{"product_id":"potter-vsr-waterflow-switch-with-retard-for-fire-systems","title":"Potter VSR Waterflow Switch with Retard for Fire Systems","description":"\u003cdiv\u003e\n\u003cp\u003eThe Potter VSR Waterflow Switch with Retard detects sustained water movement within commercial fire sprinkler piping, initiating rapid emergency alarms while preventing nuisance trips from pressure surges. Designed for seamless inline installation, this unit mounts directly into wet pipe, dry pipe, pre-action, and deluge suppression assemblies to ensure continuous life safety monitoring.\u003c\/p\u003e \u003cp\u003eThis waterflow switch satisfies the strict design and performance mandates of NFPA 13, 13D, 13R, and 72. Its adjustable pneumatic retard mechanism prevents false alarms caused by transient pressure fluctuations, ensuring the system activates only during verified emergency events.\u003c\/p\u003e \u003ch2\u003eKey Features \u0026amp; Construction\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eSensitive Vane Detection:\u003c\/b\u003e Accurately senses water flow rates starting at 10 gallons per minute (38 LPM).\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eAdjustable Retard Mechanism:\u003c\/b\u003e Pneumatic retard adjusts from 0 to 90 seconds to filter out transient pressure surges.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eDual SPDT Switches:\u003c\/b\u003e Equipped with two sets of single-pole, double-throw snap-action switches for independent alarm activation and auxiliary signaling.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eRugged Body Construction:\u003c\/b\u003e Built with heavy-duty ductile iron and corrosion-resistant copper and CPVC components for demanding industrial and commercial environments.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSystem Versatility:\u003c\/b\u003e Integrates smoothly across wet pipe, dry pipe, pre-action, and deluge sprinkler assemblies.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eTechnical Specifications \u0026amp; Compliance\u003c\/h2\u003e\n\u003ctable\u003e \u003ctr\u003e \u003ctd\u003e\u003cb\u003eManufacturer \/ Brand\u003c\/b\u003e\u003c\/td\u003e \u003ctd\u003ePotter Electric Signal\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cb\u003eModel \/ Series Number \/ SIN\u003c\/b\u003e\u003c\/td\u003e \u003ctd\u003ePotter VSR Series\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cb\u003eConnection \/ Thread Size \u0026amp; Type\u003c\/b\u003e\u003c\/td\u003e \u003ctd\u003eUnion fittings available\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cb\u003eMaterial \/ Body Construction\u003c\/b\u003e\u003c\/td\u003e \u003ctd\u003eDuctile iron with copper and CPVC components\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, NFPA 13D, NFPA 13R, NFPA 72\u003c\/td\u003e \u003c\/tr\u003e\n\u003c\/table\u003e \u003cp\u003eVerify all installation parameters with your local Authority Having Jurisdiction (AHJ) and review system design requirements prior to mounting.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eProduct Specifications:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.pottersignal.com\/product\/datasheet\/5401601_VSR-CR.pdf\" target=\"_blank\" rel=\"noopener\"\u003ePotter VSR-CR Manufacturer Technical Data (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Fire Protection Parts","offers":[{"title":"2-1\/2\"","offer_id":68031327404122,"sku":"VSRCR-0250","price":500.99,"currency_code":"USD","in_stock":true},{"title":"3 in.","offer_id":68031327436890,"sku":"VSRCR-0300","price":500.99,"currency_code":"USD","in_stock":true},{"title":"6 in.","offer_id":68031327469658,"sku":"VSRCR-0600","price":500.99,"currency_code":"USD","in_stock":true},{"title":"8 in.","offer_id":68031327502426,"sku":"VSRCR-0800","price":573.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0655\/0637\/7818\/files\/studio_output_cccd8e5a-985b-4d70-90c0-2c65f0bce343.jpg?v=1794374567","url":"https:\/\/patriotsafesource.com\/products\/potter-vsr-waterflow-switch-with-retard-for-fire-systems","provider":"Patriot SafeSource","version":"1.0","type":"link"}