{"product_id":"ames-3-inch-double-check-backflow-preventer-valve-sku300","title":"Ames C300N 3-Inch Double Check Detector Assembly | Butterfly Shutoffs","description":"\u003cdiv\u003e\n\u003cp\u003eThe Ames C300N 3-inch double check detector assembly provides backflow protection for non-health-hazard, non-potable service applications such as fire sprinkler lines. It combines two independent check modules with shutoff valves, test cocks, and a metered bypass.\u003c\/p\u003e\n\u003cp\u003eThe bypass meter registers water use to help identify unauthorized draw from the fire line. It is not an electronic backflow-event alarm. The housing and access sleeve are 304 Schedule 40 stainless steel. This is the N-pattern configuration.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003ctd\u003eAmes Fire \u0026amp; Waterworks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSeries\u003c\/th\u003e\n\u003ctd\u003eC300N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStore SKU\u003c\/th\u003e\n\u003ctd\u003eC300NBFxG-0300\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNominal Size\u003c\/th\u003e\n\u003ctd\u003e3 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShutoff Configuration\u003c\/th\u003e\n\u003ctd\u003eGrooved butterfly shutoff valves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHousing and Sleeve\u003c\/th\u003e\n\u003ctd\u003e304 Schedule 40 stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaximum Working Pressure\u003c\/th\u003e\n\u003ctd\u003e175 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater Temperature Range\u003c\/th\u003e\n\u003ctd\u003e33°F to 140°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCheck Discs\u003c\/th\u003e\n\u003ctd\u003eReversible silicone or EPDM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eThese assemblies are for non-potable service and are not for systems providing water for human consumption. A supervisory switch is an option on the OS\u0026amp;Y version, not an automatic inclusion in every assembly. The bypass is not described as a provision for servicing the assembly while keeping the protected line in operation.\u003c\/p\u003e\n\u003cp\u003eConfirm the selected configuration and project requirements with the manufacturer documentation and local Authority Having Jurisdiction before ordering or installation. Consult the full installation and safety instructions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer Reference:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.watts.com\/dfsmedia\/0533dbba17714b1ab581ab07a4cbb521\/35084-source\/639254036810000000\/es-a-c300-c300n-2510.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eAmes C300\/C300N Series Engineering Specification (2025, PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Ames","offers":[{"title":"Default Title","offer_id":46202881835256,"sku":"C300NBFxG-0300","price":6487.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0682\/7183\/3336\/files\/image_20261014_162645.jpg?v=1791973707","url":"https:\/\/fireprotectionparts.net\/products\/ames-3-inch-double-check-backflow-preventer-valve-sku300","provider":"Fire Protection Parts","version":"1.0","type":"link"}