1、Individual and Branch Type Air Admittance Valves for Sanitary Drainage Systems 1ASSE Standard 1051 - 2009Performance Requirements forIndividual and Branch Type Air Admittance Valves for Sanitary Drainage Systems American Society of Sanitary EngineeringASSE Standard #1051-2009ASSE Board Approved: May
2、, 2009 ANSI Approved: January, 2010An American National StandardIndividual and Branch Type Air Admittance Valves for Sanitary Drainage Systems iASSE Standard 1051 - 2009American Society of Sanitary EngineeringWestlake, OhioCopyright 2009, 2002, 1996 1990All rights reserved.Neither this standard, nor
3、 any portion thereof, may be reproduced without the written consent of the American Society of Sanitary Engineering.No product may be said to be ASSE approved unless the manufacturer has applied to the ASSE, has had his product tested according to the applicable ASSE standards, and when the product
4、has passed the test, displays the ASSE Seal on the product.Instructions for receiving the authorization to display the ASSE Seal are available from ASSEs International Office. Organizations wishing to adopt or list any ASSE standard should print the ASSE standard number on the cover page first and i
5、n equal or larger type to that of the adopting or listing organization.General Informationii Individual and Branch Type Air Admittance Valves for Sanitary Drainage SystemsASSE Standard 1051 - 2009Individual and Branch Type Air Admittance Valves for Sanitary Drainage Systems iiiASSE Standard 1051 - 2
6、009This 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.ASSE considers product performance standards to be of great value in the development of improved plumbing systems.
7、This standard focuses on devices known as AAVs. These devices are intended as an alterna-tive to vents for individual fixtures and branches in the plumbing drainage system. The working group which developed this standard revision, was set up within the framework of the Product Standards Committee of
8、 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 ASSEs endorsement of a product which conforms to the
9、se requirements.Compliance with this standard does not imply acceptance by any code body.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
10、 Standards Institute (ANSI).Forewordiv Individual and Branch Type Air Admittance Valves for Sanitary Drainage SystemsASSE Standard 1051 - 2009Edward J. LyczkoProduct Standards Committee ChairmanCleveland ClinicCleveland, OhioRand H. AckroydRand Technical Consulting, LLCNewburyport, MassachusettsWill
11、iam Briggs, Jr.MGJ Associates New York, New YorkJudson W. CollinsJULYCO ProfessionalsMannford, OklahomaA. Richard EmmersonGeneral InterestBuffalo Grove, IllinoisRon GeorgeRon George Design they only allow air to enter the system. These devices are designed to be used for individual fixtures or for a
12、 horizontal branch serving multiple fixtures. When these devices are installed in a building, there shall be at least one (1) open vent terminal to relieve positive pressure which extends to the atmosphere outside of the building serving the building drain on which these devices are installed.1.2 Sc
13、ope1.2.1 DescriptionThese devices consist of a one-way valve designed to allow air to enter the plumbing drainage system when a pressure less than atmospheric develops. The device closes and seals by grav-ity under (0) differential pressure (static condition) and under positive pressure. These devic
14、es prevent sewer gases from entering the building. The device consists of a hooded or shielded body which contains a movable sealing assembly which seats and seals air flow when closed and allows air to enter when open.1.2.2 Temperature RangeThese devices shall function at temperatures from -40.0F t
15、o 150.0F (-40.0C to 65.6C).1.2.3 RatingThese devices shall be rated to pass the air rate indicated in Table 1 without exceeding a pres-sure drop greater than 1.0 inch (25.4 mm) of water column.Table 1Drainage Pipe Size Maximum DFUsAirflow RateIPS DN CFM L/sinch mm1 32 1 1 0.471 40 3 1 0.472.0 50 6 2
16、 0.943.0 75 20 4 1.884.0 100 160 8 3.762 Individual and Branch Type Air Admittance Valves for Sanitary Drainage SystemsASSE Standard 1051 - 20091.3 Construction1.3.1 Air Inlet ShieldsAir inlets of the device shall be shielded to prevent inlet fouling. Air inlet shields shall extend down the body of
17、the device, over the sealing membrane, to the lowest portion of the sealing membrane, and shall maintain a minimum of 1/16 inch (1.6 mm) clearance between the inner lower edge of the shield and the lowest surface of the air opening of the sealing membrane.1.3.2 LeakageThe device and joining methods
18、shall not permit air leakage when pressurized up to 30 inches (762.0 mm) water column.1.3.3 InterferenceThe end connection of the device shall be designed so that when installed, the joint shall not interfere with any moving parts of the device or restrict air passageways.1.3.4 Connections1.3.4.1 Th
19、reads for AAVsFor all plastic devices having taper pipe threads for connection to the drainage system, threads shall conform to the requirement of ASTM Specification F 1498. Metallic threads shall conform to the requirements of ASME B1.20.1.1.3.4.2 Hubless ConnectorsHubless connectors shall comply w
