ASSE 1052 - 2004 HOSE CONNECTION BACKFLOW PREVENTERS

ASSE Standard #1052-2$904 ASSE Board Approved: FEBRUARY? 2004 Neither this standard, nor any portion thereof, may be reproduced without the written consent of the American Society of Sanitary Engineering. No product may besaid to beASSE approved unlessthe manufacturer has applied tothe ASSE has had his product tested according to the applicable ASSE Standards, and when the product has passed the test, displays the ASSE Seal on the product, Instructions for receiving the authorization to display the Seal are available from ASSE S ASSE Standard numberon the cover page first and in equal or largertypetothatoftheadopting International office. organizations wishing to adopt or list any ASSE Standard should print the or listing organization. American Society of Sanitary Engineering Westlake, Ohio Copyright o 2004, 1993 All rights reserved. Hose Connection BackB/ow Preipenters ASSE #I052 - 2004 --`,```,,,``,,,,,``,,,,```,,,-`-`,,`,,`,`,,`---Hose Connection Backflow Prevenfers ASSE #-?O52 - 2004 --`,```,,,``,,,,,``,,,,```,,,-`-`,,`,,`,`,,`---This foreword shall not be considered a part of the standard, however, it is offered to provide background information. ASSE standards are developed in the interest of consumer safety. The American Society of Sanitary Engineering for Plumbing and Sanitary Research is dedicated to the preservation of public health and safety through its guiding principle “Prevention Rather Than Curei”. The ASSE‘S Standards Program systematically evaluates new technologies through a formal request, and addresses the development and promulgation of performance standards de- signed to safeguard public health and safety, Standards for the performance of components of systems of plumbing are considered by the health and safety. American Society of Sanitary Engineering for Plumbing and Sanitary Research to be of great value in the development of improved plumbing systems for the increased protection of public To accomplish this, the ASSE, through its Product Standards Committee. encourages manufacturers to develop performance standards and testing procedures for their products. interests in plumbing systems, and are acceptable to this Society. These standards have the consensus of the manufacturers and others who have pertinent Preventing the contamination of potable water in plumbing systems is a major objective ofthe ASSE’S Standards Program. The ASSE addressed the need for backflow protection at hose threaded outlets, where attaching a common garden hose or utility hose may expose users to highly dangerous conditions. Hose threaded protective devices shall only be used on systems where the low-head backpressure does not exceed that generated by an elevated hose equal to or less than I O feet (3.0 m) in height. The ASSE issued Standard I QI I for Hose Bibb Vacuum Breakers, which provides excellent backsiphonage protection, using devices containing a single check valve and an atmospheric vent valve. This standard focuses on devices containing two check valves which are known as Hose Connection Backflow Preventers. Backsiphonage and backpressure protection are achieved by adding the safety factor of a second check valve to the protection already provided by the single check Hose Bibb Vacuum Breaker. The two check device: * e meets the ASSE definition of a backflow prevention device; provides improved protection against the high hazard conditions of backsiphonage and low-head backpressure; and e allows a field test to be pedormed. Hose Connection BackB/ow Preipenters ASSE #I052 - 2004 --`,```,,,``,,,,,``,,,,```,,,-`-`,,`,,`,`,,`---It is essential that regular inspection and maintenance of backflow prevention devices be conducted in order to assure that the devices are continuously in working condition to prevent bac kf l ow. Although many of the material specifications are detailed within Section lV of this Standards, it is the responsibility ofthe manufacturer to comply with the requirements of the Safe Drinking water Act, United States Public Law 93-523. The working group which developed this standard revision, was set up within the framework of the Product Standards Committee of the American Society of Sanitary Engineering. Recognition is made of the time volunteered by members of this working group and of the support of the manufacturers who also