Already a subscriber? 
MADCAD.com Free Trial
Sign up for a 3 day free trial to explore the MADCAD.com interface, PLUS access the
2009 International Building Code to see how it all works.
If you like to setup a quick demo, let us know at support@madcad.com
or +1 800.798.9296 and we will be happy to schedule a webinar for you.
Security check
Please login to your personal account to use this feature.
Please login to your authorized staff account to use this feature.
Are you sure you want to empty the cart?
AWWA C511-17(R21) Reduced-Pressure Principle Backflow Prevention Assembly, 2017
- Foreword [Go to Page]
- I. Introduction. [Go to Page]
- I.A. Background. The production and preservation of safe potable water are the objectives of greatest priority for public water utilities and other agencies having jurisdiction. When safe water has been produced and put into the public distribution system [Go to Page]
- I.B. History. The Conference of State Sanitary Engineers (CSSE) and the American Water Works Association (AWWA) appointed the Joint Committee on Backflow Preventers and Cross-Connection Control in September 1959 to carry out the recommendations of an earl [Go to Page]
- I.C. Acceptance. In May 1985, the US Environmental Protection Agency (USEPA) entered into a cooperative agreement with a consortium led by NSF International (NSF) to develop voluntary third-party consensus standards and a certification program for direct
- II. Special Issues. [Go to Page]
- II.A. Original Equipment Manufacturer (OEM) Parts. Parts installed during servicing and repair shall be provided by the original equipment manufacturer (OEM) and be identical to those provided in the assembly when originally approved. In particular, resil
- III. Use of This Standard. It is the responsibility of the user of an AWWA standard to determine that the products described in that standard are suitable for use in the particular application being considered. [Go to Page]
- III.A. Purchaser Options and Alternatives. This standard includes certain options and alternatives, summarized in the following list, that the purchaser should designate when purchasing reduced-pressure principle backflow prevention assemblies described i [Go to Page]
- III.B. Modification to Standard Any modification to the provisions, definitions, or terminology in this standard must be provided by the purchaser.
- IV. Major Revisions. Major revisions made to the standard in this revision include the following:
- V. Comments. If you have any comments or questions about this standard, please call AWWA Engineering and Technical Services at 303.794.7711, FAX at 303.795.7603; write to the department at 6666 West Quincy Avenue, Denver, CO 80235-3098; or email at standa
- AWWA Standard
- SECTION 1: GENERAL
- Sec. 1.1 Scope
- Sec. 1.2 Purpose
- Sec. 1.3 Application
- SECTION 2: REFERENCES
- SECTION 3: DEFINITIONS
- SECTION 4: REQUIREMENTS
- Sec. 4.1 Materials
- Sec. 4.2 General Design
- Sec. 4.3 Detailed Design [Go to Page]
- Table 2 Pressure differential relief valve discharge rates [Go to Page]
- Table 3 Thermal test minimum flow rates
- Sec. 4.4 Workmanship
- SECTION 5: VERIFICATION
- Sec. 5.1 Testing and Uniformity
- SECTION 6: DELIVERY*
- Sec. 6.2 Preparation for Shipment
- Sec. 6.3 Affidavit of Compliance [Go to Page]
