1、ASSE Standard #1022-2017 ASSE Board Approved: June 2017ANSI Approved: June 2017ICS Codes: 13 060 2055 230An American National StandardPerformance Requirements for Backflow Preventer for Beverage Dispensing EquipmentASSE InternationalBackflow Preventer for Beverage Dispensing Equipment iASSE 1022-201
2、7General InformationNeither this standard, nor any portion thereof, may be reproduced without the written consent of ASSE International.No product may be said to be ASSE listed unless the manufacturer has applied to ASSE International, has had its product tested according to the applicable standards
3、, 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 the ASSE International office. Organizations wishing to adopt or list any ASSE International standard should print the ASSE Internatio
4、nal standard number on the cover page first and in equal or larger type to that of the adopting or listing organization.ASSE InternationalMokena, IllinoisCopyright 2017, 2003, 1996All rights reserved.ii Backflow Preventer for Beverage Dispensing EquipmentASSE 1022-2017Backflow Preventer for Beverage
5、 Dispensing Equipment iiiASSE 1022-2017ForewordThis foreword shall not be considered a part of the standard; however, it is offered to provide background information.The need for this standard arose from numerous requests by regulatory authorities, manufacturers of backflow prevention devices, consu
6、mers, and users of beverage dispensing equipment.Concerns have been raised that a dual check valve alone will not show any visible indication of failure. ASSE Standard #1022, Performance Requirements for Backflow Preventer for Beverage Dispensing Equipment, includes two check valves and an atmospher
7、ic vent. If there is failure of the downstream check and the backpressure exceeds the supply pressure, the vent will discharge, giving a visual indication of the check valves failure.Although many of the material specifications are detailed within Section IV of this standard, it is the responsibilit
8、y of the manufacturer and the installer to comply with the relevant jurisdictional requirements.This standard was promulgated in accordance with procedures developed by the American National Standards Institute (ANSI).Compliance with this standard does not imply acceptance by any code group unless t
9、he standard has been adopted by the code.iv Backflow Preventer for Beverage Dispensing EquipmentASSE 1022-2017Edward J. Lyczko, ChairpersonCleveland Clinic Retiree Cleveland, OHWilliam Briggs, Jr.MGJ AssociatesNew York, NYTerry BurgerNSF InternationalYpsilanti, MIWilliam ChapinProfessional Code Cons
10、ulting, LLCCullman, ALMark FishZurn Industries, LLCCary, NCRon GeorgePlumb-Tech Design & Consulting Services, LLCNewport, MIDaniel GleibermanSloan Los Angeles, CAJohn F. Higdon, P.E.Apollo Valves / Conbraco Industries, Inc.Matthews, NCGary HowardIllinois Plumbing Inspector RetireeLaGrange, ILConrad
11、L. Jahrling (non-voting)ASSE InternationalChicago, IL2016 Product Standards Committee Chuck LottPrecision Plumbing ProductsPortland, ORPeter MarzecUnited Association of Plumbers and PipefittersPearl River, NYThomas PitcherelloState of New JerseyBordentown, NJDaniel RademacherPlumbing Code and Design
