3002 COLBY AVE CHICAGO TITLE 2025-03-24

ES-757DCDA/757NDCDA Job Name 3002 Colby Ave Contractor Harris PNW Job Location Approval Engineer Contractor's P.O. No. Approval Representative Series 757DCDA, 757NDCDA Double Check Detector Assemblies Sizes: 2'/2" —10" Series 757DCDA, 757NDCDA Double Check Detector Assemblies are used to prevent backflow of non-health hazard pollutants that are objectionable but not toxic, from entering the potable water supply system.The 757DCDA, 757NDCDA may be installed under continuous pressure service and may 757DCDAOSY be subjected to backpressure and backsiphonage. Series 757DCDA, 757NDCDA is used primarily on fire line sprinkler systems when it is necessary to monitor unauthorized use of water. Features ` • Extremely compact design • 70% Lighter than traditional designs • 304 (Schedule 40)stainless steel housing&sleeve • Groove fittings allow integral pipeline adjustment 757DCDABFG • Patented tri-link spring check provides lowest pressure loss • Unmatched ease of serviceability •Available with grooved butterfly valve shutoffs • May be used for horizontal, vertical or N pattern installations • Replaceable check disc rubber Specifications The Double Check Detector Assembly shall consist of two independent tri-link check modules within a single housing, _ sleeve access port,four test cocks and two drip tight shutoff valves. Tri-link checks shall be removable and serviceable, with- out the use of special tools.The housing shall be constructed 757NDCDAOSY of 304 Schedule 40 stainless steel pipe with groove end con- nections.Tri-link checks shall have reversible elastomer discs and in operation shall produce drip tight closure against reverse flow caused by backpressure or backsiphonage. The bypass The information contained herein is not intended to replace the assembly shall consist of a meter, which registers in either gal- full product installation and safety information available or the Ion or cubic measurement, a double check backflow assem- experience of a trained product installer.You are required to bly and required test cocks.Assembly shall be a Watts Series thoroughly read all installation instructions and product safety 757DCDA, 757NDCDA. information before beginning the installation of this product. Watts product specifications in U.S.customary units and metric are approximate and are provided for reference only.For precise measurementsWWAM please contact Watts Technical Service.Watts reserves the right to change or modify product design,construction,specifications,or materials with- out prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.