PMG LISTING CRITERIA FOR STRUCTURAL ADHESIVE JOINING SYSTEMS FOR FITTINGS PREFACE

Transcription

1 (800) (562) A Subsidiary of the International Code Council PMG LISTING CRITERIA FOR STRUCTURAL ADHESIVE JOINING SYSTEMS FOR FITTINGS Approved March 2009 (Editorially Revised ) PREFACE Plumbing, mechanical and fuel gas (PMG) listings issued by ICC Evaluation Service, Inc. (ICC-ES), are based upon performance features of the International Plumbing Code, International Mechanical Code, International Residential Code, Uniform Plumbing Code and Uniform Mechanical Code. Section of the International Plumbing Code reads as follows: Alternative materials, methods and equipment. The provisions of this code are not intended to prevent the installation of any material or to prohibit any method of construction not specifically prescribed by this code, provided that any such alternative has been approved. An alternative material or method of construction shall be approved where the code official finds that the proposed design is satisfactory and complies with the intent of the provisions of this code, and that the material, method or work offered is, for the purpose intended, at least the equivalent of that prescribed in this code in quality, strength, effectiveness, fire resistance, durability and safety. Similar provisions are contained in the Uniform Codes. ICC-ES may consider alternate listing criteria, provided the listing applicant submits valid data demonstrating that the alternate listing criteria are at least equivalent to the listing criteria set forth in this document, and otherwise demonstrate compliance with the performance features of the codes. Notwithstanding that a product, material, or type or method of construction meets the requirements of the criteria set forth in this document, or that it can be demonstrated that valid alternate criteria are equivalent to the criteria in this document and otherwise demonstrate compliance with the performance features of the codes, ICC-ES retains the right to refuse to issue or renew a listing, if the product, material, or type or method of construction is such that either unusual care with its installation or use must be exercised for satisfactory performance, or if malfunctioning is apt to cause unreasonable property damage or personal injury or sickness relative to the benefits to be achieved by the use of the product, material, or type or method of construction. Listing criteria are developed solely for use by ICC-ES for purposes of issuing ICC-ES PMG listings. Copyright 2010

2 Page INTRODUCTION 1.1 Purpose: The purpose of this listing criteria is to establish requirements for structural adhesive type fittings for installation on copper tube to be recognized in an ICC Evaluation Service, Inc. (ICC-ES), listing. 1.2 Scope: This listing criteria provides the minimum requirements for a structural adhesive fitting system, and prescribes the test requirements for the performance of the fittings and adhesive with copper tube. 1.3 Codes and Referenced Standards: Note: Any standard referenced herein shall be the current edition of that standard. In instances where the applicable code references a different edition of a given standard, the applicant shall also provide documentation of conformance with the code-referenced standard edition International Plumbing Code (IPC), Chapter 6, Water Supply and Distribution. International Code Council International Mechanical Code (IMC), Chapter 12, Hydronic Piping. International Code Council International Residential Code (IRC), Chapter 21, Hydronic Piping. Chapter 29, Water Supply and Distribution. International Code Council Uniform Plumbing Code (UPC), Chapter 3, General Regulations; and Chapter 6, Water Supply and Distribution. International Association of Plumbing and Mechanical Officials Uniform Mechanical Code (UMC), Chapter 3, General Requirements; and Chapter 6, Duct Systems. International Association of Plumbing and Mechanical Officials ASME B1.20.1, Pipe Threads, General Purpose, Inch. American Society of Mechanical Engineers, ASTM D 1002, Shear Strength of Single-Lap-Joint Adhesively Bonded Metal Specimens, ASTM International ASTM D 2556, Apparent Viscosity of Adhesives Having Shear-Rate Dependent Flow Properties, ASTM International.

3 Page ASTM D 2000, Classification Systems for Rubber Products in Applications, ASTM International NSF/ANSI 61, Drinking Water System Components Health Effects. 2.0 BASIC INFORMATION Basic information on the following shall be provided: 2.1 Structural Adhesive Joining System: A structural adhesive joining system consists of a fitting with an internal EPDM elastomer seal, a structural adhesive material that is applied to the pipe or tube and/or the fitting, and the joining of the fitting to the pipe or tube. Structural adhesive joining system components are described in Sections through Structural Adhesive: The structural adhesive material shall comply with the minimum performance requirements within Section Pipe and Tube: The pipe and tube shall comply with the requirements of the applicable ASTM or ASME standard as specified in the IPC, IMC, IRC, UPC and UMC Fittings. The fittings dimensional requirements shall be in accordance with the manufacturer=s specifications and shall be compatible with the pipe or tube described under Section Seals. Seals within the fittings shall be made of EPDM elastomer having a classification of M5CA710A25EA14Z 1 Z 2 Z 3 in accordance with ASTM D 2000, where Z 1 = Original elongation (412) 100% min., Z 2 = B35 compression set 15% max., Z 3 = NSF/ANSI Standard 61 certified Threaded Ends: Threaded ends on adapter fittings shall comply with ASME B Toxicity: Fittings, seals/gaskets and structural adhesive shall comply with NSF/ANSI Installation Instructions: The manufacturer shall submit its installation instructions for the structural adhesive joining system. 2.3 Product and Packaging Identifications: The unit and the package shall be permanently and legibly marked with the manufacturer's name or trademark, and the model number. The product shall also bear the PMG listing mark. The ICC-ES listing number shall be placed on the listed product's packaging or installation instructions.

