match specific system layouts.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHydraulic Compatibility:\u003c\/strong\u003e Engineered to integrate with calculated fire protection systems requiring exact K-factors, operating pressures, and flow rates.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eJob Site Verification:\u003c\/strong\u003e Requires confirmation of connection size, thread standard, material, finish, and manufacturer model identification prior to procurement.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ctable\u003e \u003cthead\u003e \u003ctr\u003e \u003cth\u003e\u003cstrong\u003eTechnical Specification\u003c\/strong\u003e\u003c\/th\u003e \u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eManufacturer \/ Brand\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eReliable Sprinkler\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eModel \/ Series Number \/ SIN\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eFMW5B \u0026amp; FMWB (R041X)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eConnection \/ Thread Size \u0026amp; Type\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eN\/A\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003ePressure Rating (WWP \/ Max Working Pressure)\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eN\/A\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eK-Factor\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eN\/A\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eTemperature Rating \/ Response Type\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eN\/A\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eMaterial \/ Body Construction\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eN\/A\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eAgency Listings \u0026amp; Approvals\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eFM Approved\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eApplicable NFPA Standards\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eNFPA 13\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e\n\u003c\/table\u003e \u003cp\u003eAlways verify local Authority Having Jurisdiction (AHJ) requirements and \u003ca href=\"#\"\u003eConsult Reliable’s product catalog and list price book\u003c\/a\u003e as a general ordering reference before finalizing equipment purchases. Obtain the exact part number's technical and installation documentation to establish correct placement, spacing, orientation, and spray distribution.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eDocumentation:\u003c\/strong\u003e \u003ca href=\"#\"\u003eDownload Manufacturer Technical Data \u0026amp; Cut Sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Reliable Sprinkler","offers":[{"title":"5\/8 3\/4 Thread","offer_id":48620690374904,"sku":"FMW5B","price":56.99,"currency_code":"USD","in_stock":true},{"title":"K6.6","offer_id":48620690407672,"sku":"FMWB","price":54.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0682\/7183\/3336\/files\/reliable-fm-k66-fire-window-nozzle-r041x-for-building-safety-2121054.jpg?v=1780606327","url":"https:\/\/fireprotectionparts.net\/products\/reliable-window-nozzle-fmw5b-fmwb","provider":"Fire Protection Parts","version":"1.0","type":"link"}