12、 ConsultingButte, MTShabbir RawalpindiwalaKohler CompanyKohler, WIBilly SmithAmerican Society of Plumbing Engineers (ASPE)Montgomery, ALTsan-Liang Su, PhDStevens Institute of TechnologyHoboken, NJBackflow Preventer for Beverage Dispensing Equipment vASSE 1022-2017Dale Tripp, Chairperson Anderson Bra
13、ss Co.Hartsville, SCJohn Higdon, PEApollo Valves / Conbraco Industries, Inc.Pageland, SCConrad L. Jahrling (non-voting)ASSE InternationalChicago, IL 1022 Working GroupDavid OrtonNSF InternationalAnn Arbor, MIS. Scott ParkhurstSGS North America Inc.Tulsa, OKGeorge ThompsonThe Coca-Cola Co.Atlanta, GA
14、vi Backflow Preventer for Beverage Dispensing EquipmentASSE 1022-2017Table of ContentsSection I . 11.0 General . 11.1 Application 11.2 Scope . 1Table 1 11.3 Reference Standards . 2Section II 32.0 Test Specimens 32.1 Samples Submitted for Test . 32.2 Samples Tested 32.3 Drawings 32.4 Rejection 3Secti
15、on III. 43.0 Performance Requirements and Compliance Testing 43.1 Hydrostatic Pressure 4Figure 1 43.2 Hydrostatic Test of Check Valves . 4Figure 2 53.3 Atmospheric Port Leakage . 53.4 Water Flow Test 6Figure 3 63.5 Deterioration at Extremes of Manufacturers Rated Temperature and Pressure Ranges 63.6
16、 Check Valve Sealing Pressure . 73.7 Endurance and Cycle Testing . 7Figure 4 83.8 Atmospheric Port-Opening Pressure 8Figure 5 93.9 Check Valve Leakage . 9Section IV 104.0 Detailed Requirements . 104.1 Materials and Toxicity . 104.2 Design and Construction 104.3 Markings 114.4 Installation Instructio
17、ns 11Section V . 125.0 Definitions. 12Backflow Preventer for Beverage Dispensing Equipment 1ASSE 1022-2017Performance Requirements for Backflow Preventer for Beverage Dispensing Equipment Section I1.0 General1.1 ApplicationBackflow Preventer for Beverage Dispensing Equipment (herein referred to as “
18、device”) is engineered for installation in carbonated post-mix dispensing systems. This standard covers a backflow prevention device designed to protect the potable water supply serving beverage dispensing equipment. These devices are intended for use under continuous or intermittent pressure condit
19、ions.1.2 Scope1.2.1 DescriptionThese devices shall consist of two independently acting check valves biased to a normally closed position. An atmospheric port shall be located between the check valves and shall be biased to a normally open position. The port shall vent liquids, gases, or both, under
20、backflow conditions.1.2.2 Minimum FlowThe device shall meet the minimum flow capacity as described in Table 1.Table 1Device Type Minimum Flow Rate at a Maximum Pressure Drop of 15.0 psi (103.4 kPa)GPM L/sA 1.00 0.06B 2.00 0.13C 3.00 0.19Type indicates the flow capacity of the device and not the conn
21、ection size of the device.1.2.3 Inlet and Outlet ConnectionsInlet and outlet connections shall include 1/4” (8 DN), 3/8” (10 DN), and 1/2” (15 DN) nominal pipe size. 1.2.4 Pressure RangeThese devices shall function properly over the pressure range of 10.0 psi to 200.0 psi (68.9 kPa to 1379 kPa).1.2.