4 Page GENERAL REQUIREMENTS 3.1 Sizes: The size of structural adhesive fittings shall be 1 / 2 inch through a maximum of 4 inches in diameter. 3.2 Materials: The structural adhesive type fittings shall be designed for joining copper tube. 3.3 Type of System: Structural adhesive type fittings shall be used for joining hot and cold water distribution systems, hydronic piping systems, or air systems. The structural adhesive joining system shall comply with the temperature and pressure rating of the system in which it is installed. Structural adhesive joining systems regulated by this listing criteria shall not be used for joining fuel gas piping systems. 3.4 Temperature and Pressure Rating: The structural adhesive joining system shall have a maximum pressure rating of 250 psi at 180 F. 4.0 TEST METHOD AND PERFORMANCE REQUIREMENTS 4.1 Product Sampling: The samples for testing shall be one of each type of fitting (coupling, elbow, tee, and adapter) unless the test criteria identifies a specific type of fitting. The size of the tested fittings shall be the smallest diameter, the largest diameter and a size in between the smallest and largest. 4.2 Adhesive Material Tests Lap Shear: The adhesive shall be tested in accordance with ASTM D 1002 using a tensile pulling machine and a pull rate of 0.1 in/min (2.5 mm/min).the test coupons shall measure 1 inch wide by 4 inches long (25.4 mm by mm). Copper coupons shall measure 1 / 16 inch (1.5 mm) thick, and plastic coupons shall measure 1 / 8 inch (3.17 mm) thick. The bond line thickness shall be maintained at a minimum of inch (0.127 mm), with 1 / 2 inch (12.7 mm) overlap of the adhesive joint. Surface preparation shall include light abrasion with fine grit sandpaper followed by a dry wipe using a clean cloth. The test shall be performed at both 72 F " 5 F (22 C " 3 C) and 180 F " 5 F (82 C " 3 C), and the test specimens shall be conditioned at the desired test temperature for a minimum of 4 hours before testing. Five repetitions shall be performed for each material. The cured adhesive shall have an average minimum peak pull stress of 1,600 psi (11.0 MPa) at both temperatures Lap Shear after Hot Water Immersion: The cured adhesive shall be tested as described in Section after the test specimens are subjected to a minimum of 1000 hours of immersion in 120 "

5 Page 5 5 F (49 " 3 C) tap water. The adhesive shall be tested within one hour after removal from the hightemperature water. The test shall be performed at 72 F " 5 F (22 C " 3 C). Five repetitions shall be performed for each material. The cured adhesive shall have an average minimum peak pull stress of 1,600 psi (11.0 MPa) Lap Shear after High Temperature and Humidity Exposure: The adhesive shall be tested as described in Section after the test specimens are subjected to a minimum of 1000 hours of exposure in an environment of 120 F " 5 F (49 C " 3 C) and 80 " 5% relative humidity. The adhesive shall be tested within one hour after removal from the environmental chamber. The test shall be performed at 72 F " 5 F (22 C " 3 C). Five repetitions shall be performed for each material. The cured adhesive shall have an average minimum peak pull stress of 1,600 psi (11.0 MPa) Viscosity: The apparent viscosity of the adhesive components shall be individually tested in accordance with ASTM D 2556 at a temperature of 80 F " 3 F (27 C " 2 C). The weighted average viscosity of the mixed adhesive, according to its mix ratio, shall be in the range of 20,000 to 60,000 cp (14.4 to 40.3 lb/(ft s) Long-term Load Test: Lap shear specimens are prepared with the selected coupon material as described in Section The adhesive is allowed to reach full cure. Using dead weights, springs, or other suitable equipment, constant load of 50 " 2 lbf (220 " 10 N) is applied to the test specimen at 72 F " 5 F (22 C " 3 C). The cured adhesive shall hold the force for a minimum of 1,000 hours. 4.3 System Test: Structural adhesive fittings system covered under this listing criteria shall comply with the physical test requirements noted in Sections through For copper tubing, Type L hard drawn copper tubing is used Tension Test: The test sample shall contain a structural adhesive coupling joint cured for a minimum of 24 hours at a nominal room temperature of 72 F (20 C). To assure full cure, the sample is air dried to a maximum of 180 F (82 C) for a minimum of two hours. In no case should the adhesive joints be cured at a temperature higher than 180 F (82 C). The sample shall be restrained on both tube ends and pulled with a tensile tester at a 72 F (20 C) nominal room temperature. The product is pulled to failure or

