PVC SELF-TAPPING SADDLE TEES FOR USE ON PVC PIPE

Transcription

1 American Water Works Association ANSI/AWWA C (First Edition) R AWWA STANDARD FOR PVC SELF-TAPPING SADDLE TEES FOR USE ON PVC PIPE Effective date: Aug. 1, First edition approved by AWWA Board of Directors Feb. 2, Approved by American National Standards Institute May 9, AMERICAN WATER WORKS ASSOCIATION 6666 West Quincy Avenue, Denver, Colorado 80235

2 AWWA Standard This document is an American Water Works Association standard. It is not a specification. AWWA standards describe minimum requirements and do not contain all of the engineering and administrative information normally contained in specifications. The AWWA standards usually contain options that must be evaluated by the user of the standard. Until each optional feature is specified by the user, the product or service is not fully defined. AWWA publication of a standard does not constitute endorsement of any product or product type, nor does AWWA test, certify, or approve any product. The use of AWWA standards is entirely voluntary. AWWA standards are intended to represent a consensus of the water supply industry that the product described will provide satisfactory service. When AWWA revises or withdraws this standard, an official notice of action will be placed on the first page of the classified advertising section of Journal AWWA. The action becomes effective on the first day of the month following the month of Journal AWWA publication of the official notice. American National Standard An American National Standard implies a consensus of those substantially concerned with its scope and provisions. An American National Standard is intended as a guide to aid the manufacturer, the consumer, and the general public. The existence of an American National Standard does not in any respect preclude anyone, whether that person has approved the standard or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standard. American National Standards are subject to periodic review, and users are cautioned to obtain the latest editions. Producers of goods made in conformity with an American National Standard are encouraged to state on their own responsibility in advertising and promotional materials or on tags or labels that the goods are produced in conformity with particular American National Standards. CAUTION NOTICE: The American National Standards Institute (ANSI) approval date on the front cover of this standard indicates completion of the ANSI approval process. This American National Standard may be revised or withdrawn at any time. ANSI procedures require that action be taken to reaffirm, revise, or withdraw this standard no later than five years from the date of publication. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute, 11 W. 42nd St., New York, NY 10036; (212) Copyright 1997 by American Water Works Association Printed in USA ii

3 Committee Personnel The AWWA Standards Subcommittee on PVC Self-Tapping Saddle Tees, which developed this standard, had the following personnel: T.L. Chance A.T. Davies D.L. Eckstein H.R. Fraser W.S. Gentry Eldon Morain, Chair M.B. Harrington Patrick Hopkins J.H. Lee E.L. Melear James Van Houtte The AWWA Standards Committee on PVC Pressure Pipe and Fittings, which reviewed and approved this standard, had the following personnel at the time of approval: Thomas L. Chance, Chair Robert P. Walker, Vice-Chair Consumer Members K.F. Cerotsky, Springfield Utility Board, Springfield, Ore. A.T. Davies, Public Works, Edmonton, Alta. J.L. Diebel, * Council Liaison, Denver Water Department, Denver, Colo. P.L Eckley, Salem Public Works Department, Salem, Ore. B.H. Ellis, FERA, Houston, Texas R.L. Heino, Public Works, Edmonton, Alta. L.A. Kinney Jr., Bureau of Reclamation, Denver, Colo. J.L. May, City of Garland Water Utilities, Garland, Texas Mike Rickman, Dallas Water Utilities, Dallas, Texas L.A. Wettering, Green Bay, Wis. D.R. Young, Florida Cities Water Company, Poinciana, Fla. (USBR) General Interest Members K.M. Bell, Underwriters Laboratories Inc., Northbrook, Ill. J.P. Castronovo, CH2M Hill Inc., Gainesville, Fla. T.L. Chance, Camp, Dresser & McKee Inc., Houston, Texas M.J. Devine, Whitman & Howard Inc., Norwell, Mass. R.J. Holme, Proctor & Redfern Ltd., Don Mills, Ont. J.A. Lee, Dayton & Knight Ltd., North Vancouver, B.C. S.A. McKelvie, P.B.G. & S Inc., Glastonbury, Conn. E.L. Melear, Boyle Engineering Corporation, Orlando, Fla. (UL) (NEWWA) *Liaison, nonvoting Alternate iii

