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Code of Federal Regulations Title 10. Energy § 10.429.51 Commercial pre-rinse spray valves
Current as of January 02, 2025 | Updated by Findlaw Staff
(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 ith 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.
Cite this article: FindLaw.com - Code of Federal Regulations Title 10. Energy § 10.429.51 Commercial pre-rinse spray valves - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-10-energy/cfr-sect-10-429-51/
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