participated in the meetings for this standard. This standard does not imply ASSE S endorsement of a product which conforms to these req u i re me n ts I Compliance with this standard does not imply acceptance by any code body. Plumbing codes mandate how and where these devices are installed. However, this standard was promulgated using a specific set of installation requirements and conditions for the purpose of providing reasonable performance requirements and compliance testing. It is recommended that these devices be installed consistent with local codes by qualified and trained professionals. This standard was promulgated in accordance with procedures developed by the American National Standards Institute (ANSI), This edition ofthe standard was approved by the ASSE Board of Directors on month day, year, as an ASSE standard, iv Hose Csnrìeciioon Bslekfisw Preventers ASSE #1032 - 2004 Richard J, PraspaI Producf Standards Commitfee Chairman Prosgal Consulting Services inc. Brunswick, Ohio State of Wisconsin Depafiment of Commerce Madison, Wisconsin Gunnar o. cabsliiins Collins Backflow Speciaíisfs. hc. Paiatine, Minois Jud CoIlins Oklahoma Sfate Health Depadmenf Okiahoma City, Oklahoma ASSE Standards Coordinator Westiake, Ohio ichard ~~~e~~oga General fn ferest Buffaio Grove, Minois Steven H azzard ASSE Sfaff€ngineer Westlake, Ohio Dak ~~~~~~~~ SGS United States Testing Company Tulsa, Oklahoma ichaeI Kabel fnterna fional Association of Plumbing and Mechanical ûfficiak Walnnuf? California ~~lIen~igae Lehr, P.E. Lehr Associates New York, New York United Association of Plumbers and Pigefifteers Washington, D. C. Perry eikie, Jr. Perry W- Meikie Consulting Engineer Antioch, Caiifornia awaI p i gad iiwa Ia Kohler Company Kohlerf Wisconsin L~gan~ ~i~gaic~ internationai Code Council, in@. country Chb Hik, Mnois Jack ViIendre Precision Plumbing Products, inc. Pof$md, Oregon David VislIa Plumbing Manufacturers lnstitufe Scha umberg, Iiiinois Jaseph c. ~a~~ut~~ P.E. ASSE Staff Engineer Westjake, Ohio Hose Connection Backflow Prevenfers v ASSE #I052 - 2004 --`,```,,,``,,,,,``,,,,```,,,-`-`,,`,,`,`,,`---Rand H“ ~~~~~y Rand Engine erin y Mewburyport, Massachusetfs Woodford Manufacturing Co. Co/orado Springs, Coiorado Jay R. Smith Manufacturing Co. Montgomery, Alabama John do^ Conbraco Industries, inc. Itgaffhews. North CsroIina Herb ~~~~~~~r Hoeptner Perfected Products Gilroy, Caiifornia Zurn industries. inc. Erie, Pennsylvania Wikins. Division of Zum Indusfuies Paso Robles, CalÍfamia Trevor Perera CSA infernafional Cjeveiand, Ohio andy ~~~~~~~~ Ames Fluid Control Systems Woodiane , Caiifornia Jim ~e~~n~~~ Wisconsin Depaftinent of Commerce Friendship, Wisconsin vi Hose Conrìection Backflow Preventers ASSE #?O32 - 2004 --`,```,,,``,,,,,``,,,,```,,,-`-`,,`,,`,`,,`---Secfi5n I I.I.I.I.I.II.I.I.I.I.II.I.I.I.I.II.I.I.I.I.II.I.I.I.I.II.I.I.I.I.II.I.I.I.I.II.I.I.I.I.II.I.I.I.~.~~~~.~.~.~.~.~~~~.~.~.~.~~~~.~.~.~.~.~~~~.~.~.~. 1 1.0 General 1.3 Reference Standards 4 Section It I.I.I.I.I.II.I.I.I.I.II.I.I.I.II.I.I.I.I.II.I.I.I.I.II.I.I.I.I.II.I.I.I.I.II.I.I.I.I.II.I.I.I.I.~~~~.~.~.~.~.~~~~.~.~.~.~.~~~~.~.~.~.~~~~.~.~.~.~ 2 2.0 Test Specimens 2 2.1 Samples Submit . 2 2.2 Drawings 2 2.3 RejectlQn 2 Secfi5n III I.I.I.I.I.II.I.I.I.I.II.I.I.I.I.II.I.I.I.I.II.I.I.I.I.II.I.I.I.I.II.I.I.I.I.II.I.I.I.I.II.I.I.I.I.~~~~.~.~.~.~.~~~~.~.~.~.~.~~~~.~.~.~.~~~~.~.~.~. 3 3.0 3.4 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.1 1 3.42 3.13 3.44 Performance Requirements and Compliance Testing Hydrostatic Test of Complete Device Figure 1 3 Water FI 3 Table 1 3 Figure 2 4 Deterioration at Maximum Rated Temperature and Pressure 4 Life Cycle Test 4 Resistance to Bending Figure 3 Tightness of Outlet Check Valve Figure 4 6 Tightness of Inlet Check Valve 6 Leakage from Vent Ports 6 Backflow Through Inlet Check Valve Backflow Through Outlet Check Valve Figure 7 9 . 10 Non-removable Feature 11 Secfi5n IV I.I.I.I.II.I.I.I.I.II.I.I.I.I.II.I.I.I.I.II.I.I.I.I.II.I.I.I.I.II.I.I.I.I.II.I.I.I.I.II.I.I.I.I.~~~~.~.~.~.~.~~~~.~.~.~.~.~~~~.~.~.~.~~~~.~.~. 12 4.0 Detailed Requirements 4.4 Materials 4.2 Instructions for Markings 4.3 li?StalIati5n Ii-tstrUCti5ns . 12 4.4 Repair Instructions 12 Section V . -I 3 5.0 Definitions . 