4 E.W. Misichko, * Underwriters Laboratories Inc., Northbrook, Ill. J.R. Paschal, NSF International, Ann Arbor, Mich. J.G. Richard Jr., Consulting Engineer, Baton Rouge, La. J.K. Snyder, Snyder Environmental Engineering Associates, Audubon, Pa. J.H. Wilber, Standards Engineer Liaison, AWWA, Denver, Colo. (UL) (NSF) Producer Members O.J. Barber, Capco Pipe Company Inc., Van Buren, Ark. Marie Boitz, J-M Manufacturing Company Inc., Livingston, N.J. Claude Corcos, * J-M Manufacturing Company Inc., Livingston, N.J. D.L. Eckstein, * Uni-Bell PVC Pipe Association, Dallas, Texas S.B. Gross, Certainteed Corporation, Blue Bell, Pa. D.W. Harrington, Harrington Corporation, Lynchburg, Va. J.F. Houle, Pacific Western Extruded Plastics Company, Eugene, Ore. P.H. Luckett, Multi Fittings USA, Austin, Texas J.H. Miller, JHM Enterprises, Woodbridge, Ont. Veso Sobot, IPEX Inc., Mississauga, Ont. R.P. Walker, Uni-Bell PVC Pipe Association, South Lake, Texas (UNI-BELL) (UNI-BELL) (UNI-BELL) (UNI-BELL) (UNI-BELL) *Alternate Liaison, nonvoting iv

5 Contents All AWWA standards follow the general format indicated subsequently. Some variations from this format may be found in a particular standard. SEC. PAGE SEC. PAGE Foreword I Introduction... vii I.A Background... vii I.B History... vii I.C Acceptance... vii II Special Issues... viii II.A Advisory Information on Application of Standard... viii III Use of This Standard... ix III.A Purchaser Options and Alternatives... ix III.B Modification to Standard... ix IV Major Revisions... ix V Comments... ix Standard 1 General 1.1 Scope Purpose Application References Definitions Requirements 4.1 Permeation Installation Materials Requirements Verification 5.1 Test Methods Inspection Delivery 6.1 Marking Packaging and Shipping Affidavit of Compliance... 9 Figure 1 Self-Tapping Saddle Tee With Cutaway View... Tables vii 1 ANSI/AWWA C900 Pipe Dimensions (CIOD) IPS PVC Pipe Dimensions... 5 v

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7 Foreword This foreword is for information only and is not a part of AWWA C I. Introduction. I.A. Background. For the past 40 years, the water industry has been using polyvinyl chloride (PVC) pressure pipe for water main lines. The method for connecting service taps to the PVC mains has been an adaptation of the methods of tapping metallic mains. The PVC self-tapping saddle tees (saddles) were developed approximately 30 years ago, specifically designed to supply the need for tapping PVC mains in a manner suitable for the PVC materials used. An example of a self-tapping saddle tee is shown in Figure 1. I.B. History. In 1989, AWWA Standards Council approved a project to develop a standard for saddles, thereby initiating development of this first edition of this standard. 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 all direct and indirect drinking water additives. Other members of the original consortium included the American Water Works Association Research Foundation (AWWARF) and the Conference of State Health and Environmental Managers (COSHEM). The American Water Works Association and the Association of State Drinking Water Administrators (ASDWA) joined later. Internal Tapping Mechanism Saddle Top Outlet Service Line Inlet Sealing Gasket Saddle Bottom Water Main Figure 1 Self-tapping saddle tee with cutaway view vii

