AWWA C504 2023

$76.92

AWWA C504-23 Rubber-Seated Butterfly Valves

Published By	Publication Date	Number of Pages
AWWA	2023	60

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Category: AWWA

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Description

This standard covers rubber-seated butterfly valves, 3 in. (75 mm) through 72 in. (1,800 mm) in diameter, with various body and end types, for fresh and reclaimed water having a pH range from 6 to 12 and a temperature range from 33 to 125F (0.6 to 52C).

PDF Catalog

PDF Pages	PDF Title
7	Foreword I. Introduction. I.A. Background. Butterfly valves are generally used for pipelines carrying liquids and gases. Manufacturers of butterfly valves developed tight-closing, rubber-seated types for cooling water systems and power stations. Since 1940, most new valves install I.B. History. The need for standardization of butterfly valves was recognized by the American Water Works Association (AWWA) in June 1953.
8	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
10	II. Special Issues. II.A. General. Conditions under which a valve is to be operated must be evaluated carefully by the purchaser. The evaluations must include the determination of the hydraulic characteristics of the system in which the valve will be installed and the operat II.B. Buried Valves Larger Than 48 In. Valves in this standard are provided with flanged ends. In buried applications, the purchaser is advised to consider providing means to accommodate issues such as differential settlement, capability to remove the val
11	II.C. Advisory Information on Product Application. This standard does not describe all possible applications or manufacturing technologies. The purchaser should identify special requirements and required deviations from this standard and include appropria
12	II.D. Permeation. The selection of materials is critical for raw water, potable water, wastewater, and reclaimed water service and distribution piping in locations where there is likelihood the pipe will be exposed to significant concentrations of polluta
13	II.E. Effects of Manual or Power Actuation Stroke Time. When specifying manual, cylinder, and electric actuators in items 13, 14, 15, 16, and 17 of Sec. III.A, consideration should be given to the effects of valve operating speed on the pipeline hydraulic II.F Valve Discs and Piping Design. The discs of butterfly valves, when in the fully open position, protrude into the adjacent upstream and downstream piping or other adjacent devices. This can especially be an issue with wafer-style butterfly valves, whe
14	II.G Bolting Gray Cast Iron Flanges to Steel Flanges. The following recommendations are made for the use of high strength bolting used with either ASME or AWWA steel flanges when bolting to low ductility gray cast iron valve flanges. The ASME B16.1 standa
15	II.H. Chlorine and Chloramine Degradation of Elastomers. The selection of materials is critical for water service and distribution piping in locations where there is a possibility that elastomers will be in contact with chlorine or chloramines. Documented II.I. Finite Element Analysis. Advisory Information on Valve Design. Calculation tools like FEA software can be used as a supplement to the equations, wall thickness tables, and size tables when listed in this standard for stress design. These calculation
16	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. III.A. Purchaser Options and Alternatives. The following information should be provided by the purchaser in the purchase documents:
20	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. The major revisions made to the standard in this edition include the following: V. Comments. If you have any comments or questions about this standard, please contact AWWA Engineering and Technical Services at 303.794.7711; write to the department at 6666 West Quincy Avenue, Denver, CO 80235-3098; or email at [email protected].
21	AWWA Standard SECTION 1: GENERAL Sec. 1.1 Scope
22	Sec. 1.2 Purpose Sec. 1.3 Application SECTION 2: REFERENCES
24	SECTION 3: DEFINITIONS
27	SECTION 4: REQUIREMENTS Sec. 4.1 Materials
29	Sec. 4.2 General Design
43	Sec. 4.3 Workmanship Sec. 4.4 Coatings
44	SECTION 5: VERIFICATION Sec. 5.1 Testing by the Manufacturer
48	Sec. 5.2 Notice of Nonconformance SECTION 6: DELIVERY Sec. 6.1 Marking Requirements Sec. 6.2 Shipping Requirements
49	Sec. 6.3 Affidavit of Compliance
51	Installation, Operation, and Maintenance of Rubber-Seated Butterfly Valves SECTION A.1: GENERAL SECTION A.2: UNLOADING SECTION A.3: STORAGE
52	SECTION A.4: �INSPECTION PRIOR TO INSTALLATION SECTION A.5: INSTALLATION
54	SECTION A.6: FIELD TESTING SECTION A.7: OPERATION
55	SECTION A.8: MAINTENANCE