AWWA C517 16 RA2021:2016 Edition

$76.92

AWWA C517-16(R21) Resilient-Seated Cast-Iron Eccentric Plug Valves

Published By	Publication Date	Number of Pages
AWWA	2016	36

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Description

The purpose of this standard is to provide minimum requirements for resilient-seated cast-iron eccentric plug valves, suitable for water, wastewater, and reclaimed water service, including materials, application, inspection, handling, and shipping.

PDF Catalog

PDF Pages	PDF Title
7	Foreword I. Introduction. I.A. Background. Resilient-seated cast-iron eccentric plug valves were introduced in the 1930s as tight-sealing and wear-resistant valves for handling ﬂuids with solids content. The use of such valves has since grown for potable and wastewater application I.B. History. Resilient-seated cast-iron eccentric plug valves were ﬁrst standardized by the Manufacturers Standardization Society (MSS) in 1991, in standard practice SP-108. The need for standardization of resilient-seated cast-iron eccentric plug valves 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
9	II. Special Issues. II.A. General. Conditions under which a valve is to be operated must be evaluated carefully by the purchaser. Torque requirements for valve operation vary considerably with diﬀerential pressure across the valve, ﬂuid velocity, ﬂuid temperature, and upstre II.B. Advisory Information on Product Application. This standard does not cover all possible applications or manufacturing technologies. The purchaser should identify special requirements and required deviations from this standard and include appropriate
10	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.
13	IV. Major Revisions. Major changes 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
15	AWWA Standard SECTION 1: GENERAL Sec. 1.1 Scope
16	Sec. 1.2 Purpose Sec. 1.3 Application SECTION 2: REFERENCES
17	SECTION 3: DEFINITIONS
18	SECTION 4: REQUIREMENTS Sec. 4.1 Permeation
19	Sec. 4.2 Data to Be Provided by the Manufacturer or Supplier Sec. 4.3 Materials
20	Sec. 4.4 Design
24	Table 2 Prototype actuator test cycles required
25	SECTION 5: VERIFICATION Sec. 5.1 Inspection Sec. 5.2 Testing
26	Table 3 Minimum duration of shell and seat tests Table 4 Valve test cycles required
27	Sec. 5.3 Basis for Rejection SECTION 6: DELIVERY Sec. 6.1 Marking
28	Sec. 6.3 Affidavit of Compliance
29	APPENDIX A Installation, Operation, and Maintenance of Resilient-Seated Cast-Iron Eccentric Plug Valves