8 In the United States, authority to regulate products for use in, or in contact with, drinking water rests with individual states. * Local agencies may choose to impose requirements more stringent than those required by the state. To evaluate the health effects of products and drinking water additives from such products, state and local agencies may use various references, including 1. An advisory program formerly administered by USEPA, Office of Drinking Water, discontinued on Apr. 7, Specific policies of the state or local agency. 3. Two standards developed under the direction of NSF, ANSI /NSF 60, Drinking Water Treatment Chemicals Health Effects, and ANSI/NSF 61, Drinking Water System Components Health Effects. 4. Other references, including AWWA standards, Food Chemicals Codex, Water Chemicals Codex, and other standards considered appropriate by the state or local agency. Various certification organizations may be involved in certifying products in accordance with ANSI/NSF 61. Individual states or local agencies have authority to accept or accredit certification organizations within their jurisdiction. Accreditation of certification organizations may vary from jurisdiction to jurisdiction. Appendix A, Toxicology Review and Evaluation Procedures, to ANSI/NSF 61 does not stipulate a maximum allowable level (MAL) of a contaminant for substances not regulated by a USEPA final maximum contaminant level (MCL). The MALs of an unspecified list of unregulated contaminants are based on toxicity testing guidelines (noncarcinogens) and risk characterization methodology (carcinogens). Use of Appendix A procedures may not always be identical, depending on the certifier. AWWA C does not address additives requirements. Thus, users of this standard should consult the appropriate state or local agency having jurisdiction in order to 1. Determine additives requirements including applicable standards. 2. Determine the status of certifications by all parties offering to certify products for contact with, or treatment of, drinking water. 3. Determine current information on product certification. II. Special Issues. II.A. Advisory Information on Application of Standard. This standard pertains to saddles for use with PVC water pipes conforming to outside diameter dimensions of cast iron outside diameter (CIOD) pipe 4 in. through 8 in. (100 mm through 200 mm) as described in AWWA C900 and iron-pipe-size (IPS) outside diameter in. through 8 in. (32 mm through 200 mm) PVC water pipe. NOTE: Even though AWWA Standard C900 covers 4 in. through 8 in. PVC pressure class pipes in CIOD, there is no AWWA standard covering in. through 8 in. IPS pipes that are pressure rated (ASTM D2241) nor schedule thicknesses *Persons in Canada, Mexico, and non-north American countries should contact the appropriate authority having jurisdiction. American National Standards Institute, 11 W. 42nd St., New York, NY NSF International, 3475 Plymouth Rd., Ann Arbor, MI Both publications available from National Academy of Sciences, 2102 Constitution Ave. N.W., Washington, DC viii

9 (ASTM D1785) that are in common use for service lines and branches. Therefore, this standard provides provisions to accommodate the in. through 8 in. IPS pipe. III. Use of This Standard. AWWA has no responsibility for the suitability or compatibility of the provisions of this standard to any intended application by any user. Accordingly, each user of this standard is responsible for determining that the standard s provisions are suitable for and compatible with that user s intended application. III.A. Purchaser Options and Alternatives. The following items should be covered in the purchaser s specifications: 1. Standard used that is, ANSI/AWWA C908, Standard for PVC Self-Tapping Saddle Tees For Use on PVC Pipe, of latest revision. 2. Nominal size and OD base of pipe upon which to install the self-tapping saddle tee (e.g., 6-in. CIOD or 6-in. IPS) (Sec ). 3. Nominal size and type of outlet to be used (e.g., 3 4 in. copper tube size (CTS) compression) (Sec ). 4. If an affidavit of compliance is required (Sec. 6.3). 5. If the purchaser will require plant inspection (Sec ). III.B. Modification to Standard. Any modification of the provisions, definitions, or terminology in this standard must be provided in the purchaser s specifications. IV. Major Revisions. This is the first edition of this standard. V. Comments. If you have any comments or questions about this standard, please call the AWWA Standards and Materials Development Department, (303) ext. 6283, FAX (303) , or write to the department at 6666 W. Quincy Ave., Denver, CO ix