22、5 Temperature RangeThese devices shall function properly over the temperature range of 40.0 F to 130.0 F (4.4 C to 54.44 C).2 Backflow Preventer for Beverage Dispensing EquipmentASSE 1022-20171.3 Reference StandardsASME B1.20.1-2013, Pipe Threads, General Purpose (Inch) ASME B1.20.3-1976 (R2013), Dr
23、yseal Pipe Threads (Inch) ASTM D2240-15, Standard Test Method for Rubber Property Durometer HardnessCFR Title 21, Section 177, Food and Drugs: Indirect Food Additives: PolymersISA 75.02.01-2008 (IEC 60534-2-3 Mod), Control Valve Capacity Test Procedures NSF Standard 18-2012, Manual Food and Beverage
24、 Dispensing EquipmentNSF Standard 61-2015, Drinking Water System Components Health EffectsASME American Society of Mechanical Engineering, Three Park Avenue, New York, NY 10016, www.asme.orgASTM American Society for Testing Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, www.astm
25、.orgCFR Code of Federal Regulations, Superintendent of Documents, U. S. Government Publishing Office, 732 North Capitol Street, NW, Washington, DC 20401, www.gpo.govISA International Society of Automation, 67 Alexander Drive, Research Triangle Park, NC 27709, www.isa.orgNSF NSF International, 789 No
26、rth Dixboro Road, Ann Arbor, MI 48113, www.nsf.orgBackflow Preventer for Beverage Dispensing Equipment 3ASSE 1022-2017Section II2.0 Test Specimens2.1 Samples Submitted for TestThree (3) devices of each model and type shall be submitted by the manufacturer. 2.2 Samples TestedThe testing agency shall
27、select one (1) of each type and each size for the full test. Tests shall be performed in the order listed on one (1) device of each type and each size submitted.2.3 DrawingsAssembly drawings and other data that is needed to enable a testing agency to determine compliance with this standard, together
28、 with installation drawings, shall accompany devices when submitted for examination and performance tests under this standard.2.4 RejectionFailure of one (1) device shall result in a rejection of that type or size. 4 Backflow Preventer for Beverage Dispensing EquipmentASSE 1022-2017Section III3.0 Pe
29、rformance Requirements and Compliance Testing3.1 Hydrostatic Pressure3.1.1 PurposeThe purpose of this test is to determine the structural integrity of the device at 300.0 psi (2068 kPa) or 1.5 times the manufacturers maximum rated working pressure, whichever is greater.3.1.2 ProcedureInstall the dev
30、ice as shown in Figure 1. With Shut-off Valve #3 closed, and Shut-off Valve #2 open, admit water through Shut-off Valve #1 at 130.0 F 5.0 F (54.44 C 2.8 C) or the manufacturers maximum rated working temperature, whichever is greater, through the inlet of the device and purge the device of all air. R
31、un the water for five (5) minutes to heat the device. Close Shut-off Valve #2 and raise the inlet pressure to 300.0 psi (2068 kPa) or 1.5 times the manufacturers maximum rated working pressure, whichever is greater. Hold the pressure for a period of five (5) minutes. Figure 1Shut-off Valve #1Shut-of
32、f Valve #3Shut-off Valve #2Gauge #1Normal Flow PathGauge #2Device on TestPressurizedWater Supply (Primary)Pressurized Water Supply (BacksiphonageSecondary)3.1.3 CriteriaAny indication of leakage shall result in a rejection of the device.3.2 Hydrostatic Test of Check Valves3.2.1 PurposeThe purpose of
33、 this test is to determine the structural integrity and leak tightness of the checks under a backpressure condition of 300.0 psi (2068 kPa) or 1.5 times the manufacturers maximum rated working pressure, whichever is greater.3.2.2 ProcedureBackflow Preventer for Beverage Dispensing Equipment 5ASSE 10
34、22-20173.2.2.1 Downstream Check ValveInstall the device as shown in Figure 1. With Shut-off Valve #1 open to atmosphere and Shut-off Valve #2 closed, open Shut-off Valve #3 and admit water at ambient temperature and raise the pressure to 300.0 psi (2068 kPa) or 1.5 times the manufacturers maximum ra
35、ted working pressure, whichever is greater. Hold for five (5) minutes. Check for leaks at the atmospheric port.3.2.2.2. Upstream Check ValveInstall the device per Figure 2. With Shut-off Valves #1 and #2 open, purge the air through Shut-off Valve #2 by creating water flow through Shut-off Valve #1 t
