Last edited by Shami
Wednesday, July 29, 2020 | History

3 edition of Backflow prevention assemblies approved for installation in Washington State. found in the catalog.

Backflow prevention assemblies approved for installation in Washington State.

Backflow prevention assemblies approved for installation in Washington State.

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Published by Washington State Dept. of Health, Division of Environmental Health, Office of Drinking Water in Olympia, WA .
Written in English

    Subjects:
  • Cross-connections (Plumbing),
  • Water-supply engineering -- Washington (State),
  • Backsiphonage (Plumbing) -- Prevention -- Washington (State)

  • Edition Notes

    ContributionsWashington (State). Office of Environmental Health Programs., Washington (State). Office of Drinking Water.
    The Physical Object
    Pagination51 [i.e., 56] p. :
    Number of Pages56
    ID Numbers
    Open LibraryOL17620312M
    OCLC/WorldCa55646507

    the visual inspection of flow through the assembly. CONSTRUCTION AND INSTALLATION SPECIFICATIONS: A required Reduced Pressure Principle Backflow Prevention Assembly shall, as a minimum conform to the AWWA Standar d C (R83) adopted on Janu for Reduced Pressure Type Backflow Prevention Devices. (CCR, Ti Section (c)). The only way to ensure your backflow prevention assemblies are working properly — and keeping you and your family safe — is to have them tested by a certified backflow assembly tester (BAT). For this reason, the Uniform Plumbing Code (Section ) and the Washington Administrative Code (Section ) require annual testing of.

    Without proper backflow protection, your irrigation system could endanger the health of your family, neighbors, and others in the community who are using the public water system. Improper installation of a state-approved backflow prevention device or failure to meet testing requirements are grounds for termination of water service.   A backflow prevention assembly is used to protect potable water supplies (Drinking Water) from contamination or pollution due to backflow. In water supply systems, water is normally maintained at a significant pressure to enable water to flow from the tap, shower, or other fixture.

    Understanding the backflow prevention terminology is the key to knowing which backflow assembly is appropriate for a given installation. Backflow prevention assemblies are life safety products. If the wrong assembly is specified, the end result can be disastrous. The Health and Liability Risks of Contaminated Drinking Water. The examination will consist of questions relating to safety, regulatory, operation, and trouble shooting of backflow prevention assemblies. Medical Gas. The Washington State medical gas examination is an open book exam based on the NFPA 99C Gas and Vacuum Systems. To order books: You can order the following books by calling


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Backflow prevention assemblies approved for installation in Washington State Download PDF EPUB FB2

Approved Backflow Prevention Assemblies List. Under WACbackflow prevention assemblies that appear on the USC-Approved Assemblies List are acceptable for protection of the public water system. Cross-Connection Control (CCC) Publications and Forms Publications: CCC Rules (PDF, DOH ) - Washington State CCC regulations (WAC (a) The purveyor shall ensure that all backflow prevention assemblies relied upon by the purveyor are models included on the current list of backflow prevention assemblies approved for use in Washington state.

The current approved assemblies list. Additionally, backflow prevention assemblies used in South Carolina must be on SC DHEC's (List of Approved Backflow Prevention Assemblies for South Carolina). Certification The backflow prevention certification workshop is a three-day course that instructs students in how backflow can occur and how cross connections can be addressed and/or.

The backflow prevention assemblies are approved for a period of three years and this approval is subject to renewal. Each approved backflow prevention assembly is listed by the type of assembly, manufacturer’s name, model, size, edition of the manual under which the assembly was approved, approval date, and the latest renewal date.

Approved backflow prevention assembly: The backflow assembly installed must be approved for use in Washington State. The list can be found at USC Foundation (). Any backflow assemblies not currently listed must have been listed at the time of original installation.

This revision of date is only published via the current List of Approved Backflow Preven-tion Assemblies. REGARDING INSTALLATION: Unless otherwise specified by the manufacturer all assemblies are to be installed on cold potable water applications - below oF.