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11 American Water Works Association R ANSI/AWWA C (First Edition) AWWA STANDARD FOR PVC SELF-TAPPING SADDLE TEES FOR USE ON PVC PIPE SECTION 1: GENERAL Sec. 1.1 Sec. 1.2 Sec. 1.3 Scope This standard covers self-tapping saddle tees, hereafter referred to as selftapping saddle(s), molded from polyvinyl chloride (PVC) material (ASTM D1784). The self-tapping saddles are for use with PVC water pipe described in ANSI/AWWA C900, having cast iron outside diameters (CIOD) and are for self-tapping saddles designed for iron pipe size (IPS-OD) PVC water pipes in nominal sizes in. through 8 in. (32 mm through 200 mm). Purpose The purpose of this standard is to provide purchasers, manufacturers, and constructors with minimum capabilities, characteristics, and properties that a saddle must pass at the time of manufacture. Application The saddles covered by this standard are intended for use in tapping 4 in. through 8 in. (100 mm through 200 mm) PVC pipe manufactured in accordance with ANSI/AWWA C900 and for IPS-OD PVC water pipes in nominal sizes in. through 8 in. (32 mm through 200 mm). SECTION 2: REFERENCES This standard references the following documents. In their latest editions, they form a part of this standard to the extent specified within the standard. In any case of conflict, the requirements of this standard shall prevail. 1

12 2 AWWA C ANSI B1.20 American National Standard For Pipe Threads, General Purpose (Inch). ASTM * D1598 Standard Test Method for Time-To-Failure of Plastic Pipe Under Constant Internal Pressure. ASTM D1599 Standard Test Method for Short-Time Hydraulic Failure Pressure of Plastic Pipe, Tubing, and Fittings. ANSI/ASTM D1784 Standard Specification for Rigid Poly (Vinyl Chloride) (PVC) Compounds and Chlorinated Poly (Vinyl Chloride) (CPVC) Compounds. ASTM D1785 Standard Specification for Poly (Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120. ASTM D2122 Standard Test Method for Determining Dimensions of Thermoplastic Pipe and Fittings. ASTM D2241 Standard Specification for Poly (Vinyl Chloride) (PVC) Pressure-Rated Pipe (SDR-Series). ASTM D2837 Standard Test Method for Obtaining Hydrostatic Design Basis for Thermoplastic Pipe Materials. ASTM F477 Standard Specification for Elastomeric Seals (Gaskets) for Joining PVC Pipe. ASTM F610 Standard Test Method for Evaluating the Quality of Molded Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings by the Heat Reversion Technique. ANSI /AWWA C900 Standard for Polyvinyl Chloride (PVC) Pressure Pipe, 4 In. Through 12 In., for Water Distribution. ANSI/AWWA C907 Standard for Polyvinyl Chloride (PVC) Pressure Fittings for Water 4 In. Through 8 In. (100 mm Through 200 mm). AWWA Manual M23 PVC Pipe, Design and Installation. SECTION 3: DEFINITIONS The following definitions shall apply in this standard: 1. Adapter: A fitting used to connect pipe or tubing sections or other fittings that may have different threads or materials. 2. Compression outlet: That portion of a self-tapping saddle(s) used to connect the service pipe to the outlet of the self-tapping saddle(s) by mechanically compressing a seal of elastomeric material. 3. Dimension ratio (DR): The DR is determined by dividing the average outside diameter (OD) of the pipe by its minimum wall thickness and rounding off the dimensionless quotient, when necessary, to the nearest whole number. 4. Factor of safety: A number by which the long-term pressure strength (LTPS) of a self-tapping saddle is divided to determine what proportion of the LTPS can be used in the calculation of its pressure class or pressure rating. 5. Internal tapping mechanism: A device that is a part of the self-tapping tee and used to perforate the wall of the main or shut off the flow of water to the service line. *American Society for Testing and Materials, 100 Barr Harbor Dr., West Conshohocken, PA American National Standards Institute, 11 W. 42nd St., New York, NY

