10 CFR § 429.51 - Commercial pre-rinse spray valves.

---
identifier: "/us/cfr/t10/s429.51"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "10 CFR § 429.51 - Commercial pre-rinse spray valves."
title_number: 10
title_name: "Energy"
section_number: "429.51"
section_name: "Commercial pre-rinse spray valves."
chapter_name: "DEPARTMENT OF ENERGY"
subchapter_number: "D"
subchapter_name: "ENERGY CONSERVATION"
part_number: "429"
part_name: "CERTIFICATION, COMPLIANCE, AND ENFORCEMENT FOR CONSUMER PRODUCTS AND COMMERCIAL AND INDUSTRIAL EQUIPMENT"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 6291-6317; 28 U.S.C. 2461 note."
regulatory_source: "76 FR 12451, Mar. 7, 2011, unless otherwise noted."
cfr_part: "429"
---


# 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

x<sub>i</sub> is the i
<sup>th</sup> 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

t<sub>0.95</sub> 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]