ANSI American Society of Sanitary Engineering 1019-2011 Performance Requirements for Wall Hydrant with Backflow Protection and Freeze Resistance.pdf

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1、ASSE Standard #1019-2011(R2016)ASSE Board Approved: November 2016 ANSI Approved: January 2017 An American National StandardPerformance Requirements for Wall Hydrant with Backflow Protection and Freeze ResistanceASSE InternationalWall Hydrant with Backflow Protection and Freeze Resistance iASSE 1019-

2、2011(R2016)General InformationNeither this standard, nor any portion thereof, may be reproduced without the written consent of ASSE International.Instructions for receiving authorization to display the ASSE Seal are available from the ASSE International office. Organizations wishing to adopt or list

3、 any ASSE standard should print the ASSE standard number on the cover page first in equal or larger type to that of the adopting or listing organization.ASSE InternationalMokena, IllinoisCopyright 2016, 2011, 2004, 1997, 1995, 1993, 1978, 1976All rights reserved.ii Wall Hydrant with Backflow Protect

4、ion and Freeze ResistanceASSE 1019-2011(R2016)Wall Hydrant with Backflow Protection and Freeze Resistance iiiASSE 1019-2011(R2016)ForewordThis foreword shall not be considered a part of the standard; however, it is offered to provide background information.ASSE product standards are developed in the

5、 interest of consumer safety.ASSE International is dedicated to the preservation of public health and safety through its guiding principle, “Prevention Rather Than Cure.”ASSEs Product Standards Program systematically evaluates new technologies through formal requests and addresses the development an

6、d promulgation of performance standards designed to safeguard public health and safety.Standards for the performance of plumbing system components are considered by ASSE International to be of great value in the development of improved plumbing systems for increased protection of public health and s

7、afety.To accomplish this, ASSE, through its Product Standards Committee, encourages manufacturers to develop performance standards and testing procedures for their products. These standards have the consensus of manufacturers and others who have pertinent interests in plumbing systems and are accept

8、able to this society.ASSE recognized that the common garden or utility hose, when connected to a potable water supply by means of hose threaded outlet, constitutes a potential non-potable cross-connection and that a performance standard for preventive means, the vacuum breaker wall hydrant, was warr

9、anted. ASSE Standard #1019, Wall Hydrants Vacuum Breakers Frost Proof Automatic Draining Types, was developed and issued to fulfill this requirement.Plumbing codes now stipulate that hose connections shall be protected by approved vacuum breakers that conform to the performance requirements of ASSE

10、Standard #1011. Accordingly, hose bibbs, sill cocks, lawn faucets, frost-free wall hydrants and the like must be so equipped. Frost resistant wall hydrants equipped with hose connection vacuum breakers pose a restriction to the post closure drainage, which is essential for frost prevention. Such vac

11、uum breakers must be manually triggered to permit drainage, thereby, in effect, negating the frost proof feature of these hydrants that rely on automatic drainage. Thus, it becomes readily apparent to manufacturers of frost proof hydrants that resolution of this matter would involve the development

12、of hydrants that incorporate vacuum breakers and retain the automatic draining provisions essential to frost resistant design.During the 1988 revision of ASSE Standard #1019, ASSE recognized the need to consider two types of wall hydrants for backflow protection. Specifically, test criteria was deve

13、loped for frost proof and automatic draining type wall hydrants. In 1995, a request was made to revise the standard to include a third type of wall hydrant for backflow protection, which holds pressure versus relieving pressure.The life cycle tests contained in this product performance standard repr

14、esent the average expected life of the product.Although many of the material specifications are detailed within Section IV of this standard, it is the responsibility of the manufacturer to comply with the requirements of the Safe Drinking Water Act, United States Public Law 93-523.iv Wall Hydrant wi

15、th Backflow Protection and Freeze ResistanceASSE 1019-2011(R2016)The 1019 Working Group, which developed this standard revision, was set up within the framework of the Product Standards Committee of ASSE International. Recognition is made of the time volunteered by members of this working group and

16、of the support of the manufacturers who participated in meetings for this standard. The standard does not imply ASSEs endorsement of a product that conforms to these requirements.Compliance with this standard does not imply acceptance by any code body. Plumbing codes mandate how and where these devi

17、ces 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 qualifi

18、ed and trained professionals.This standard was promulgated in accordance with procedures developed by the American National Standards Institute (ANSI).This edition was reaffirmed by the ASSE Board of Directors on November 22, 2016 as an ASSE standard.Wall Hydrant with Backflow Protection and Freeze