13 PVC SELF-TAPPING SADDLE TEES 3 6. Long-term pressure strength (LTPS): The long-term, hydrostatic, internal pressure strength in pounds per square inch (psi) of a specific configuration and size of injection-molded self-tapping saddle for water service at a specific maximum operating temperature as determined by hydrostatic tests and detailed evaluation procedures in accordance with ASTM D2837, with internal pressure substituted for hoop stress. The LTPS of self-tapping saddles in this standard is 615 psi (4,240 kpa) at 73.4 F (23 C). 7. Manufacturer: The party that manufactures, fabricates, or produces materials or products. 8. Mechanical self-tapping saddle tee: A self-tapping saddle and tee unit used to mechanically connect the water main to a service lateral or pipe incorporating an internal self-tapping mechanism to be used once only on its first application. 9. Polyvinyl chloride: Polyvinyl chloride, or PVC, refers to thermoplastic compounds prepared by combining PVC resin with modifiers, stabilizers, lubricants, and pigments to attain desirable properties for processing, property control, and coloring. 10. Pressure class: The working-pressure rating of a specific pipe or fitting for water service at a maximum operating temperature of 73.4 F (23 C). 11. Pressure rating: The pressure rating of a specific pipe or fitting for water service at a maximum operating temperature of 73.4 F (23 C) determined without an allowance for surge pressure and with a safety factor of Purchaser: The person, company, or organization that purchases any materials or work to be performed. 13. Surge pressure: The maximum pressure increase above the working pressure (sometimes called water hammer ) that is anticipated in the pipe system as a result of change in the velocity of the water column when valves are operated or when pumps are started or stopped. 14. Total system pressure: The sum of working pressure plus surge pressure. 15. Working pressure: The maximum sustained operating pressure under steady state conditions that is anticipated for the pipeline being designed. Transient surge pressures associated with changing flow velocities are not included in working pressure. SECTION 4: REQUIREMENTS Sec. 4.1 Permeation The selection of materials is critical for water service and distribution piping in locations where there is likelihood the pipe will be exposed to significant concentrations of pollutants comprised of low molecular weight petroleum products or organic solvents or their vapors. Research has documented that pipe materials such as polyethylene, polybutylene, polyvinyl chloride, and asbestos cement, and elastomers, such as used in jointing gaskets and packing glands, may be subject to permeation by lower molecular weight organic solvents or petroleum products. If a water pipe must pass through such a contaminated area or an area subject to contamination, consult with the manufacturer regarding permeation of pipe walls, jointing materials, and so forth, before selecting materials for use in that area.

14 4 AWWA C Sec. 4.2 Sec. 4.3 Sec. 4.4 Installation The manufacturer shall make available to the purchaser installation instructions to ensure that self-tapping saddles provide proper performance. Materials Basic materials Self-tapping saddle body components. The plastic components of saddles shall be made from virgin homopolymer compounds capable of satisfying the long-term performance requirements of Sec and the requirements for potable water service (Sec. I.C of the foreword). The compound shall be classified in accordance with ANSI/ASTM D Rework materials. Clean rework materials generated from a manufacturer may be used by that manufacturer for in-house production, provided that the finished products meet all the requirements of this standard Qualification for potable water service. The materials used to make saddles shall contain no ingredient that may migrate into water in quantities considered to be toxic. Materials and compounds shall be suitable for potable water distribution service Gaskets and lubricants. Gaskets and lubricants intended for use with the plastic self-tapping saddle material shall be of materials that are compatible with each other. They shall not be toxic or contribute taste and odor to the water in an assembled piping system Elastomeric gaskets. Elastomeric gaskets shall be manufactured from materials that meet the requirements of ASTM F477 for high head application Self-tapping saddle(s) components. Self-tapping saddle(s) components such as the internal tapping mechanism, fasteners, seals, packing, and so forth, must be made from materials with qualities including endurance, corrosion resistance, and strength so as to not lessen the expected life performance of the assembly. Requirements Workmanship. Self-tapping saddle(s) assemblies shall be free of chips, dirt, filings, or other foreign materials. Those parts that are molded plastic shall be homogeneous throughout and shall be free of visible cracks, holes, foreign inclusions, or other injurious defects. The saddle shall be as uniform as commercially practical in color, opacity, density, and other physical properties Dimensions. The inside diameter of the self-tapping saddle(s) shall conform to the values given in Tables 1 and 2 when measured as specified in ASTM D2122. Upon request, the manufacturer shall furnish to the purchaser relevant standard product dimensions and tolerances for the self-tapping saddle(s). Provisions Table 1 ANSI/AWWA C900 pipe dimensions (CIOD) Nominal Size Pressure Class at 73.4 F (23 C) Average Outside Diameter Tolerance in. (mm) psi DR in. (mm) in. (mm) 4 (100) 100, 150, or , 18, or (121.9) ±.009 (0.23) 6 (150) 100, 150, or , 18, or (175.3) ±.011 (0.28) 8 (200) 100, 150, or , 18, or (229.9) ±.015 (0.38)

