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ES-A-Deringer 20 <br />Job Name <br />Job Location <br />Engineer <br />Approval <br />DeringerTm 20 <br />Double Check Valve Assembly <br />Sizes: 2""- 8" <br />The Deringer's 20 Double Check Valve Assembly is <br />designed to prevent non -health hazard pollutants from <br />entering the potable water supply system caused by <br />backpressure and/or backsiphonage conditions <br />Features <br />• Intergral shutoff valves indoor/outdoor application <br />• 100% stainless steel housing <br />• Tamperresistanttest cocks <br />• Patented Dual -action"^ check modules <br />- Poppet action at low flow <br />- Swing action at high flow <br />• Silicone elastomer check discs <br />• Prewired supervisory switches <br />• Flange adapters available <br />• IPS grooved ends <br />Specifications <br />The Deringer 20 Double Check Valve shall utilize two <br />independent Dual -action check modules and two <br />integral resiliently seated shut-off valves all of which <br />shall be contained within a single rigid valve housing <br />constructed entirely of 304 stainless steel. Both integral <br />shutoff valves shall include pre -wired supervisory tamper <br />switches contained within a weatherproof actuator hous- <br />ing approved for both indoor and outdoor use. Dual -action <br />check modules shall operate as a "poppet style" check <br />under low flow conditions, operate as a "swing style" <br />check under high flow conditions and utilize replaceable <br />silicone elastomer sealing discs. Assembly test cocks shall <br />be handle -less and operate via a tamper resistant actuator. <br />Assembly shall have a single full access service port and <br />cover with an "inline" replaceable elastomer seal. Assembly <br />shall be serviceable without special tools and approved for <br />both horizontal and vertical applications. <br />The information contained herein is not intended to replace the <br />full product installation and safety information available or the <br />experience of a trained product installer You are required to <br />thoroughly read all installation instructions and product safety <br />information before beginning the installation of this product, <br />Contractor <br />Approval <br />Contractor's P.O. No. <br />Representative <br />HORIZONTAL13 <br />Approved for Fire Protection, Waterworks, Plumbing, <br />and Irrigation Applications. <br />Materials <br />Valve Housing: <br />304 Stainless Steel <br />Valve Cover: <br />304 Stainless Steel <br />SOV Disks: <br />EPDM/304SS <br />SOV Shafts: <br />304 Stainless Steel <br />SOV Bearings: <br />Teflon°fluoropolymer/Bronze <br />Non -wetted Bolts: <br />Grade 8 Zinc Plated <br />Check Disks: <br />Silicone (NSF) <br />Wetted Fasteners: <br />18-8 Stainless Steel <br />Check Springs: <br />17-7 Stainless Steel <br />Check Pins: <br />17-7/18-8 Stainless Steel <br />Check Seats: <br />Noryl° Polymer (NSF) <br />O-rings: <br />Buna-N (NSF) <br />Pressure — Temperature <br />Temperature Range: 33°F —140°F <br />Working Pressure: 10—175psi <br />"The wetted surface of this product contacted by consumable <br />water contains less than 0.25°% of lead by weight. <br />Teflon® Is a registered trademark of The Chem ours Company, <br />Noryl® Is a registered trademark of SABIC Global Technologies B.V <br />Ames Fire & Waterworks product speafications in U.S. customary units and metric are approximate and are provided for reference only. For precise measure- <br />ments, please wntact Ames Fire & Waterworks Technical Service. Ames Fire & Waterworks reserves the right to change or modify product design, wnstructiom <br />specifications or materials without prior notice and without incurring any obligation to make such changes and moddirntions on Ames Fire & Waterworks products <br />prevmu y or subsequently sold. <br />L A <br />FIRE.. ..... cMvv��o <br />A VA TS Brand <br />