{"product_id":"ames-3-inch-osy-reduced-pressure-backflow-preventer-valve-sku-3rposy","title":"Ames Maxim M400 3-Inch Reduced-Pressure Assembly | OS\u0026Y","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eThe Ames Maxim M400 3-inch reduced-pressure zone assembly provides backflow protection against backpressure and backsiphonage for health-hazard applications. This listing specifies horizontal installation with OS\u0026amp;Y gate shutoff valves.\u003c\/p\u003e\u003cp\u003eTwo independent Link Check modules, an intermediate differential-pressure relief valve, shutoff valves and test cocks provide testable protection. This is not a detector assembly with a metered bypass.\u003c\/p\u003e\u003ch2\u003eKey Features \u0026amp; Construction\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eType 304 Schedule 40 stainless-steel housing and sleeve with serviceable check modules.\u003c\/li\u003e\n\u003cli\u003e175 psi maximum working pressure; water temperature range of 33°F to 110°F.\u003c\/li\u003e\n\u003cli\u003eReversible silicone or EPDM check discs and stainless-steel springs, pins and fasteners.\u003c\/li\u003e\n\u003cli\u003eProvide relief-valve discharge drainage and service clearances required by the installation instructions.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetail\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eAmes Fire \u0026amp; Waterworks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eModel \/ Series\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eMaxim M400\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eStore SKU\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eM400OSY-0300\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eNominal Size\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e3 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eShutoffs \/ Connections\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eOS\u0026amp;Y gate shutoffs; external end connections: Not verified for this store SKU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eInstallation Pattern\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003ehorizontal; confirm configuration-specific drawings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eMaximum Working Pressure\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e175 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eWater Temperature Range\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e33°F–110°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eHousing and Sleeve\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eType 304 Schedule 40 stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eCheck Discs\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eReversible silicone or EPDM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eAgency Listings \u0026amp; Approvals\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eFamily sheet references ASSE 1013, CSA B64.4 and AWWA C511-97. USC scope is size- and orientation-specific. Confirm supplied assembly marks and local acceptance.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003eSubmittal \u0026amp; Installation Note:\u003c\/strong\u003e Verify local AHJ and water-authority requirements and consult the matching manufacturer installation instructions. Where used on a sprinkler supply, review applicable NFPA 13 installation\/testing provisions and NFPA 25 inspection, testing and maintenance requirements. Product-family references do not establish compliance for every project or configuration.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDocumentation:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.watts.com\/dfsmedia\/0533dbba17714b1ab581ab07a4cbb521\/35105-source\/639238776240000000\/es-a-m400-m400n-m400z.pdf\"\u003eDownload Ames Maxim Manufacturer Technical Data \u0026amp; Cut Sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e","brand":"Ames","offers":[{"title":"Default Title","offer_id":46202883899640,"sku":"M400OSY-0300","price":7455.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0682\/7183\/3336\/files\/10in_RP_WOSY_FxGrooved_1_1600.png?v=1791863029","url":"https:\/\/fireprotectionparts.net\/products\/ames-3-inch-osy-reduced-pressure-backflow-preventer-valve-sku-3rposy","provider":"Fire Protection Parts","version":"1.0","type":"link"}