1、Performance Requirements forAnti-Siphon FillValves for WaterCloset TanksAmerican Society of Sanitary EngineeringASSE Standard #1002-2008ASSE Board Approved: APRIL 28, 2008ANSI Approval: DATEAn American National StandardCopyright American Society of Sanitary Engineering Provided by IHS under license
2、with ASSE Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright American Society of Sanitary Engineering Provided by IHS under license with ASSE Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-American Society of Sanitary Engi
3、neeringWestlake, OhioCopyright 2008, 1999, 1986, 1979, 1976Neither this standard, nor any portion thereof, may be reproduced without the written consentof the American Society of Sanitary Engineering.No product may be said to be ASSE approved unless the manufacturer has applied to theASSE, has had h
4、is product tested according to the applicable ASSE Standards, and when theproduct has passed the test, displays the ASSE Seal on the product.Instructions for receiving the authorization to display the Seal are available from ASSEsInternational Office. Organizations wishing to adopt or list any ASSE
5、Standard should print theASSE Standard number on the cover page first and in equal or larger type to that of the adoptingor listing organization.General InformationAnti-Siphon Fill Valves for Water Closet Tanks iASSE Standard #1002- 2008Copyright American Society of Sanitary Engineering Provided by
6、IHS under license with ASSE Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ii Anti-Siphon Fill Valves for Water Closet TanksASSE Standard #1002 - 2008Copyright American Society of Sanitary Engineering Provided by IHS under license with ASSE Not for ResaleNo reprod
7、uction or networking permitted without license from IHS-,-,-This foreword shall not be considered a part of the standard, however, it is offered to providebackground information.ASSE standards are developed in the interest of consumer safety.This standard outlines the performance requirements for An
8、ti-siphon Fill Valves (Ballcocks) forGravity Water Closet Flush Tanks, and describes those performance requirements in terms ofmethods of testing applicable to all such units, equivalent materials or methods of testingintended to demonstrate compliance with these requirements are also acceptable.Rec
9、ognition is made of the time volunteered by members of the working group and of thesupport of the manufacturers who also participated in the meetings for this standard.This standard does not imply ASSEs endorsement of a product which conforms to theserequirements.Compliance with this standard does n
10、ot imply acceptance by any code body.It is recommended that these devices be installed consistent with local codes by qualified andtrained professionals.This standard was promulgated in accordance with procedures developed by the AmericanNational Standards Institute (ANSI).ForewordAnti-Siphon Fill V
11、alves for Water Closet Tanks iiiASSE Standard #1002 - 2008Copyright American Society of Sanitary Engineering Provided by IHS under license with ASSE Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Edward LyczkoProduct Standards Committee ChairmanCleveland ClinicCle
12、veland, OhioRand H. AckroydRand EngineeringNewburyport, MassachusettsGunnar O. CollinsCollins Backflow Specialists, Inc.Palatine, IllinoisJudson W. CollinsJULYCO ProfessionalsMannford, OklahomaShannon M. CorcoranASSE Standards CoordinatorWestlake, OhioA. Richard EmmersonGeneral InterestBuffalo Grove
13、, IllinoisRon GeorgeRon George Design and to ensure that the manufacturer has provided a means for securing the refill tubeto the overflow tube and that it remains in place during the test.3.1.2 ProcedureThe device shall be installed in a water closet tank or container per the manufacturers instruct
14、ions.The water shall be permitted to be displaced in the water closet tank or container. The water supplytemperature for this test shall be maintained at 120.0 F 5.0 F (48.9 C 2.8 C), with a staticpressure of 125.0 psi (861.9 kPa).Flush the water closet tank every five (5) minutes for a total of fif
15、ty (50) cycles using a flush volumetolerance of 1.4 to 2.0 gallons (5.3 to 7.6 liters).Following this test, and with the water closet tank filled with water maintained at 120.0 F 5.0 F(48.9 C 2.8 C), the pressure in the device shall be raised to 150.0 psig (1034.3 kPa) andmaintained for five (5) min
16、utes. The device shall be checked for leakage, distortion, or otherindications of damage which would affect the devices performance.3.1.3 CriteriaAny indications of leakage, distortion, or other damage which affects the devices performanceshall result in a rejection of the device. Failure of the ref
17、ill tube to remain in place throughout thistest shall result in a rejection of the device.3.2 Cycle Test3.2.1 PurposeThe purpose of this test is to demonstrate the devices long-term operational performance.3.2.2 ProcedureInstall the device per the manufacturers instructions in a water closet tank or