13 Hose Connecfion BaMow Prevenfers ASSE #I052 - 2004 vii --`,```,,,``,,,,,``,,,,```,,,-`-`,,`,,`,`,,`---viíi Hose Csnrìeciíoon f36lekf~sw Preventers ASSE # 1032 - 2004 --`,```,,,``,,,,,``,,,,```,,,-`-`,,`,,`,`,,`---This standard establishes design requirements, basic performance requirements and test procedures for hose connection backfl5~ preventers (herein referred to as the “device“). This device isdesigned to beinstalledonthedischargesideofa hosethreaded outletona potablewater system. This two-check device protects against backflow. due to backsiphonage or loiv-head backpressure, and is field testable to certify protection under the high hazard conditions present at a hose threaded outlet. This device shall only be used on systems where the Io?ni-head backpressure does not exceed that generated by an elevated hose equal to or less than 48 feet (3,O m) in height. These devices shall not be subjected to continuous water pressure. 1.21 Description A hose connection backflow preventer shall consist of two independent checks, force loaded or biased to a closed position, with an atmosphericvent located between thehvo checkvalves, which is force loaded or biased to an open position. and a means for attaching a hose. 1.2.2 size Range The device shall have male hosethreaded outlets sized 112 NPHS, 314 NPHS or 1 NPHS. Hose threadsshall conformtoStandard ANSIIASME BI .20,5. lnletswith hosethreads shall be provided with a non-removable feature. 1 2.3 Pressure Wange The devices shall operate at pressures from O psi (O kPa) to 125.0 psi (861.9 kPaj. 1.2.4 Temperature Range The devices shall operate at temperatures from 33.0 “F (0.6 “C) to 140.0 “F (6O.O “Cj. 1-27 We~air~~~~~t~ Devices shall be repairable. Reference to industry standards shall be the latest edition of these standards. --`,```,,,``,,,,,``,,,,```,,,-`-`,,`,,`,`,,`---Three (3) devices of each size and model shall be submitted by the manufacturer. Tests shall be performed in the order listed on one (i j device of each size submitted. The testing agency shall select one (i j of each size and model for the full test. Assembly drawings and other data which is necessary to enable a testing agency to determine compliance with this standard, togetherwith installation drawings, shall accompany devices when submitted for examination and performance tests under this standard. Failure of one (i j device shall be cause for rejection sf that size and model until the manufacturer has corrected the fault and submitted new devices for testing. 2 Hose Csnrìeciion Bslekfisw Reventers ASSE # 1032 - 2004 --`,```,,,``,,,,,``,,,,```,,,-`-`,,`,,`,`,,`---3.1 .i Purpose The purpose ofthis test is to determine iffhe device withstands a pressure of250.0 psi (1723.8 kPa) ortwo (2) times the manufacturer’s maximum rated working pressure, whichever is greater. 3.1 2 Procedure The device shall be installed in the open position on the fest system as shown in Figure 1 with the inlet wnnected to an ambient water supply and the throttling valve #2 open. The device shall be purged ofair, andthethrottlingvaIve#2 closed. Thedeviceshall be pressuriéedto250 psi (1723.8 kPa) ortwo (2) times the manufacturer’s maximum rated working pressure, whichever is greater, The pressure shall be held for not less than five (5j minutes. Figure 1 Primary Supply Gauge Device on Tes; Valva iil Rirrg inlst outlet Iiezometer 3.1.3 Criteria Any indication of external leakage shall result in the rejection of the device. 3.2.1 Purpose The p~rpose of this test is to determine the pressure losses at various flow rates Table 1 Flow Rate and Pressure Loss inlet Size Minimum Flow Rate Maxim um Ai l owa b Ie Il of 5evice Pressure Loss 3 3.2.2 Procedure The device shall be installed as shown in Figure 2 in a test system equipped with means for accurately measuring the flow rate and pressure loss across the device. After purging the system of air, close the throttling valve #2. The throttling valve #2 shall then be opened slov~~ly until the 25.0 psi (132.4 kPa) pressure differential is reached. Gauge tfl - Differential Gauge lnle? ûu.iet Connections shall be ring piezometers per 3.23 Criteria Failure to meet the flow requirements in Table 1 shall result Ín a rejection ofthe device. 3.3.1 Purpose The purpose ofthis test is to determine if the device continues to function without leakage when exposed to the maximum rated temperature and pressure. 3.3.2 Procedure Install the device per Figure 2. Water at a temperature of 140.0 “F k 5.0 “F ( 60.0 “(9 k 3.0 “(9)