Technical Notes

• TN-4 - Odorants in Plastic Fuel Gas Distribution Systems
• TN-6 - Polyethylene Coil Dimensions
• TN-7 - Nature of Hydrostatic Stress Rupture Curves
• TN-11 - Suggested Temperature Limits for the Operation and Installation of Thermoplastic Piping in Non-Pressure Application
• TN-13 - General Guidelines for Butt, Saddle and Socket Fusion of Unlike Polyethylene Pipes and Fittings. Document under review and unavailable; contact PPI staff with questions.
• TN-14 - Plastic Pipe in Solar Heating Systems
• TN-15 - Resistance of Solid Wall Polyethylene Pipe to a Sanitary Sewage Environment Document under review and unavailable. Contact PPI staff with questions.
• TN-16 - Rate Process Method for Projecting Performance of Polyethylene Piping Components
• TN-17 - Crosslinked Polyethylene (PEX) Pipe & Tubing
• TN-19 - Pipe Stiffness for Buried Gravity Flow Pipes Document under review and unavailable. Contact PPI staff with questions.
• TN-20 - Special Precautions for Fusing Saddle Fittings to Live PE Fuel Gas Mains Pressurized on the Basis of a 0.40 Design Factor
• TN-21 - PPI PENT Test Investigation
• TN-22 - PPI Guidelines for Qualification Testing of Mechanical Couplings for PE Pipes in Pressurized Water or Sewer Service- Archived.
• TN-23 - Guidelines for Establishing the Pressure Rating for Multilayer and Coextruded Plastic Pipes. Document archived.
• TN-26 - Erosion Study on Brass Insert Fittings used in PEX Piping Systems
• TN-27 - Frequently Asked Questions: HDPE Pipe for Water Distribution and Transmission Applications
• TN-28 - Guide to Differences in Pressure Rating PE Water Pipe between the ASTM and ISO Methods
• TN-30 - Requirements for the Use of Rework Materials in Manufacturing of Polyethylene Gas Pipe
• TN-31 - Differences Between PEX and PB Piping Systems for Potable Water Applications
• TN-32 - UV Labeling Guidelines for PEX Pipes
• TN-34 - was replaced MAB-02
• MAB-02 - MAB Generic Electrofusion Procedure for Field Joining of 14 Inch to 30 Inch Polyethylene (PE) Pipe
• TN-35 - General Guidelines Repairing Buried HDPE Potable Water Pressure Pipes - This document is no longer in publication and has been incorporated into the PPI Handbook of Polyethylene Pipe, Chapter 15.
• TN-36 - General Guidelines for Connecting HDPE Potable Water Pressure Pipes to DI and PVC Piping Systems - This document is no longer in publication and has been incorporated into the PPI Handbook of Polyethylene Pipe, Chapter 9.
• TN-37 - Standard Practice for Installation of Annular Corrugated Profile Wall Polyethylene Pipe for Agricultural Drainage or Water Table Control Unavailable; update planned after completion of ASTM F449 revisions. Contact PPI staff with questions.
• TN-38 - Polyethylene Flanged Joints
• TN-39 - Recommended Practices Regarding Application of Pesticides and Termiticides near PEX Pipes
• TN-42 has been superseded by ASTM F3190
• TN-43 - PE Compound Categorization for Potable Water Applications
• TN-44 - Long Term Resistance of AWWA C906 Polyethylene (PE) Pipe to Potable Water Disinfectants
• TN-45 - Mechanical Couplings for Joining Polyethylene - Document revision is underway, contact PPI staff with questions.
• TN-46 a - Hydrostatic Universal Field Test Procedure
• TN-47 - Polyethylene Resin Testing Requirements to Support ASTM D2513 UV Exposure Limits of Polyethylene Compound
• TN-48 - Guidelines for Choosing Wall Thickness for HDPE Conduit Based on "Mini-HDD" (Horizontal Directional Drilling)
• TN-49 - Recommendations for AWWA C901 Service Tubes in Potable Water Applications
• TN-50 - Guide to Specifying HDPE Conduit
• TN-51 - Polyethylene Pipe Butt Fusion Structure, Process, & Terminology
• TN-52 - Guide to High-Temperature Applications of Non-Potable PEX Pipe and Tubing Systems
• TN-53 - Guide to Chlorine Resistance Ratings of PEX Pipes and Tubing for Potable Water Applications
• TN-54 - General Guidelines for Squeezing Off Polyethylene Pipe in Water, Oil and Gas Applications
• TN-55 - Plastic Piping Materials for Geo Applications
• TN-56 - Plastic Piping Materials Near Recessed Lighting Fixtures
• TN-57 - Proper Integration of Copper Tubing and Components with PP-R Piping Materials for Plumbing Applications
• TN-58 - HDPE Conduit and Duct Handling Guide
• TN-59 - Comparison of HDPE Conduit and Fabric Divider Installed as Innerduct
• TN-60 - Inspection of Plastic Pipes, Fittings and Joints Using Non-Destructive Test Methods and Evaluation
• TN-61 - Coilable HDPE Conduit Ovality and Coil-Set
• TN-62 - Suitability and Fitness of CPVC Piping Systems for Commercial Building Applications
• TN-63 - Safe Pull Strength Calculations for Conduit
• TN-65 - Insulation Recommendations for Plastic Pressure Piping Materials in Residential Applications
• TN-66 - The Development and Evolution of PPI TR-33 - Generic Butt Fusion Joining Procedure for Field Joining of Polyethylene Pipe - new 2023
• TN-67 - Chlorine Dioxide and Plastic Hot- and Cold-Water Plumbing Distribution Pipes - new 2024
• TN-68 - Historical Review of the PE 100-RC Concept - How PE4710 Compares to PE 100-RC - new 2023
• TN-69 - Recommendations When Applying Spray Polyurethane Foam Insulation On and Around Plastic Pressure Pipes & Fittings - new 2023