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ES-709L • � . • � • • � Job Name Contractor Job LocaUon Approval Engineer Contractor's P.O.No. Approval Representative . EXISTING. PROVIDED Ser�es 709 FOR HYDRAUL.IC Double Check Valve Assemblies REFERENCE ONLY Sizes: 2'/2"-10" (65-250mm) Series 709 Double Check Valve Assemblies are tlesigned to prevent the reverse flow of polluted water from entering into the potable water system. ��„� yg This series can be applied,where approved by the local authority having juris- ; � �. � diction,on non-health hazard installations.Series 709 features a modular •�8 check design concept to facilitate easy maintenance.Check with local juris- '�'" ' ' tlictional authority as to installation requirements. � Features • Replaceable bronze seats 709 OSY • Maximum flow at low pressure tlrop • Design simplicity for easy maintenance Ball Valve Test Cock----------- • No special tools required for servicing • Captured spring assemblies for safety • Approved for vertical flow up installation ------------- Bolted Cover Models Check Assembly----- ----------- Module Suffix: NRS—non-rising stem resilient seated gate valves OSY—UL/FM outside stem and yoke resilient seated gate valves S-FDA—FDA epoxy coated strainer -----------Replaceable BB—bronze botly-2'h"—3"(64—76mm) Resilient QT—quarter-turn ball valves Disc QT-FDA—FDA epoxy coated ball valve shutoffs LF—without Shutoff valves Lower Stem Replaceable Seat Guide Specifications A Double Check Valve Assembly shall be installed at referenced cross-connec- ChECk ASSemb�y MOC�U�e tions to prevent the backflow of polluted water into the potable water supply. Series 709 features a modular design concept which facilitates complete The cross-connections shall be determined by local inspection authority for maintenance and assembly by retaining the spring load.Also,the first antl use where a high hazard situation does not exist.Valve shall feature modular second check module are itlentical and can be interchanged. check assemblies with center stem guiding.Each check module shall have a captured spring and be accessible through a bolted cover plate.Seats shall be replaceable without special tools.It shall be a complete assembly including �MPORTANT/NQU/REW/THGOVERN/NGAUTHOR/T/ES tight-closing resilient seated shutoff vaNes,test cocks,and a strainer is rec- FORLOCAL 1NSTALLATIUNREOU/REMENTS ommended.The assembly shall meet the requirements of ASSE No.1015; AWWA C510-92;CSA 664.5 antl UL Classified File No.EX3185.Approved by the Foundation for Cross-Connection Control and Hydraulic Research at the �Q� �y��'� University of Southern California.Assembfy shall be a Watts Regulator Company Series 709. w�S�dX�11SU�$� Et1C�tk�1,IC@S. For more i�rforma#ion,send for�terature ES-WB. �WA7TS� �GU�►TOR Watts product specifications in U.S.customary units and metric are approximate and are provided for reference only. For precise measurements, 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 oblig,�tion to make such changes and modifications on Watts products previously or subsequently sold.