15 PVC SELF-TAPPING SADDLE TEES 5 in the design shall include a bottom-out or stop feature to prevent over-tightening and necking-down or damage to the PVC water pipe Fitting qualification test. Each saddle size shall be qualified by testing in accordance with Sec Representative saddles shall demonstrate an average extrapolated long-term pressure strength (LTPS) of 615 psi (4,240 kpa) at 100,000 h Sealing gasket. The sealing gasket in the self-tapping saddle(s) bonnet shall form a permanent watertight seal at the rated pressure of the pipe when the self-tapping saddle is properly installed Internal tapping mechanism. The internal tapping mechanism shall not cause cracking or damage to the water main when cutting the hole in the main in accordance with the manufacturer s instructions. The cutting device shall be a shell cutter suitable for tapping PVC pressure pipe and shall also be designed to minimize stresses on the PVC during the tapping process. The cutter shall retain the PVC coupon cut from the main after tapping Outlets. The outlet of the tee shall be threaded male iron pipe size, threaded female iron pipe size, solvent cemented, or mechanical-compression type, as required by the purchaser. The outlets shall be designed to accept service piping in sizes 1 2 in. (13 mm) through 2 in. (50 mm) IPS OD, or 3 4 in. (20 mm) through 2 in. (50 mm) copper tube size (CTS) Design pressure requirements. The self-tapping saddle(s) shall be designed to provide satisfactory performance on water distribution mains and services operating at 73.4 F (23 C) and 200 psig (1,379 kpa) for all sizes. The ratings apply to the 200 psi (1,379 kpa) working pressure, and the design shall provide for a pressure rise above this pressure caused by surge of 1.5 times above maximum allowable 200 psi (1,379 kpa) pressure in water distribution mains. The long-term pressure strength (LTPS) of each size self-tapping saddle(s) shall be 615 psi (4,240 kpa) Working pressure safety factors. The self-tapping saddle(s) safety factor available at the working pressure of the PVC pipeline on which the saddles are installed can be calculated by using the following equation: F wp = LTPS P wp (Eq 1) Table 2 IPS PVC pipe dimensions Nominal Pipe Size Average Outside Diameter Tolerance in. (mm) in. (mm) in. (mm) (32) (42.16) ±0.005 (0.13) (40) (48.26) ±0.006 (0.15) (50) (60.32) ±0.006 (0.15) (65) (73.02) ±0.007 (0.18) (80) (88.90) ±0.008 (0.20) (90) (101.60) ±0.008 (0.20) (100) (114.30) ±0.009 (0.23) (150) (168.28) ±0.011 (0.28) (200) (219.08) ±0.015 (0.38)