18、 container. The deviceshall be operated a total of seventy-five thousand (75,000) cycles at a minimum of 90.0 psi (620.6kPa) static pressure and 70.0 psig (482.7 kPa) minimum flowing pressure using ambienttemperature 65.0 F - 80.0 F (18.3 C to 26.7 C) water. For each cycle, the tank shall be filleda
19、nd the cycle shall have a maximum cycle time of one (1) minute. The water shall be permittedto be displaced in the tank to accelerate this test. Following this test, maintain a static pressureof 125.0 psig ( 861.9 kPa) for five (5) minutes, and observe for leakage, distortion, or otherindications of
20、 damage which would affect the devices performance.3.2.3 CriteriaAny indications of leakage, distortion, or other damage which affects the devices performanceshall result in a rejection of the device. Failure of the refill tube to remain in place throughout thistest shall result in a rejection of th
21、e device.4 Anti-Siphon Fill Valves for Water Closet TanksASSE Standard #1002 - 2008Copyright American Society of Sanitary Engineering Provided by IHS under license with ASSE Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.3 Critical Level Marking and Backflow Pre
22、vention Test3.3.1 PurposeThe purpose of this test is to verify the Critical Level (CL) marking, and ensure that the backflowprevention feature functions as intended.3.3.2 ProcedureInstall the device in accordance with Figure 2. Foul all of the check valves, seats and checkingmembers with a 0.032 inc
23、hes (0.8 mm) diameter wire. The fouling wire shall be placed at a singlepoint on each seating area.Figure 2Anti-Siphon Fill Valve Test AssemblyA sight glass shall be assembled to the shank assembly as shown in Figure 2. Start with the tankwater level 0.125 inches (3.2 mm) below the vacuum breaker ai
24、r port(s) or water dischargeopenings (air gaps type). As the water level is lowered, the device shall be subjected to aninstantaneous vacuum of 25 inches of mercury (84.7 kPa) until there is no water in the sight glass.Next, apply an intermittent vacuum of 5 inches of mercury (16.9 kPa) for five (5)
25、 seconds on andfive (5) seconds off until there is no water in the sight glass. Repeat the intermittent vacuum testAnti-Siphon Fill Valves for Water Closet Tanks 5ASSE Standard #1002 - 2008Antisiphon Fill ValveBowl Refill TubeColoredWaterTest Tank Lock NutSight Glass Pressure Gauge Quick Opening Val
26、ve Slow Opening Valve To Vacuum TankWaterCollectingDrainAABB Tank Fill TubeCopyright American Society of Sanitary Engineering Provided by IHS under license with ASSE Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-at 10, 15, 20, and 25 inches of mercury (33.9 kPa,
27、50.8 kPa, 67.8 kPa, and 84.7 kPa) until thereis no water in the sight glass. This determines line “BB”, the elevation at which back-siphonageceases as the test tank water level is lowered.To determine line “AA”, the elevation at which back-siphonage begins as the level is raised, setthe water level
28、one (1) inch (25.4 mm) below line “BB”. The device shall be subjected to aninstantaneous vacuum of 25 inches of mercury (84.7 kPa). Increase the water level by incrementsof 0.125 inch (3.2 mm) until water appears in the sight glass. At each 0.125 inch (3.2 mm)increment, apply an intermittent vacuum
29、of 5 inches of mercury (16.9 kPa) for five (5) seconds onand five (5) seconds off until water appears in the sight glass. Repeat the intermittent vacuum testat 10, 15, 20, and 25 inches of mercury (33.9 kPa, 50.8 kPa, 67.8 kPa, and 84.7 kPa) until waterappears in the sight glass.While lines “AA” and
30、 “BB” may coincide, the lower of the two (2) lines shall be determined to bethe Critical Level (CL) of the device.3.3.3 Criteriaa) If the Critical Level (CL) mark on the device is at or below the Critical Level (CL) determinedin Section 3.3.2, proceed to Section 3.5.b) If water fails to appear in th
31、e sight glass, the device shall be tested to Section 3.3.4.c) If the Critical Level (CL) mark on the device is above the Critical Level (CL) determined inSection 3.3.2, this shall result in a rejection of the device.3.3.4 Procedure to Determine if There are Hidden ChecksInstall the device in accorda
32、nce with Figure 2. Hold all of the check valves, seats and checkingmembers fully open. Seal off the air inlet ports. A sight glass shall be assembled to the shankassembly as shown in Figure 2. Submerge the device completely under the water in the watercloset tank, and subject the device to a vacuum
33、of 25 inches of mercury (84.7 kPa). Check for waterin the sight glass.Failure of water to appear in the sight glass shall indicate the presence of a hidden check valve.Repeat the procedure in Section 3.3.4 with the check valve(s) fully open until water appears in thesight glass. Retest to Section 3.
