1、Performance Requirements for Air Valve and Vent Inflow Preventer ASSE InternationalASSE Standard #1063-2016ASSE Board Approved: September 2016ANSI Approved: August 2016 ICS Code: 23 040 99An American National StandardAir Valve and Vent Inflow Preventer iASSE Standard #1063-2016ASSE InternationalMoke
2、na, IllinoisCopyright 2016, 2008Neither this standard, nor any portion thereof, may be reproduced without the written consent of the ASSE International.No product may be said to be listed by ASSE unless the manufacturer has applied to ASSE International, has had its product tested according to the a
3、pplicable 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 the ASSE International office. Organizations wishing to adopt or list any ASSE standard should print the ASSE stand
4、ard number on the cover page first in equal or larger type to that of the adopting or listing organization. General Informationii Air Valve and Vent Inflow Preventer ASSE Standard #1063-2016Air Valve and Vent Inflow Preventer iiiASSE Standard #1063-2016This foreword shall not be considered a part of
5、 the standard; however, it is offered to provide background information.ASSE International standards are developed in the interest of consumer safety.Water distribution systems are equipped with air valves and air vents at multiple locations to release and admit air into pipelines and reservoirs to
6、allow filling and draining, control surges, and maintain flow efficiency. If the valve or reservoir outlets become flooded or are the target of malicious tampering, the air entry point may be compromised and allow the entry of floodwater, or the intentional introduction of a contaminant to the water
7、 system. The air valve and vent inflow preventer is directly connected to air valve outlets and reservoir vent pipes. This assembly is normally open to allow unrestricted airflow in and out of pipelines and reservoirs during normal conditions. When a flood occurs, a float-operated closure member aut
8、omatically closes to prevent the entry of contaminated fluids. A redundant, float-operated closure member automatically closes if the first one fails. The assembly is mounted in, or near, air valve vaults or reservoir vents. Air valves are sometimes required to relieve a vacuum in a pipeline system
9、to protect the appurtenant equipment. During flooded conditions, the inflow preventer will be closed and will not provide vacuum protection. Similarly, a submerged air valve without an inflow preventer will also not provide vacuum protection. If vacuum protection is required to protect the associate
10、d pipe from collapse, a pipe riser with a screened outlet that extends above the maximum expected flood level should be considered.Recognition is made of the time volunteered by members of this working group and of the support of manufacturers, who also participated in meetings for this standard.Thi
11、s standard does not imply ASSE Internationals endorsement of a product that conforms to these requirements. Compliance with this standard does not imply acceptance by any code body.This standard was promulgated in accordance with procedures developed by the American National Standards Institute (ANS
12、I).Forewordiv Air Valve and Vent Inflow Preventer ASSE Standard #1063-2016Edward J. Lyczko, ChairpersonCleveland Clinic Retiree Cleveland, OHWilliam Briggs Jr.MGJ AssociatesNew York, NYTerry BurgerNSF InternationalYpsilanti, MIWilliam ChapinProfessional Code Consulting, LLCCullman, ALMark FishZurn I
13、ndustries, 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, IL2016 Product Standards CommitteeConrad Jahrli
14、ng (non-voting)ASSE InternationalChicago, ILChuck LottPrecision Plumbing ProductsPortland, ORPeter MarzecUnited Association of Plumbers and PipefittersPearl River, NYThomas PitcherelloState of New JerseyBordentown, NJDaniel RademacherPlumbing Code and Design ConsultingButte, MTShabbir Rawalpindiwala
15、Kohler CompanyKohler, WIBilly SmithAmerican Society of Plumbing Engineers (ASPE)Montgomery, ALTsan-Liang Su, PhDStevens Institute of TechnologyHoboken, NJAir Valve and Vent Inflow Preventer vASSE Standard #1063-2016John Ballun, ChairpersonVal-Matic Valve and Mfg. Corp.Elmhurst, ILDawn FlancherAmeric
16、an Water Works Association (AWWA)Denver, CO1063 Working Group Conrad Jahrling (non-voting)ASSE InternationalChicago, ILKenneth J. KerrKerr MarketingBrunswick, OHvi Air Valve and Vent Inflow Preventer ASSE Standard #1063-2016Table of ContentsSection I . 11.0 General . 11.1 Application 11.2 Scope . 11
17、.3 Limitation on Design . 1Table 1 2Table 2 21.4 Reference Standards . 3Section II . 42.0 Test Specimens 42.1 Samples Submitted 42.2 Samples Tested 42.3 Drawings 42.4 Rejection 4Section III 53.0 Performance Requirements and Compliance Testing 53.1 Hydrostatic Testing of Complete Assembly 5Figure 1 5