16 6 AWWA C Where: F wp = saddle safety factor at the working pressure LTPS = long-term pressure strength, which is 615 psi (4,240 kpa) for saddles meeting the requirements of this standard P wp = maximum working pressure in the PVC pipeline Example. Calculate the safety factor applicable to an installed and open saddle when conveying flow from a PVC pipeline in which the maximum working pressure will be 200 psi (1,379 kpa). Solution: 615 F wp = = Maximum surge pressure safety factors. Saddles meeting the requirements of this standard are designed to operate at surge pressures of 1.5 pressure rating, or 300 psi (2,068 kpa). The self-tapping saddle(s) safety factors occurring in the PVC pipeline on which they are installed can be calculated by using the following equation: F sp = LTPS P ts (Eq 2) Where: F sp = saddle safety factor at maximum surge pressure LTPS = long-term pressure strength, which is 615 psi (4,240 kpa) for saddles meeting the requirements of this standard P ts = total system pressure in the PVC pipeline, working pressure plus surge pressure, not to exceed 300 psi (2,068 kpa) Example. In a Class 150, DR 18, PVC pipeline, the working pressure is 150 psi. The velocity of flow will be instantaneously changed from time to time by up to 2 ft per second (0.61 m/second). Calculate the safety factor applicable to the self-tapping saddles installed and open on this pipeline under full flow conditions and maximum surge pressure. Solution: The pressure rise in a PVC pipeline as a result of a change in flow velocity is given in AWWA M23. For DR 18 pipe, the pressure surges by 17.4 psi (120 kpa) for each 1 ft/second instant change in flow velocity. Therefore: 615 F = = 3.3 sp Quality control of self-tapping saddle(s) tees Accelerated-regression test. Self-tapping saddle(s) tees shall be tested in accordance with Sec Representative self-tapping saddles shall demonstrate a minimum extrapolated long-term pressure strength (LTPS) of 615 psi (4,240 kpa) at 100,000 h.

17 PVC SELF-TAPPING SADDLE TEES Burst pressure. Specimens of the saddles shall not leak or fail when raised to a pressure of 985 psi (6,791 kpa) in accordance with the test method in Sec Heat-reversion test. Self-tapping saddle tees shall be tested in accordance with Sec The saddles shall conform to the criteria for success specified in the procedure. SECTION 5: VERIFICATION Sec. 5.1 Test Methods Test preparation Conditioning. Tests shall be performed at 73.4 F ±3.5 F (23 C ±2 C) unless otherwise specified by the purchaser. Fittings shall be conditioned at test temperatures in a liquid bath for a minimum of 1 h or in a gaseous medium for a minimum of 16 h before pressurizing Sampling. Selection of fittings for testing shall be as specified in this standard, unless otherwise agreed on by the purchaser and the manufacturer Test methods Dimensions. All measurements shall be made in accordance with ASTM D Fitting qualification test. Each saddle design, pattern, and size shall be qualified by subjecting representative samples to long-term pressure tests, with devices mounted on water mains, as described in ASTM D1598, except as modified below. The PVC pipe will be tapped by the saddle under this qualification test, and the self-tapping saddle(s) valve is closed during the test. Internal pressure is substituted for hoop stress. Pressure versus time-to-failure data, consisting of at least 10 data points and extending to at least 2,000 h, shall be obtained in representative self-tapping saddle specimens mounted on pipe that has end closures described in ASTM D1599, but otherwise in accordance with ASTM D1598. These data shall be used to develop an estimate of the self-tapping saddle s average 100,000 h strength (expressed as internal pressure in psi) in accordance with the extrapolation method given in ASTM D2837. The data shall be entered as log pressure to failure (psi) versus log time to failure hours rather than the usual log stress to failure versus log time to failure. The data shall be considered unsuitable for extrapolation if the lower confidence limit at 100,000 h is less than 85 percent of the estimated average pressure strength for the same time intercept. Failure of pipe only, or of the selftapping saddle(s) only, or of both the pipe and the self-tapping saddle(s) simultaneously in the test assembly shall represent a valid data point for estimating the selftapping saddle s average 100,000 h strength Accelerated-regression test. A minimum of six specimens of a single size of saddles shall be subjected to short-term pressure tests mounted on pipe that has end closures described in ASTM D1599, but otherwise in accordance with ASTM D1598. The self-tapping saddles shall be tested at internal pressures calculated to cause failure (to yield data points) at the following time intervals: a h to h (10 min to 30 min) b h to h (30 min to 120 min) c h to h d h to h