34、3.2.3.4 Total Flow Test - Retrofit Devices Only3.4.1 PurposeThe purpose of this test is to verify that the retrofit device meets minimum flow rates.3.4.2 ProcedureThe device shall be set to run fully open with a flowing pressure of 15.0 psi (103.4 kPa) measuredat the inlet to the device. Measure the
35、 flow rate for a minimum of one (1) minute.3.4.3 CriteriaFailure of the device to flow a minimum of 1.5 GPM (5.7 L/min) at 15.0 psi (103.4 kPa) flowingpressure shall result in a rejection of the device.3.5 Refill Capacity Test - Retrofit Devices Only3.5.1 PurposeThe purpose of the test is to verify
36、that the device meets minimum refill requirements.6 Anti-Siphon Fill Valves for Water Closet TanksASSE Standard #1002 - 2008Copyright American Society of Sanitary Engineering Provided by IHS under license with ASSE Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.
37、5.2 ProcedureThe device shall be set to run fully open with a flowing pressure of 15.0 psi (103.4 kPa) measuredat the inlet of the device. The refill flow rate shall be measured for a minimum of one (1) minute.3.5.3 CriteriaFailure of the device to flow a minimum of 20% of the flow rate measured in
38、Section 3.4.2 throughthe refill tube at 15.0 psi (103.4 kPa) flowing pressure shall result in a rejection of the device.Anti-Siphon Fill Valves for Water Closet Tanks 7ASSE Standard #1002 - 2008Copyright American Society of Sanitary Engineering Provided by IHS under license with ASSE Not for ResaleN
39、o reproduction or networking permitted without license from IHS-,-,-Section IV4.0 Detailed Requirements4.1 MaterialsSolder and fluxes containing lead in excess of 0.2% shall not be used in contact with potable water.Metal alloys in contact with potable water shall not exceed 8% lead.4.2 Identificati
40、on and MarkingsEach device shall be permanently marked with the following information in such a manner that thedevice can be readily identified after installation.a) Manufacturers name or trademark;b) Model name or number, or part number;c) Critical Level marking for device with air inlet ports.4.3
41、Installation InstructionsWhen devices are furnished to retrofit water closets, installation instructions shall be provided withthe final packaged product.8 Anti-Siphon Fill Valves for Water Closet TanksASSE Standard #1002 - 2008Copyright American Society of Sanitary Engineering Provided by IHS under
42、 license with ASSE Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-1. Excerpt from the ASME A112.18.1/CSA B125.1).Fill Valve ShanksNominalShank SizeExternal ThreadDesignationMajor Diameter of ThreadMinimum Maximum MinimumPitch Diameter of ThreadMaximum15/16 inch(23
43、.81 mm)15/16-14UNS-1A0.9359 inch(23.77 mm)0.9204 inch(23.37 mm)0.8895 inch(22.50 mm)0.8816 inch(22.39 mm)Fill Valve Locknuts and Coupling NutsNominalSizeInternal ThreadDesignationMinor Diameter of ThreadMinimum Maximum MinimumPitch Diameter of ThreadMaximum15/16 inch(23.81 mm)15/16-14UNS-1B0.8681 in
44、ch(22.05 mm)0.8602 inch(21.85 mm)0.9014inch(22.90 mm)0.8911 inch(22.63 mm)Section V5.0 DefinitionsDefinitions not found in this Section are located in the Plumbing Dictionary, Sixth Edition, publishedby the ASSE.Anti-Siphon Fill ValveAnti-siphon fill valves are cold water supply valves that are inst
45、alled within water closet tanks toprovide tank refill and a trap reseal after flushing a water closet. They are equipped with backflowprevention devices or an air gap.Critical LevelThe lowest water level in a fitting at which backsiphonage will not occur1.Appendix AThis Appendix shall not be conside
46、red a part of the standard. It is provided for informationalpurposes only.Thread Dimensions (For Reference Only)The information in this appendix is the result of a series of calculations which are specified inreference standard ASME/ANSI B1.1.Anti-Siphon Fill Valves for Water Closet Tanks 9ASSE Stan
47、dard #1002 - 2008Copyright American Society of Sanitary Engineering Provided by IHS under license with ASSE Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-American Society of Sanitary EngineeringFOR PLUMBING AND SANITARY RESEARCH901 Canterbury Road, Suite A Westla
48、ke, Ohio 44145-1480 USATEL: (440) 835-3040 FAX: (440) 835-3488E-mail: general.infoasse-plumbing.org Web: http:/www.asse-plumbing.orgCopyright American Society of Sanitary Engineering Provided by IHS under license with ASSE Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-