18、3.2 Water Tightness Test of Float-Operated Checks 6Figure 2 63.3 Allowable Pressure Loss at Rated Air Flow . 6Figure 3 73.4 Reverse Flow Test 7Figure 4 8Section IV 94.0 Detailed Requirements . 94.1 Materials . 94.2 Documentation . 94.3 Markings . 10Section V 115.0 Definitions 11Appendix 12A1.0 Recom
19、mended Installation Guidelines . 12A1.1 General . 12A1.2 Orientation 12A1.1 Clearances . 12Figure 5 13Air Valve and Vent Inflow Preventer 1ASSE Standard #1063-2016Performance Requirements for Air Valve and Vent Inflow PreventerSection I1.0 General 1.1 ApplicationThe purpose of air valve and vent inf
20、low preventer assemblies (herein after referred to as the “assembly”) is to allow the release and admission of high volumes of air through air valves and air vents in potable water distribution systems, but prevent the entry of contaminated water when the air valve outlet becomes submerged from floo
21、ding or is the target of malicious tampering. 1.2 Scope1.2.1 DescriptionThis assembly shall consist of a primary and secondary chamber. Each chamber shall contain an independent float-operated closure member. The primary chamber is the lower chamber. The secondary or upper chamber is redundant and w
22、ill close in the event that the primary chamber fails to close. Other configurations achieving the performance requirements of this standard are acceptable.1.2.2 Size Range and ConnectionsSizes 1 to 4 NPS (25 to 100 mm) shall be furnished with an NPTF threaded connection. Sizes 6 to 16 NPS (150 to 4
23、00 mm) shall be furnished with a flanged connection.1.2.3 Pressure RangeThe assembly shall be designed and constructed for an operating pressure range of 9.7 psia (66.9 kPaabsolute) to 25.0 psi (172.4 kPa).1.2.4 Temperature RangeThe assembly shall function at temperatures from 32.0 F to 150.0 F (0 C
24、 to 65.6 C).1.3 Limitations on Design1.3.1 Flow DesignFlow ways through the entire assembly passage-way shall be as follows:a) The least cross-sectional area of the air flow ways, including the seat areas, shall not be less than the inside cross-sectional area of the same NPS.b) The manufacturer sha
25、ll furnish a sectional print of the assembly with all of the dimensions needed to enable a verification of the passage-way areas.c) The assembly shall, at a minimum, pass the required volume of air according to Table 1.1.3.2 FunctionThe assembly shall be normally open to allow sustained venting of a
26、ir at the rate given in Table 1, and remain open when the flow is reversed at the same rate. During the flowing conditions, the differential pressure between the inlet piping and atmosphere shall not exceed that given in Table 1.2 Air Valve and Vent Inflow Preventer ASSE Standard #1063-2016Table 1Fl
27、ow Rate and Pressure LossSize of Assembly Rated Flow Maximum Pressure Loss at Rated FlowNPS DN SCFM L/s psi kPa1 25 141 67 5.0 34.52 50 565 267 5.0 34.53 80 1272 600 5.0 34.54 100 2261 1067 5.0 34.56 150 5086 2400 5.0 34.58 200 9042 4267 5.0 34.510 250 14,129 6668 5.0 34.512 300 20,345 9602 5.0 34.5
28、14 350 27,692 13,069 5.0 34.516 400 36,189 17,079 5.0 34.51.3.3 Outlet BasketThe assembly shall be shielded from incoming debris with a screened basket containing inch (6 mm) maximum diameter openings to prevent plugging and sealing of the assembly outlet, and exhibit an open flow area equal to at l
29、east four (4) times the cross-sectional area of the same NPS.1.3.4 LeakageThe assembly shall not permit water leakage past both chambers when pressurized to the lesser of 12.0 inches (304.8 mm) water column above the seats or the height of the assembly. 1.3.5 Connectionsa) Female Pipe Threaded Conne
30、ctionsFemale pipe threaded connections shall conform to the requirements of ASME B1.20.1 and be tapped into a hexagonal boss capable of withstanding, without damage or breakage, the torque given in Table 2.Table 2Size TorqueNPS DN lbfinch Nm1 25 600 682 50 900 1023 80 1200 1364 100 2400 271Air Valve
31、 and Vent Inflow Preventer 3ASSE Standard #1063-2016b) FlangesFlanges shall be flat-faced and drilled to mate with ASME B16.1 for Class 125 cast iron flanges, ASME B16.42 Class 150 ductile iron flanges, and ASME B16.5 Class 150 steel flanges. The flange shall be of sufficient thickness to withstand
32、the rated pressure. 1.3.6 RepairabilityThe internal parts of the assembly shall be accessible for testing, inspection, repairs or replacements. The design shall permit servicing and field testing without removing the assembly from the water distribution system.1.3.7 Test Cock LocationsTest cocks sha
33、ll be provided in the following locations:a) On the top surface of the assembly adjacent to the inlet connection.b) In the top chamber below the top check seat.c) In the lower chamber below the lower check seat.1.3.8 Test Cock SizeThe minimum inlet and outlet NPT thread size of test cocks shall be i
34、n accordance with Table 3.Table 3Size of Assembly Minimum Size of Test CockNPS DN Inch1 to 4 25 to 100 null NPT6 and larger 150 and larger null NPT1.4 Reference StandardsReferences to industry standards shall mean the latest edition. ASME B1.20.1-2013, Pipe Threads, General Purpose, Inch ASME B16.1-
