10 CFR 429.51 - Commercial pre-rinse spray valves.

§ 429.51 Commercial pre-rinse spray valves.

(a)Sampling plan for selection of units for testing.

(1) The requirements of § 429.11 apply to commercial prerinse spray valves; and

(2) For each basic model of commercial prerinse spray valve, a sample of sufficient size must be randomly selected and tested to ensure that any represented value of flow rate must be greater than or equal to the higher of:

(i) The mean of the sample, where:

and, x is the sample mean;
n is the number of samples; and
xi is the i th sample; Or,

(ii) The upper 95-percent confidence limit (UCL) of the true mean divided by 1.10, where:

and, x is the sample mean;
s is the sample standard deviation;
n is the number of samples; and
t0.95 is the t statistic for a 95-percent two-tailed confidence interval with n-1 degrees of freedom (from Appendix A of this subpart).

(b)Certification reports.

(1) The requirements of § 429.12 are applicable to commercial prerinse spray valves; and

(2) Pursuant to § 429.12(b)(13), a certification report must include the following public product-specific information: The flow rate, in gallons per minute (gpm), rounded to the nearest 0.01 gpm, and the corresponding spray force, in ounce-force (ozf), rounded to the nearest 0.1 ozf.

[ 76 FR 12451, Mar. 7, 2011; 76 FR 24779, May 2, 2011, as amended at 78 FR 62986, Oct. 23, 2013; 80 FR 81453, Dec. 30, 2015; 81 FR 4801, Jan. 27, 2016]

Title 10 published on 10-May-2017 03:48

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 10 CFR Part 429 after this date.

  • 2017-03-29; vol. 82 # 59 - Wednesday, March 29, 2017
    1. 82 FR 15457 - Energy Conservation Program: Test Procedures for Central Air Conditioners and Heat Pumps; Correction
      GPO FDSys XML | Text
      DEPARTMENT OF ENERGY, Office of Energy Efficiency and Renewable Energy
      Final rule; technical correction.
      Effective: March 29, 2017.
      10 CFR Parts 429 and 430

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