20、ith ASTM C-564(3), CSA B602(4), or FM 168(5).1.3.4.3 Dimensions and Tolerances for AAV SocketsSockets on the device shall conform to the applicable material requirements. Devices having sockets for connection made from ABS material shall conform to the requirements of ASTM Specification D 2661, with
21、 the exception of wall thickness. Devices having sockets made from PVC material shall conform to the requirements of ASTM Specification D 2665, with the excep-tion of wall thickness.1.3.4.4 Other ConnectionsWhere types of connections other than connections specified in Sections 1.3.4.1, 1.3.4.2, and
22、 1.3.4.3 are provided with the device, the connection shall meet the applicable material require-ments and the total assembly shall comply with the performance tests in this standard.1.4 Reference StandardsReferences to industry standards shall mean the latest edition.Individual and Branch Type Air
23、Admittance Valves for Sanitary Drainage Systems 3ASSE Standard 1051 - 2009Section II2.0 Test Specimens2.1 Samples SubmittedThree (3) devices of each size and model shall be submitted by the manufacturer. Tests shall be performed in the order listed on one (1) device of each size submitted.2.2 Sample
24、s TestedThe testing agency shall select one (1) of each type or model and size for full test.2.3 DrawingsAssembly drawings, installation drawings and other data which are needed to enable a test-ing agency to determine compliance with this standard shall accompany devices submitted for examination a
25、nd performance testing.2.4 RejectionFailure of one (1) device shall be cause for rejection of that size or model.4 Individual and Branch Type Air Admittance Valves for Sanitary Drainage SystemsASSE Standard 1051 - 2009Section III3.0 Performance Requirements and Compliance TestingWhen a device is des
26、igned to accommodate multiple pipe sizes, the device shall be installed on the largest nominal pipe size for which it is designed.3.1 Pressure Test of Complete Device3.1.1 PurposeThe purpose of this test is to determine if any pressure loss is evident during the pressure test.3.1.2 ProcedureThe devi
27、ce shall be mounted in its normal working (upright) position on a pipe having a length equal to ten (10) times its inside diameter. Installation shall be in accordance with manufacturers required installation instructions. The inlet shall be connected to an air supply capable of creating pressures f
28、rom a 1/4 inch (6.4 mm) water column (WC) up to 30.0 inches (762.0 mm) WC. Additionally, a secondary sealed system shall be constructed using the same pipe length and diameter as used for the device to compensate for changing environmental conditions. A pressure measuring device shall be part of the
29、 test apparatus as shown in Figure 1. For the 1/4 inch (6.4 mm) and inch (19.1 mm) pressure test, the pressure measuring device shall have a minimum precision of 0.01 inch (0.3 mm). For the 30 inch (762.0 mm) WC pressure test, the pressure measuring device shall have a minimum precision of 0.5 inch
30、(12.7 mm). The internal air volume of the control shall be equal to the internal air volume of the test device. The ambient temperature of the testing area shall remain constant within 2.0F ( 1.1C). The device shall be mounted in the test fixture at least two (2) hours prior to performing the test.
31、Slowly apply pressure equal to 1/4 inch (6.4 mm) water column. Close the shut-off valves for five (5) minutes, and then slowly increase the pressure to 3/4 inch (19.0 mm) water column. Close the shut-off valves, hold for five (5) minutes, then increase to 30.0 inches (762.0 mm) water column. Close t
32、he shut-off valves for five (5) minutes.Figure 1Pressure Measuring DevicePressuresourceHIPressureMeasuring DeviceControlDevice on TestLOW HI Individual and Branch Type Air Admittance Valves for Sanitary Drainage Systems 5ASSE Standard 1051 - 20093.1.3 CriteriaAny pressure loss during the five (5) mi
33、nute intervals for pressures of 1/4 inch (6.4 mm) water column and 3/4 inch (19.0 mm) water column in excess of 0.05 inches (1.27 mm) water column shall result in a rejection of the device. Any pressure loss during the five (5) minute interval for a pressure of 30.0 inches (762.0 mm) water column in
34、 excess of 2 inches (63.5 mm) water column shall result in a rejection of the device. 3.1.4 Repeat the test procedures in Section 3.1.2 with the device installed at a 15 orienta-tion from the vertical position. The test criteria in section 3.1.3 shall apply for the acceptability of the device to thi
35、s test variation.3.2 Rating and Opening Pressure Test3.2.1 PurposeThe purpose of this test is to simulate a constant negative pressure condition in a buildings drainage system and to rate the device for capacity to serve as the inlet vent for a drain pipe of a specific size and fixture unit value. T
36、he rating shall establish the maximum fixture unit value for specific drain pipe sizes.3.2.2 Procedure - Pre-conditioningInstallation shall be in accordance with manufacturers required installation instructions in ac-cordance with Figure 3. Activate the pressure source until the pressure reaches +1.