18 8 AWWA C e h to 1,000 h f. 0 to 100+ h (random point) Failure of a self-tapping saddle in a test assembly during the accelerated regression test shall represent a valid data point for estimating the self-tapping saddle s strength. Additional points may be added to improve the precision of the extrapolation or to narrow the band width of the confidence limits. No points shall be excluded unless an obvious defect is detected in the failure area of the test specimen. These data shall be used to develop an estimate of the self-tapping saddle s average 100,000-h strength (expressed as internal pressure in psi) as described in ANSI/ AWWA C907 and in accordance with the extrapolation method given in ASTM D Heat-reversion test. Self-tapping saddles shall be subjected to the reversion test method given in ASTM F610. The estimation of quality shall be based on the suggested interpretation of results given in the appendix of ASTM F Burst-pressure test. All sizes of saddles shall be tested. Self-tapping saddles in sizes 4 in. through 8 in. (100 mm through 200 mm) shall be installed on class 200 DR14 PVC pipe with the tap completed and the valve closed. IPS-OD selftapping saddles in sizes in. through 8 in. (32 mm through 200 mm) shall be installed on DR13.5 series PVC pipe with the tap completed and the valve closed. The pressure in the test assembly shall be raised to the required test pressure within 60 seconds to 70 seconds Test frequency Dimensions. The dimension of self-tapping saddles produced from each mold cavity shall be measured at the beginning of production, and thereafter at least once for each 8 h of production. Any change to the molding parameters or material compound shall be interpreted as a beginning of production Fitting qualification test. Each self-tapping saddle s size shall meet the requirements of Sec Having met these requirements, the qualified fitting may be produced, subject to the other requirements of this standard, without additional qualification tests. A qualified fitting shall be retested in accordance with Sec if a change is made to its designed dimensions or any materials compound to ensure compliance with Sec Accelerated regression test. Testing shall be done on the original design and thereafter, in accordance with Sec Heat-reversion test. One self-tapping saddle shall be selected at random from the first 50 self-tapping saddles of each production run of each configuration and size and tested in accordance with Sec and once each 8 h thereafter or on any change of molding conditions Provision for test-sample failure. Any rejected fitting, plus the fittings represented by that fitting, shall be rejected if it does not meet all requirements in this section. A quantity of specimens shall be subjected to the failed test method in numbers sufficient to determine which are acceptable of those produced from the same mold as the last favorable test Retention of test results. The manufacturer shall maintain for a period of not less than five years a record of all quality-control tests performed in accordance with Sec of this standard and shall, if requested, submit the pertinent record to the purchaser.

19 PVC SELF-TAPPING SADDLE TEES 9 Sec. 5.2 Inspection General. Inspection by the purchaser shall not relieve the manufacturer of the responsibility for furnishing a product that will satisfy the requirements defined in this standard Notification of purchaser. If an in-plant inspection of the product is specified by the purchaser, the manufacturer shall provide the purchaser advance notice of the date, time, and place of self-tapping saddle(s) manufacture and testing so that the purchaser may be present Rejection. Unless otherwise specified by the purchaser, any self-tapping saddle that is found to not conform to this standard shall be returned to and replaced by the manufacturer External leakage. External leakage to the outside of the fitting or any leakage between the self-tapping saddle and pipe is a basis for rejection, when installation is performed in conformance with the manufacturer s published instructions Failure of internal tapping mechanism. Any failure of the internal tapping mechanism to properly cut and retain the coupon without damage to the pipe is a basis for rejection. SECTION 6: DELIVERY Sec. 6.1 Sec. 6.2 Sec. 6.3 Marking Each self-tapping saddle shall bear the following permanent marking: a. Nominal size and OD base of the pipe with which the self-tapping saddle(s) is to be used (i.e., 6 in. C900 OD). b. PVC. c. AWWA designation for this standard (ANSI/AWWA C908-97). d. Manufacturer s name or trademark and production-record code. e. Seal of the laboratory that evaluates the device as being suitable for use with potable water. Packaging and Shipping The saddles shall be complete and ready to install when shipped. The manufacturer shall use care in packaging to prevent damage during handling or transit. Affidavit of Compliance The purchaser may require an affidavit from the manufacturer that the products furnished have been tested and comply with all applicable provisions of this standard.

20 1P-7.5M /97-MG Printed on recycled paper.