{"product_id":"viking-model-j-1-alarm-check-valve","title":"Viking Model J-1 Alarm Check Valve","description":"\u003cdiv\u003e\n\u003cp\u003eThe Viking Model J-1 alarm check valve serves as a primary check valve component within wet pipe fire sprinkler systems. Installed directly in the main riser assembly, this valve stops reverse water flow and detects system demand during a sustained water flow event to trigger audible or electrical alarms.\u003c\/p\u003e \u003cp\u003eCompliance with NFPA 13 standards is maintained by using listed alarm check assemblies that interface correctly with pressure switches and water motor alarms. Trade contractors and facility managers specify this valve in system fabrication and retrofit projects to satisfy life safety codes and protect system integrity.\u003c\/p\u003e \u003ch2\u003eKey Features \u0026amp; Construction\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eSize Availability:\u003c\/b\u003e Offered in 3-inch, 4-inch, 6-inch, and 8-inch nominal sizes to match pipe diameters on your drawings.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eConnection Configurations:\u003c\/b\u003e Built in Flange x Flange (F x F), Flange x Groove (F x G), and Groove x Groove (G x G) options for flexible piping integration.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSKU Variety:\u003c\/b\u003e Twelve unique ordering references prevent mix-ups between sizing and connection types on your parts schedule.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSystem Integration:\u003c\/b\u003e Accurately detects system demand to initiate audible or electrical alarms during sustained water flow.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eTechnical Specifications \u0026amp; Compliance Table\u003c\/h2\u003e\n\u003ctable\u003e \u003cthead\u003e \u003ctr\u003e \u003cth\u003e\u003cb\u003eParameter\u003c\/b\u003e\u003c\/th\u003e \u003cth\u003e\u003cb\u003eSpecification Details\u003c\/b\u003e\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003e\u003cb\u003eManufacturer \/ Brand\u003c\/b\u003e\u003c\/td\u003e \u003ctd\u003eViking\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cb\u003eModel \/ Series Number \/ SIN\u003c\/b\u003e\u003c\/td\u003e \u003ctd\u003eModel J-1 Alarm Check Valve\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cb\u003eConnection \/ Thread Size \u0026amp; Type\u003c\/b\u003e\u003c\/td\u003e \u003ctd\u003e3\", 4\", 6\", and 8\" (F x F, F x G, G x G configurations)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cb\u003ePressure Rating (WWP \/ Max Working Pressure)\u003c\/b\u003e\u003c\/td\u003e \u003ctd\u003e300 psi (20.7 bar) water working pressure\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cb\u003eMaterial \/ Body Construction\u003c\/b\u003e\u003c\/td\u003e \u003ctd\u003eDuctile iron body, ASTM A536 (65-45-12)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cb\u003eAgency Listings \u0026amp; Approvals\u003c\/b\u003e\u003c\/td\u003e \u003ctd\u003eUL Listed \/ FM Approved\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cb\u003eApplicable NFPA Standards\u003c\/b\u003e\u003c\/td\u003e \u003ctd\u003eNFPA 13\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e\n\u003c\/table\u003e \u003cp\u003eConfirm all included trim, alarm components, connection details, operating limits, and approvals against documentation for the exact valve before purchasing to ensure full compatibility with local Authority Having Jurisdiction (AHJ) requirements.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eDocumentation:\u003c\/strong\u003e View the existing Model J-1 specification reference\u003c\/p\u003e\n\u003ctable\u003e \u003cthead\u003e \u003ctr\u003e \u003cth\u003e\u003cb\u003eParameter\u003c\/b\u003e\u003c\/th\u003e \u003cth\u003e\u003cb\u003eSpecification Details\u003c\/b\u003e\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003e\u003cb\u003eManufacturer \/ Brand\u003c\/b\u003e\u003c\/td\u003e \u003ctd\u003eViking\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cb\u003eModel \/ Series Number \/ SIN\u003c\/b\u003e\u003c\/td\u003e \u003ctd\u003eModel J-1 Alarm Check Valve\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cb\u003eConnection \/ Thread Size \u0026amp; Type\u003c\/b\u003e\u003c\/td\u003e \u003ctd\u003e3\", 4\", 6\", and 8\" (F x F, F x G, G x G configurations)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cb\u003ePressure Rating (WWP \/ Max Working Pressure)\u003c\/b\u003e\u003c\/td\u003e \u003ctd\u003e300 psi (20.7 bar) water working pressure\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cb\u003eMaterial \/ Body Construction\u003c\/b\u003e\u003c\/td\u003e \u003ctd\u003eDuctile iron body, ASTM A536 (65-45-12)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cb\u003eAgency Listings \u0026amp; Approvals\u003c\/b\u003e\u003c\/td\u003e \u003ctd\u003eUL Listed \/ FM Approved\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cb\u003eApplicable NFPA Standards\u003c\/b\u003e\u003c\/td\u003e \u003ctd\u003eNFPA 13\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Specifications:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.vikinggroupinc.com\/sites\/default\/files\/2026-09\/062293_03.pdf\" target=\"_blank\" rel=\"noopener\"\u003eViking Model J-1 alarm check valve technical data (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Viking","offers":[{"title":"3 in. \/ F x F","offer_id":46372579246328,"sku":"08235","price":1380.99,"currency_code":"USD","in_stock":true},{"title":"3 in. \/ F x G","offer_id":46372579377400,"sku":"08236","price":1380.99,"currency_code":"USD","in_stock":true},{"title":"3 in. \/ G x G","offer_id":46372579508472,"sku":"08237","price":1303.99,"currency_code":"USD","in_stock":true},{"title":"4 in. \/ F x F","offer_id":46372579279096,"sku":"08238","price":1380.99,"currency_code":"USD","in_stock":true},{"title":"4 in. \/ F x G","offer_id":46372579410168,"sku":"08239","price":1380.99,"currency_code":"USD","in_stock":true},{"title":"4 in. \/ G x G","offer_id":46372579541240,"sku":"08240","price":1303.99,"currency_code":"USD","in_stock":true},{"title":"6 in. \/ F x F","offer_id":46372579311864,"sku":"08241","price":1725.99,"currency_code":"USD","in_stock":true},{"title":"6 in. \/ F x G","offer_id":46372579442936,"sku":"08242","price":1725.99,"currency_code":"USD","in_stock":true},{"title":"6 in. \/ G x G","offer_id":46372579574008,"sku":"08243","price":1541.99,"currency_code":"USD","in_stock":true},{"title":"8 in. \/ F x F","offer_id":46372579344632,"sku":"08244","price":2385.99,"currency_code":"USD","in_stock":true},{"title":"8 in. \/ F x G","offer_id":46372579475704,"sku":"08245","price":2385.99,"currency_code":"USD","in_stock":true},{"title":"8 in. \/ G x G","offer_id":46372579606776,"sku":"08246","price":2127.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0682\/7183\/3336\/files\/model-j-1-alarm-check-valve-153304.png?v=1776005948","url":"https:\/\/fireprotectionparts.net\/products\/viking-model-j-1-alarm-check-valve","provider":"Fire Protection Parts","version":"1.0","type":"link"}