{"product_id":"vk449-residential-dry-horizontal-sidewall-sprinkler-4-freeze-resistant","title":"VK449 Residential Dry Horizontal Sidewall Sprinkler 4\" Freeze Resistant","description":"\u003cdiv\u003e\n\u003cp\u003eThe Viking VK449 Residential Dry Horizontal Sidewall Sprinkler provides dedicated fire suppression for residential spaces vulnerable to freezing conditions. Designed for installation in dry pipe sprinkler systems, this component prevents water from sitting in the active piping until the system activates, effectively eliminating pipe-freeze risks and subsequent water damage in unheated areas like garages and exterior corridors.\u003c\/p\u003e \u003cp\u003eEngineered in compliance with \u003cstrong\u003eNFPA 13D\u003c\/strong\u003e standards for residential fire sprinkler systems, the VK449 satisfies strict national fire safety codes for reliable activation and suppression. This model is \u003cstrong\u003eUL Listed\u003c\/strong\u003e and \u003cstrong\u003eFM Approved\u003c\/strong\u003e to ensure verified third-party quality and compliance for commercial trade installations.\u003c\/p\u003e \u003ch2\u003eKey Features \u0026amp; Construction\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eDry Barrel Design:\u003c\/strong\u003e Limits water presence within the piping until thermal activation, preventing pipe bursts in low-temperature environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHorizontal Sidewall Orientation:\u003c\/strong\u003e Directs discharge for optimal coverage in corridors, garages, and smaller residential rooms.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Built with robust materials designed to withstand harsh residential environments and low-temperature conditions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCustom Length Availability:\u003c\/strong\u003e Offered in multiple extension lengths including 4\", 6\", 12\", 18\", and 24\" options to match exact wall thicknesses.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFinish \u0026amp; Temperature Options:\u003c\/strong\u003e Available in chrome and white finishes with specific temperature ratings of 155 °F and 200 °F.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eTechnical Specifications \u0026amp; Compliance Table\u003c\/h2\u003e\n\u003ctable\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eManufacturer \/ Brand\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eViking\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eModel \/ Series Number \/ SIN\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eVK449 (SIN VK449)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eConnection \/ Thread Size \u0026amp; Type\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e1-inch NPT\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003ePressure Rating (WWP \/ Max Working Pressure)\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e175 psi (12 bar) maximum rated pressure\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eK-Factor\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eK4.0\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eTemperature Rating \/ Response Type\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e155 °F \/ 200 °F\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eMaterial \/ Body Construction\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eFrame casting: QM brass or brass UNS-C84400; tube: ERW hydraulic steel tube; inlet and barrel end: QM brass; barrel: steel pipe UNS-G10260, electrodeposited epoxy base finish\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eAgency Listings \u0026amp; Approvals\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eUL Listed, FM Approved (cULus Listed)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eApplicable NFPA Standards\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eNFPA 13D\u003c\/td\u003e \u003c\/tr\u003e\n\u003c\/table\u003e \u003cp\u003eContractors must verify local Authority Having Jurisdiction (AHJ) requirements and consult manufacturer technical data sheets before beginning installation. Note that custom dry length units are non-cancellable and non-refundable.\u003c\/p\u003e \n\u003cp\u003e\u003cstrong\u003eProduct Specifications:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.vikinggroupinc.com\/sites\/default\/files\/migrated\/061721.pdf\" target=\"_blank\" rel=\"noopener\"\u003eManufacturer Technical Data (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Fire Protection Parts","offers":[{"title":"Chrome \/ 155 °F (68 °C) \/ 6 in.","offer_id":68031305941082,"sku":"24961FB06","price":174.99,"currency_code":"USD","in_stock":true},{"title":"Chrome \/ 155 °F (68 °C) \/ 18 in.","offer_id":68031305973850,"sku":"24961FB18","price":213.99,"currency_code":"USD","in_stock":true},{"title":"Chrome \/ 155 °F (68 °C) \/ 24 in.","offer_id":68031306006618,"sku":"24961FB24","price":244.99,"currency_code":"USD","in_stock":true},{"title":"Chrome \/ 200 °F (93 °C) \/ 6 in.","offer_id":68031306039386,"sku":"24961FE06","price":174.99,"currency_code":"USD","in_stock":true},{"title":"Chrome \/ 200 °F (93 °C) \/ 18 in.","offer_id":68031306072154,"sku":"24961FE18","price":213.99,"currency_code":"USD","in_stock":true},{"title":"Chrome \/ 200 °F (93 °C) \/ 24 in.","offer_id":68031306104922,"sku":"24961FE24","price":244.99,"currency_code":"USD","in_stock":true},{"title":"White \/ 155 °F (68 °C) \/ 6 in.","offer_id":68031306137690,"sku":"24961MB\/W06","price":174.99,"currency_code":"USD","in_stock":true},{"title":"White \/ 155 °F (68 °C) \/ 18 in.","offer_id":68031306170458,"sku":"24961MB\/W18","price":213.99,"currency_code":"USD","in_stock":true},{"title":"White \/ 155 °F (68 °C) \/ 24 in.","offer_id":68031306203226,"sku":"24961MB\/W24","price":244.99,"currency_code":"USD","in_stock":true},{"title":"White \/ 200 °F (93 °C) \/ 6 in.","offer_id":68031306235994,"sku":"24961ME\/W06","price":174.99,"currency_code":"USD","in_stock":true},{"title":"White \/ 200 °F (93 °C) \/ 18 in.","offer_id":68031306268762,"sku":"24961ME\/W18","price":213.99,"currency_code":"USD","in_stock":true},{"title":"White \/ 200 °F (93 °C) \/ 24 in.","offer_id":68031306301530,"sku":"24961ME\/W24","price":244.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0655\/0637\/7818\/files\/vk449-res-rec-hs-899320.png?v=1794374429","url":"https:\/\/patriotsafesource.com\/products\/vk449-residential-dry-horizontal-sidewall-sprinkler-4-freeze-resistant","provider":"Patriot SafeSource","version":"1.0","type":"link"}