6 Page 6 sustained force for a minimum of one minute. The joint shall conform to the minimum force requirements specified in Table 1. TABLE 1 FORCE FOR SEPARATION SIZE (inches) FITTING SYSTEM 250 psi (1723 kpa) PRESSURE RATING 1 / 2 (12.7 mm) 400 lbf (1.7 kn) 3 / 4 (19.1 mm) 600 lbf (2.6 kn) 1 (25.4 mm) 1000 lbf (4.4 kn) 1 1 / 4 (31.7 mm) 1500 lbf (6.7 kn) 1 1 / 2 (38.1 mm) 2000 lbf (8.9 kn) 2 (50.8 mm) 2500 lbf (11.1 kn) 2 1 / 2 (63.5 mm) 3000 lbf (13.3 kn) 3 (76.2 mm) 4000 lbf (17.8 kn) 4 (101.6 mm) 5000 lbf (22.2 kn) Unrestrained Hydrostatic Pressure test: The test sample shall be cured in accordance with the manufacturer=s requirements. For hot water piping testing, assemblies are allowed to dwell at a maximum of 180 F (82 C) at a maximum of 20 psi (137.9 kpa) for a minimum of 2 hours. The sample shall not be restrained in the test assembly. Samples shall be filled with water and pressurized to the pressure specified in Table 2 based on the pressure rating of the system. The sample shall be placed in a dry oven at the temperatures specified in Table 2 for the specified period. There shall be no leaks. SIZE (inches) TABLE 2 HYDROSTATIC PRESSURE TEST TEMPERATURE " 5 F (" 2 C) 250 psi (1723 kpa) SYSTEMS: HOT/COLD FOR 5 MINUTES 1 / 2, 3 / 4, 1 72 F (20 C) 1000 psi (6893 kpa) 1 / 2, 3 / 4, F (82 C) 750 psi (5170 kpa) 1 1 / 4, 1 1 / 2, 2 72 F (20 C) 1000 psi (6893 kpa) 1 1 / 4, 1 1 / 2, F (82 C) 750 psi (5170 kpa) 2 1 / 2, 3, 4 72 F (20 C) 400 psi (2757 kpa) 2 1 / 2, 3, F (82 C) 400 psi (2757 kpa) Hydraulic Shock (Water Hammer) Test: A specimen shall be fabricated containing a structural adhesive fitting joint cured for a minimum of 24 hours at a nominal room temperature of 72 F (20 C). To

7 Page 7 assure full cure prior to test, assemblies are allowed to dwell at a maximum of 180 F (82 C) at a maximum of 20 psi (137.9 kpa) for two hours. The specimen shall be mounted in a system with a water pressure at atmospheric pressure. The specimen shall be subjected to a hydraulic shock once every two seconds for 10,000 cycles at a nominal room temperature of 72 F (20 C). The hydraulic shock shall consist of a sudden increase in pressure to a minimum of 450 psi (3102 kpa) minimum. There shall be no visible leakage Vibration Test: A specimen shall be fabricated using six lengths of tube, three couplings and two elbows. Two lengths of tube shall be connected with structural adhesive coupling fittings. The three remaining lengths shall be joined by structural adhesive elbow fittings. The test specimen shall be cured for a minimum of 24 hours at a nominal room temperature of 72 F (20 C). The specimen shall be installed in a test assembly that subjects the system to a vibration while pressurized to a minimum of 400 psi (2414 kpa). The test assembly shall be subjected to 1,000,000 vibration cycles. A vibration cycle shall be a forward and reverse movement of in. (1.6 mm) at a frequency of 25 ± 2 Hz. After the vibration cycling, the specimen shall be hydrostatically tested to a minimum pressure of 600 psi (2759 kpa) for a minimum period of 10 minutes at a nominal room temperature of 72 F (20 C) for pipe sizes of 2 inches in diameter and smaller and a minimum 400 psi (2757 kpa) for a minimum period of 10 minutes at a nominal room temperature of 72 F (20 C) for pipe sizes of 2 1 / 2 inches and larger. There shall be no visible leakage Thermocycling Test for Diameters of 1 / 2 Inch through 2 Inches: For a system rated for both hot and cold water, a test specimen shall be prepared with fittings in accordance with Figure 1. Materials and sizes shall be permitted to be mixed within the test assembly. The specimen shall be cured for a minimum of 24 hours at a nominal room temperature of 72 F (20 C). The system is conditioned by flowing water at a maximum temperature of 180 F (82 C) for a minimum of two hours at a maximum of 50 psi (344 kpa). After conditioning, water flows through the specimen at a maximum temperature of 72 F (20 C) and a pressure of 100 " 10 psi (690 " 69 kpa) for a period of five minutes. The flow is then changed to hot water at a temperature of 180 F " 9 F (82 C " 5 C) and pressure of 100 " 10 psi (690 "