35、2015, Gray Iron Pipe Flanges and Flanged Fittings: Classes 25, 125, and 250 ASME B16.5-2013, Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard ASME B16.42-2011, Ductile Iron Pipe Flanges and Flanged Fittings: Classes 150 and 300 NSF 61-2015, Drinking Water System Compone
36、nts Health Effects NSF 372-2016, Drinking Water System Components Lead Content 4 Air Valve and Vent Inflow Preventer ASSE Standard #1063-2016Section II2.0 Test Specimens2.1 Samples SubmittedThree (3) assemblies of each model and size from 1 NPS through 4 NPS (25 DN through 100 DN) and one (1) assemb
37、ly for sizes 6 NPS (150 DN) and larger shall be submitted by the manufacturer.2.2 Samples TestedThe testing agency shall select one (1) assembly of each model and size for the full test. Tests shall be performed in the order listed on one (1) assembly of each model and size submitted.2.3 DrawingsAss
38、embly and installation drawings, and other data that is needed to enable a testing agency to determine compliance with this standard shall accompany assemblies when submitted for examination and performance tests under this standard.2.4 RejectionFailure of one (1) assembly shall result in a rejectio
39、n of that model and size. Air Valve and Vent Inflow Preventer 5ASSE Standard #1063-2016Section III3.0 Performance Requirements and Compliance Testing3.1 Hydrostatic Testing of Complete Assembly3.1.1 PurposeThe purpose of this test is to determine if the device sustains any damage, permanent deformat
40、ion, or impairment of operation as a result of the hydrostatic test.3.1.2 Procedurea) Seal the exit of the device and invert the assembly in order to allow the checks to fully open when pressurized.b) Connect a water supply at ambient temperature to the inlet (see Figure 1).c) Fill the assembly comp
41、letely with water by bleeding air out of test cock #1.d) Apply a pressure of 50 psi (350 kPa) or two (2) times the manufacturers maximum rated pressure, whichever is greater, for 10 minutes.e) Examine the body and body flanges for leaks or damage.Figure 1 Inverted Assembly for Hydrostatic Test Setup
42、 3.1.3 CriteriaAny leaks through the body or the body flanges, or indications of damage, shall result in rejection of the assembly. 6 Air Valve and Vent Inflow Preventer ASSE Standard #1063-20163.2 Water Tightness Test of Float-Operated Checks3.2.1 PurposeThe purpose of this test is to demonstrate t
43、he float checks ability to provide a water-tight seal at low pressures.3.2.2 Procedurea) Connect the test apparatus with 1.0 inch (25.4 mm) diameter riser tube as shown in Figure 2.b) Block the outlet (bottom) with an expandable plug or blind flange. c) Open test cocks #1 and #2.d) Open the supply v
44、alve to fill the float check assembly and riser tube to 12.0 inches (304.8 mm) above the seat.e) Close the supply valve and allow the water to stabilize in the riser tube for one (1) minute.f) Mark the water height on the tube and observe the water level for five (5) minutes.g) Repeat the test with
45、the supply connected to test cock #2.Figure 2 3.2.3 CriteriaA drop in water column height greater than 0.13 inch (3.2 mm) for either seat test shall result in a rejection of the assembly.3.3 Allowable Pressure Loss at Rated Air Flow3.3.1 PurposeThe purpose of this test is to verify the pressure drop
46、 through the assembly at the air flow capacity given in Table 1 of this standard.3.3.2 Procedurea) Install the assembly as shown in Figure 3. Connect a schedule 40 steel or schedule 40 PVC air supply line equal to the assembly size.i. The test setup shall have an airflow measuring device to measure
47、the flow rate in the piping and a pressure transducer for measuring the pressure change in the piping system.ii. The air flow measuring device shall be capable of measuring the air flow up to the capacity range given in Table 1 for the sizes to be tested with a 5% accuracy.Air Valve and Vent Inflow
48、Preventer 7ASSE Standard #1063-2016iii. The pressure transducer shall be 10.0 psi (68.9 kPa) full scale with a 5% full scale accuracy.iv. The fan or suitable air source shall be capable of delivering the air flow within the capacity range given in Table 1.b) Activate the fan or pressure source until
49、 the flow rate specified in Table 1 is achieved.c) Record the value of the pressure corresponding to the specified flow rate.d) Remove the assembly and repeat steps a) through c) through the test piping at the specified flow rate. Record the value of the pressure loss. Subtract the test piping pressure loss from the assembly pressure loss, and record the net pressure loss.NOTE: Leakage through the test connection or temporary plug during the test is acceptable.Figure 3 3.3.3 CriteriaPressure losses greater than those specified in Table 1 shall resu