19、Resistance vASSE 1019-2011(R2016)Edward J. Lyczko, ChairpersonCleveland Clinic Retiree Cleveland, OHWilliam Briggs, Jr.MGJ AssociatesNew York, NYTerry BurgerNSF InternationalYpsilanti, MIWilliam ChapinProfessional Code Consulting, LLCCullman, ALMark FishZurn Industries, LLCCary, NCRon GeorgePlumb-Te

20、ch Design 1) an air inlet for preventing backsiphonage and 2) a check valve for preventing backpressure backflow. The hose shall be removed to protect against damage to the device from freezing.2 Wall Hydrant with Backflow Protection and Freeze ResistanceASSE 1019-2011(R2016)1.2.2 SizesThe device si

21、ze is specified by the inlet connection and the length of the device.1.2.3 Connections1.2.3.1 OutletThe outlet connection shall be a NH garden hose connection threads complying with ASME B1.20.7. 1.2.3.2 InletInlet connections shall meet the applicable requirements of the plumbing code.1.2.4 Pressur

22、eThe devices shall be designed for a minimum working pressure range of 25.0 psi to 125.0 psi (172.4 kPa to 861.9 kPa).1.2.5 Temperature RangeThe devices shall be designed for flow temperatures of 33.0 F to 140.0 F (0.6 C to 60.0 C).1.2.6 RepairabilityDevices shall be designed and constructed such th

23、at after installation, repair or replacement of the elastomeric parts shall be accomplished using standard tools. Construction shall permit field service without damaging or marring the surface of the device.1.2.7 Atmospheric VentAtmospheric vent(s) (air inlets) shall be of a nonstandard plumbing co

24、nnection.1.3 Reference Standards ASME B1.20.7-1991 (R2008), Hose Coupling Screw Threads (Inch)American Society of Mechanical EngineersThree Park AvenueNew York, NY 10016-5990http:/www.asme.orgWall Hydrant with Backflow Protection and Freeze Resistance 3ASSE 1019-2011(R2016)Section II2.0 Test Specime

25、ns2.1 Samples Submitted for TestThe manufacturer shall submit three (3) devices. Where a manufacturer evaluates a series of devices that are identical, except for the inlet sizes and length, the manufacturer shall furnish three (3) production quality devices having the smallest inlet and longest len

26、gth. For Section 3.12, details of the fouling procedure shall be provided by the manufacturer. It shall be permitted for the manufacturer to supply a wire separate for installation by the laboratory.2.2 Samples TestedThe testing agency shall select one of each type, or model, and inlet/outlet size f

27、or full test. The tests shall be run in the order described in the standard on one (1) device. 2.3 DrawingsAssembly and installation drawings and other data needed to enable a testing agency to determine compliance with this standard shall accompany devices when submitted for examination and perform

28、ance testing under this standard.2.4 RejectionFailure of one (1) device shall result in a rejection of that type or model and size. 4 Wall Hydrant with Backflow Protection and Freeze ResistanceASSE 1019-2011(R2016)Section III3.0 Performance Requirements and Compliance Testing3.1 Hydrostatic Pressure

29、 Tests3.1.1 PurposeThe purpose of this test is to determine if the device withstands a working pressure of 250.0 psi (1723.7 kPa) or two (2) times the manufacturers maximum rated working pressure, whichever is greater.3.1.2 ProcedureInstall the device in the open position on a test system with the i

30、nlet connected to an ambient water supply with shut-off valves on the inlet and the outlet. Purge the device of air and then close the outlet shut-off valve. Pressurize the device to 250.0 psi (1723.7 kPa) or two (2) times the manufacturers maximum rated working pressure, whichever is greater. Hold

31、the pressure for five (5) minutes.3.1.3 CriteriaAny indication of damage which prevents compliance with the remainder of this standard or external leakage shall result in the rejection of the device.3.2 Water Flow Capacity 3.2.1 PurposeThe purpose of this test is to determine the devices flow at a p

32、ressure drop of 25.0 psid (172.4 kPa). 3.2.2 ProcedureInstall the device in the open position in a test system that is equipped with the means for measuring the rate of ambient water flow and pressure loss across the device and with a throttling valve on the outlet of the device. Purge the system of

33、 air and then close the throttling valve. The throttling valve shall then be slowly opened until the 25.0 psi +0.0/-0.5 psi (172.4 kPa +0.0/-3.5 kPa) pressure differential across the device is reached. Flow for one (1) minute. Record the flow.3.2.3 CriteriaFailure to meet a minimum flow of 6.0 GPM (

34、22.7 L/m) at a pressure differential of 25.0 psi (172.4 kPa) shall result in a rejection of the device.3.3 Deterioration at Maximum Rated Temperature and Pressure3.3.1 PurposeThe purpose of this test is to condition the device at the maximum rated temperature and pressure of the device.3.3.2 Procedu