Also, all of the assemblies listed are Approved for the INDICATED ORIENTATION(S) ONLY. All assemblies must be listed on the current State of Washington – Department of Health Approved Backflow Prevention Assemblies List. If not currently listed, they must have been listed at the time of original installation.

We must inspect all assemblies upon installation or replacement and periodically after that. Type of Backflow Prevention Assembly Assembly Manufacturer Model of the Assembly Size of the Assembly (inches) Approved Installation Orientation(s) (see page 6) Approved Water Meters for this Model Assembly (detector assemblies only) Edition of the Manual under which the Assembly was Approved Does it Meet the ≤ % Lead Requirement.

Approved backflow prevention assemblies shall be assemblies approved by the University of Southern California (USC) Foundation for Cross Connection Control and Hydraulic Research.

Assembly approvals listed are individually dated and valid within 3 years of the current date, specific to manufacturers, model numbers, piping sizes, installation. Approved Backflow Assemblies The water purveyor relies on approved backflow prevention assemblies to protect the public water system.

Approved assemblies are manufactured with isolation valves and test cocks to permit field-testing to demonstrate that the assemblies are properly functioning to prevent backflow. In addition to the above. Backflow Prevention Assembly (BPA) installed in WaterOne service area must be on the "List of Approved Backflow Prevention Assemblies," which is published by the Foundation for Cross-Connection Control and Hydraulic Research from the University of Southern California.

(8) "Approved atmospheric vacuum breaker (AVB)" means an AVB of make, model, and size that is approved by the department. AVBs that appear on the current approved backflow prevention assemblies list developed by the University of Southern California Foundation for Cross-Connection Control and Hydraulic Research or that are listed or approved by other nationally recognized testing.

Chapter 4 Backfl ow Prevention Assembly Application, Installation, and Maintenance Means of Preventing Backflow, 42 state, may also adopt additional or more stringent rules and regulations as long as the the water consumer, and the backflow prevention assembly tester.

Each has specific responsibilities and each must carry out. The backflow preventer you choose must be listed on the Washington State Department of Health’s Approved Backflow Prevention Assembly List.

Assemblies not currently listed must have been listed at the time of the original installation. In addition, State regulated water purveyors are also required to monitor backflow prevention devices to meet the California Code of Regulations, Title 17 requirements.

A Certificate of Competence issued by EHS is required to inspect, maintain, or test water backflow prevention assemblies. and installation of backflow-prevention assemblies, devices, and methods commensurate with the degree of hazard at the service connection or at the point of cross connection or both.

If these actions are not taken, water service shall ultimately be eliminated. To reduce the risk private plumbing systems pose to the public water distribution. (c) So that the air gap under the relief valve of a reduced pressure backflow assembly meets the approved air gap requirements in chapter WAC.

(5) The completed backflow preventer inspection and field test report must contain results of backflow prevention assembly inspections and field tests conducted according to the field test. All potential cross-connections must be protected with an approved backflow prevention assembly.

To be approved for use in Pullman, an assembly must be on the “Approved Backflow Prevention Assemblies” list developed by the University of Southern California Foundation for Cross-Connection Control and Hydraulic Research.

The assembly may not be modified or installed in a manner that. A backflow prevention rebuilder certification allows the holder, who must also hold a current plumbing license, to perform the installation, maintenance, testing, repair, replacement or rebuilding of backflow prevention assemblies.

Current ASSE and certification is required for this registration. USC Foundation List of Approved Backflow Prevention Assemblies. Search By: Mfr > Model > Size. backflow prevention assembly testers certification course This course is designed for plumbers and other related mechanical contractors.

The course covers basic backflow hydraulics, cross-connection identification, degree of hazard, operation of backflow prevention assemblies, applications and basic installation requirements of backflow.The protection required for these systems is a Double Check Valve or a Reduced Pressure Backflow Assembly, depending on the level of potential hazard.

The required protection assemblies must be listed on the Washington State Department of Health list of approved devices.E. All backflow prevention assemblies shall be of a type and model approved by the state of Washington Administrative Code and the city.

F. Only assemblies specifically approved by the Washington Administrative Code for vertical installation may be installed vertically. G.