8 Page 8 69 kpa) for a period of five minutes. This cycling continues for 7000 cycles. The water temperature in the piping shall reach the change in temperature within a period of 2.5 minutes. There shall be no visible leakage at the joints being tested. FIGURE 1 SMALL DIAMETER ( 1 / 2-2 INCHES) Note: Pressure in the piping system may vary at temperature transition Thermocycling Test for 2 1 / 2 inch through 4 inch Diameter: A test specimen of Type L hard drawn copper tube shall be prepared with fittings in accordance with Figure 2. The specimen shall be cured for a minimum of 24 hours at 72 F (20 C) nominal room temperature. Condition the system by flowing water through the system at a maximum temperature of 180 F (82 C) for a period of 2 hours at a maximum of 50 psi (344 kpa). The specimen shall be installed in a test assembly that permits the flow of water at a pressure of 145 " 10 psi (100 " 48 kpa) or the manufacturer=s rated pressure, whichever is greater. After conditioning flow water at a temperature of 72 F (20 C) maximum through the specimen for a period of 5 to10 minutes, change the flow to hot water at a temperature of 180 " 9 F (82 " 5 C) for a period of 5 to10 minutes. Continue this cycling for 3000 cycles. The water temperature in the piping shall reach the change in temperature within a period of 2.5 minutes. There shall be no visible leakage at the joints being tested.

9 Page 9 FIGURE 2 LARGE DIAMETER (2 1 / 2-4 INCHES) Static Torque Test: Samples are prepared with a copper structural adhesive coupling joining two equal lengths of hard drawn copper tube. One end of the test assembly shall be fixed and the other end fabricated to accommodate a moment arm. Each test assembly with a structural adhesive fitting shall have a minimum torque applied as specified in Table 3. After the torque is applied, the force is released and the sample is subjected to a water pressure test of 400 ± 7 psi (2760 ± 50 kpa) gauge pressure for a period of one hour at a temperature of 68 ± 9 F(20 ± 5 C). The structural adhesive fitting shall withstand the minimum torque listed in Table 3 and the structural adhesive fitting shall not leak. TABLE 3 TORQUE STANDARD WATER TUBE SIZE (inches) TORQUE 1 /2 15 lb ft (20 N m) 3 /4 18 lb ft (25 N m) 1 29 lb ft (40 N m) 1 1 /4 41 lb ft (55 N m) 1 1 /2 52 lb ft (70 N m) 2 74 lb ft (100 N m) 2 1 /2 96 lb ft (130 N m) lb ft (165 N m) 3 1 /2 147 lb ft (200 N m) lb ft (240 N m) Bending Test. A test assembly shall have two 40-inch (1020 mm) lengths of (hard) copper tubing joined with a coupling with an internal stop. The sample shall be centered between supports spaced 6.0

10 Page 10 feet (1829 mm) apart. A concentrated load shall be applied to the center of the span at the center of the coupling. The concentrated load shall be in accordance with Table 4. A hydrostatic internal pressure of 600 ± 7 psi (4140 ± 50 kpa) shall be applied and maintained for a period of one hour at a temperature of 68 F ± 9 F (20 C ± 5 C). The structural adhesive fitting shall not leak. TABLE 4 CONCENTRATED LOAD STANDARD WATER TUBE SIZE STATIC LOAD (inches) 1 /2 25 lb (110 N) 3 /4 40 lb (180 N) 1 53 lb (240 N) 1 1 /4 68 lb (310 N) 1 1 /2 84 lb (380 N) lb (500 N) 2 1 /2 138 lb (630 N) lb (770 N) 3 1 /2 204 lb (920 N) lb (1090 N) 5.0 LISTING RECOGNITION Installation instructions shall: 5.1 Provide minimum allowable distance for use of a flame. 5.2 Provide procedures for gasket removal/reinstallation. 5.3 Require soft drawn copper to be rounded. 5.4 Provide working time procedures.