37、0 inch (25.4 mm) water column and maintain this pressure for twenty-four (24) consecutive hours. 3.2.3 ProcedureThe assembly shall have an airflow measuring device to measure the airflow rate in the piping and a pressure measuring device for measuring the pressure change in the piping system. The ai
38、r flow measuring device shall be capable of measuring air flow velocity with an precision of 1 ft/min (304.8 mm/min). The pressure measuring device shall have an precision of 0.01 inch (0.3 mm) WC. The pressure measuring device shall be located 4.0 inches (101.6 mm) below the device. There shall be
39、a minimum length of ten (10) times the pipe diameter straight undisturbed pipe above the air flow meter and a minimum length of five (5) times the pipe diameter straight undisturbed pipe below the air flow meter. The fan shall be capable of creating a vacuum air flow within the capacity range of the
40、 device.Figure 210 times the pipe diameter5 times the pipe diameterAir flow measuring deviceVacuum/Pressure sourceDevice on Test4.0 0.5 inches (101.6 12.7 mm) minimumPressure transducerTop of the adapter on hard pipe6 Individual and Branch Type Air Admittance Valves for Sanitary Drainage SystemsASSE
41、 Standard 1051 - 2009The end of the pipe shall be temporarily capped to prevent airflow. Adjust the amount of vacuum being applied with a variable control to a static vacuum of 0.3 inches (7.6 mm) WC. Turn off the vacuum. Remove the cap from the fixture and install the AAV to be tested; then start t
42、he vacuum at 0 inches (0 mm) uniformly increasing the vacuum over 15 seconds 2 seconds to 0.3 inches (7.6 mm) WC until the device opens. Record the value of the pressure at the instant the device opens. This value shall be designated as the opening pressure. Increase the airflow rate until the press
43、ure reaches -1.0 inch 0.05 inch (-25.4 mm 1.27 mm) WC. Record the air flow rate. This value shall be designated as the determined airflow capacity. The temperature shall be maintained during the test at 73.4F 3.6F (23.0C 2.0C).3.2.4 CriteriaA maximum opening pressure value of more than 0.3 inches (7
44、.6 mm) water column shall result in a rejection of the device.3.2.5 Rating the DeviceTable 1 shall be used to establish the drainage pipe size for the device based on the determined airflow capacity. 3.3 Endurance Test3.3.1 PurposeThis purpose of this test is to test the structural characteristics o
45、f the thermoplastics used in the manufacturing of the device by exposing the device to extreme temperatures and applying a mechanical load as it returns to a controlled temperature. When exposed to air temperature between -40.0F and 150.0F (-40.0C and 65.6C), any material, whose characteristic is es
46、-sential to the continued functioning of the device, shall not be adversely effected.3.3.2 Procedure - High TemperatureDevices shall be placed in an environment where the temperature is maintained at 150.0F 5.0F (65.6C 2.8C) for a period of eight (8) hours. After eight (8) hours, remove the device,
47、and install it without delay on the test assembly in accordance with Figure 3. After the device is installed, im-mediately subject the device to a vacuum of 0 to 2.0 inches (0 to 50.8 mm) water column (in order to open the device) for two hundred fifty thousand (250,000) cycles. A cycle shall be def
48、ined as two (2) seconds open and four (4) seconds closed. During the cycle test, the device shall return to the laboratory controlled temperature of 73.4F 3.6F (23.0C 2.0C). Upon completion of this test, the device shall be retested to Section 3.1, Pressure Test of Complete Devices.Note: When instal
49、ling the device to the test assembly, the installation shall be in accordance with manufacturers required installation instructions for exposure to subfreezing or elevated temperatures shall be followed.Individual and Branch Type Air Admittance Valves for Sanitary Drainage Systems 7ASSE Standard 1051 - 2009Figure 3Device on TestPressureTransducerShut-off Valve10 times the pipe diameter Air Flow3.3.3 CriteriaFailure to meet the criteria for Section 3.1, Pressure Test of Complete Device, after the two hundred fifty thousan