36、o Shut-off Valve #2. Close Shut-off Valve #2 once the air is purged. Raise the pressure through Shut-off Valve #1 to 300.0 psi (2068 kPa), or 1.5 times the manufacturers maximum rated working pressure, whichever is greater. Hold for five (5) minutes. Examine the device for leakage out of the inlet o
37、f the device.NOTE: The manufacturer shall be permitted to supply fittings to connect the water supply to the atmospheric port.Figure 2 GaugeShut-off Valve #2InletAtmospheric PortOutletNormal Flow PathShut-off Valve #1Device on Test3.2.3 CriteriaAny indication of leakage shall result in a rejection o
38、f the device.3.3 Atmospheric Port Leakage3.3.1 PurposeThe purpose of this test is to determine that under the specified working conditions there is no leakage or discharge from the atmospheric port.3.3.2 ProcedureThe device shall be installed in accordance with Figure 3 with Shut-off Valves #1 and #
39、2 open. A pressure of 10.0 psi 1.0 psi (68.9 kPa 6.9 kPa) shall be maintained at Gauge #1 for a period of five (5) minutes.3.3.3 Repeat section 3.3.2 with the pressure of 200.0 psi 1.0 psi (1379 kPa 6.9 kPa) at Gauge #1.3.3.4. CriteriaAny leakage from the atmospheric port during the tests shall resu
40、lt in a rejection of the device.6 Backflow Preventer for Beverage Dispensing EquipmentASSE 1022-20173.4 Water Flow Test3.4.1 PurposeThe purpose of this test is to determine if the minimum flow capacity of the device is in compliance with Table 1.3.4.2 ProcedureInstall the device as shown in Figure 3
41、. The test system shall accurately measure the rate of flow through the device and indicate or record pressures. (Pressure gauges shall be located as indicated in ISA Standard 75.02.01.) The supply system shall be capable of supplying a volume of water adequate to meet the rated flow requirements of
42、 the device under test while sustaining a steady inlet pressure of not less than 25% of the manufacturers maximum rated working pressure of the device.Open Shut-off Valves #1 and #2. Fill the system through Shut-off Valve #1 with water and purge it of all air. Close Shut-off Valve #2 until the rated
43、 flow per Table 1 is reached or the allowable pressure drop is attained. Record the flow rate through the device and the pressure drop.Figure 3Shut-off Valve #1Shut-off Valve #2Gauge #1 Gauge #2Device on TestFlow MeterAtmospheric PortNormal Flow Path3.4.3 CriteriaA flow rate through the device lower
44、 than that listed in Table 1 or a pressure drop through the device exceeding the limits listed in Table 1 at any flow rate, up to and including the minimum flow rate of the device, shall result in a rejection of the device.3.5 Deterioration at Extremes of Manufacturers RatedTemperature and Pressure
45、Ranges3.5.1 PurposeThe purpose of this test is to verify that the device continues to meet the performance requirements of this standard after flowing at the manufacturers maximum rated working temperature and pressure.Backflow Preventer for Beverage Dispensing Equipment 7ASSE 1022-20173.5.2 Procedu
46、reWater at 130.0 F 4.0 F (54.44 C 2.3 C) or the manufacturers maximum rated working temperature, whichever is greater, and pressure at 200.0 psi 5.0 psi (1379 34 kPa) or the manufacturers maximum rated working pressure, whichever is greater, shall be circulated through the device at the rated flow s
47、pecified in Table 1 for a total of 80 hours 0.25 hours. On completion of this test, water at 40.0 F 4.0 (4.44 C 2.3C) and pressure at 200.0 psi (1379 kPa) or the manufacturers maximum rated working pressure, whichever is greater, shall be circulated through the device at the rated flow for one (1) h
48、our.Table 13.5.3 CriteriaThe device shall comply with all the remaining sections of this standard.3.6 Check Valve Sealing Pressure3.6.1 PurposeThe purpose of this test is to determine if the check valves are force loaded closed, and that they maintain a differential pressure in the direction of the
49、flow.3.6.2 Procedure3.6.2.1 Upstream Check ValveWith the upstream check valve left in its normal operation configuration and all other check valves held open or removed, install the device in its normal operating position as shown in Figure 1. Replace Gauge #1 with a water column or equivalent gauge. Open Shut-off Valves #1 and #2. Close Shut-off Valve #3. Purge the system of air. Slowly raise the pressure on the supply side to fill the water column until there is flow from the outlet of the device. Close Shut-o