35、reInstall the device in the open position in a test set-up. Circulate water through the device:a) At a flow rate of 6.0 GPM 0.5 GPM (22.7 L/m 1.9 L/m); b) At a temperature of 140.0 F 5.0 F (60.0 C 2.8 C) or the manufacturers maximum rated temperature, whichever is greater; andWall Hydrant with Backf

36、low Protection and Freeze Resistance 5ASSE 1019-2011(R2016)c) At a pressure of 125.0 psi 2.0 psi (861.8 kPa 13.8 kPa) or the manufacturers maximum rated pressure, whichever is greater.Run the test for eight (8) hours per day for a total of ten (10) days, or for eighty (80) continuous hours at the ma

37、nufacturers request. 3.3.3 CriteriaFailure of the device to comply with the remaining sections of this standard shall result in a rejection of the device.3.4 Life Cycle Evaluation3.4.1 PurposeThe purpose of this test is to determine at the end of five thousand (5000) cycles if the device continues t

38、o meet the requirements of this standard.3.4.2 ProcedureDevices with a cold water inlet only shall be installed at a source of water at 60.0F 20.0 F (15.6 C 11.2 C) which shall provide 125.0 psi (861.8 kPa) static pressure at the inlet when the device shut-off valve is closed. The device shall be pr

39、ovided with a flow restrictor at the outlet limiting the flow to 8.0 GPM (30.3 L/m). Measure the torque or force required to close the device.Devices with both a cold water inlet and a hot water inlet shall be installed at a source with hot water at 140.0 F 5.0 F (60.0 C 2.8 C) or the manufacturers

40、maximum rated temperature, whichever is greater, to the hot water inlet and at 60.0 F 20.0 F (15.6 C 11.2 C) water to the cold water inlet. Both the hot and ambient water individually shall provide 125.0 psi (861.8 kPa) static pressure at the inlet when the device shut-off valve is closed. The devic

41、e shall be provided with a flow restrictor at the outlet limiting the flow to 8.0 GPM (30.3 L/m). Measure the torque or force required to close the device.3.4.2.1 Dwell TimeThe dwell time for the device full open and full closed configuration shall range from two to four (2-4) seconds each. The open

42、/close dwell time shall be equal for the five thousand (5000) cycles. Single handle devices with both a hot and cold water inlet shall be cycled closed/full open/closed two thousand five hundred (2500) times for the hot position and two thousand five hundred (2500) times for the cold position. For d

43、evices with adjustable stem packing, if stem leakage is noted during or at the end of the test cycling, an adjustment per the manufacturers recommendation shall be made immediately to stop the leakage. 3.4.2.2 Test EquipmentThe test equipment shall apply a closing torque or force to the device neces

44、sary to produce a seal for the shut-off valve plus ten (10) percent. 3.4.3 CriteriaAny leakage from the stem or atmospheric vent port(s) during the test shall result in a rejection of the device. For devices with an adjustable stem packing, stem leakage corrected by a packing adjustment shall not re

45、sult in rejection, provided that not more than three (3) adjustments to a device are made. More than three (3) adjustments to the stem packing shall result in a rejection of the device. Failure of device to comply with the remaining sections of this standard shall result in a rejection of the device

46、.6 Wall Hydrant with Backflow Protection and Freeze ResistanceASSE 1019-2011(R2016)3.5 Resistance to Bending3.5.1 PurposeThe purpose of this test is to determine if the device continues to function without leakage when subjected to a pull of 100.0 pounds (45.4 kg) on a hose applied perpendicular to

47、the device.3.5.2 ProcedureInstall the device per the manufacturers installation instructions. Attach an o-ring seal and test mandrel to the outlet of the device. Pressurize the device with ambient water to 125.0 psi 2.0 psi (861.8 kPa 13.8 kPa). Apply a force of 100.0 pounds (45.4 kg) to the mandrel

48、 1.0 inch (25.4 mm) from the outlet end of the device per Figure 1. Hold for three (3) minutes.Figure 1 1 INCH(25.4mm)100 LBS (45.4 kg) FORCEPUSH OR PULL1 INCHTHREAD - 11.5 NHper ASME B1.20.7SECURELY FASTEN DEVICETO SUPPORT STRUCTURE(25.4mm)3.5.3 CriteriaAny indication of external leakage shall resu

49、lt in rejection of the device. Any fracture in the sill mounting flange or body of the device shall result in a rejection of the device.3.6 Self-Draining Capabilities3.6.1 PurposeThe purpose of this test is to determine if the device is capable of discharging water in subfreezing climates.3.6.2 ProcedureInstall the device per the manufacturers installation instructions in a cold chamber with a 25.0 psi + 5.0 psi/-0.0 psi (172.4 kPa + 34.5 kPa/-0.0 kPa) water supply per Figure 2. The inlet of the device shall be at ambient roo