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Electronic Code of Federal Regulations

e-CFR data is current as of November 7, 2019

Title 10Chapter IISubchapter DPart 431Subpart O → Subject Group


Title 10: Energy
PART 431—ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT
Subpart O—Commercial Prerinse Spray Valves


Test Procedures

§431.263   Materials incorporated by reference.

(a) DOE incorporates by reference the following standard into part 431. The material listed has been approved for incorporation by reference by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Any subsequent amendment to a standard by the standard-setting organization will not affect the DOE regulations unless and until amended by DOE. Material is incorporated as it exists on the date of the approval and a notice of any change in the material will be published in the Federal Register. All approved material is available for inspection at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call (202) 741-6030, or go to: http://www.archives.gov/federal__register/code__of__federal__regulations/ibr__locations.html. Also, this material is available for inspection at U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Building Technologies Program, 6th Floor, 950 L'Enfant Plaza SW., Washington, DC 20024, (202) 586-2945, or go to: http://www1.eere.energy.gov/buildings/appliance__standards. This standard can be obtained from the source below.

(b) ASTM. American Society for Testing and Materials International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, (610) 832-9585, or got to http://www.astm.org.

(1) ASTM Standard F2324-13, (“ASTM F2324-13”), Standard Test Method for Prerinse Spray Valves, approved June 1, 2013; IBR approved for §431.264.

(2) [Reserved]

[78 FR 62987, Oct. 23, 2013, as amended at 80 FR 81453, Dec. 30, 2015]

§431.264   Uniform test method to measure flow rate and spray force of commercial prerinse spray valves.

(a) Scope. This section provides the test procedure to measure the flow rate and spray force of a commercial prerinse spray valve.

(b) Testing and calculations for a unit with a single spray setting—(1) Flow rate. (i) Test each unit in accordance with the requirements of sections 6.1 through 6.9 (Apparatus) (except 6.4 and 6.7), 9.1 through 9.4 (Preparation of Apparatus), and 10.1 through 10.2.5 (Procedure) of ASTM F2324-13, (incorporated by reference, see §431.263). Precatory language in the ASTM F2324-13 is to be treated as mandatory for the purpose of testing. In section 9.1 of ASTM F2324-13, the second instance of “prerinse spray valve” refers to the spring-style deck-mounted prerinse unit defined in section 6.8. In lieu of using manufacturer installation instructions or packaging, always connect the commercial prerinse spray valve to the flex tubing for testing. Normalize the weight of the water to calculate flow rate using Equation 1, where Wwater is the weight normalized to a 1 minute time period, W1 is the weight of the water in the carboy at the conclusion of the flow rate test, and t1 is the total recorded time of the flow rate test.

eCFR graphic er30de15.004.gif

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(ii) Perform calculations in accordance with section 11.3.1 (Calculation and Report). Record the water temperature ( °F) and dynamic water pressure (psi) once at the start for each run of the test. Record the time (min), the normalized weight of water in the carboy (lb) and the resulting flow rate (gpm) once at the end of each run of the test. Record flow rate measurements of time (min) and weight (lb) at the resolutions of the test instrumentation. Perform three runs on each unit, as specified in section 10.2.5 of ASTM F2324-13, but disregard any references to Annex A1. Then, for each unit, calculate the mean of the three flow rate values determined from each run. Round the final value for flow rate to two decimal places and record that value.

(2) Spray force. Test each unit in accordance with the test requirements specified in sections 6.2 and 6.4 through 6.9 (Apparatus), 9.1 through 9.5.3.2 (Preparation of Apparatus), and 10.3.1 through 10.3.8 (Procedure) of ASTM F2324-13. In section 9.1 of ASTM F2324-13, the second instance of “prerinse spray valve” refers to the spring-style deck-mounted prerinse unit defined in section 6.8. In lieu of using manufacturer installation instructions or packaging, always connect the commercial prerinse spray valve to the flex tubing for testing. Record the water temperature ( °F) and dynamic water pressure (psi) once at the start for each run of the test. In order to calculate the mean spray force value for the unit under test, there are two measurements per run and there are three runs per test. For each run of the test, record a minimum of two spray force measurements and calculate the mean of the measurements over the 15-second time period of stabilized flow during spray force testing. Record the time (min) once at the end of each run of the test. Record spray force measurements at the resolution of the test instrumentation. Conduct three runs on each unit, as specified in section 10.3.8 of ASTM F2324-13, but disregard any references to Annex A1. Ensure the unit has been stabilized separately during each run. Then for each unit, calculate and record the mean of the spray force values determined from each run. Round the final value for spray force to one decimal place.

(c) Testing and calculations for a unit with multiple spray settings. If a unit has multiple user-selectable spray settings, or includes multiple spray faces that can be installed, for each possible spray setting or spray face:

(1) Measure both the flow rate and spray force according to paragraphs (b)(1) and (2) of this section (including calculating the mean flow rate and mean spray force) for each spray setting; and

(2) Record the mean flow rate for each spray setting, rounded to two decimal places. Record the mean spray force for each spray setting, rounded to one decimal place.

[80 FR 81453, Dec. 30, 2015]

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