RECOMMENDATIONS & STATEMENTS
RECOMMENDATIONS
- Recommendation B 2020 - Thermoplastic Piping for the Transport of Pressurized Gases
- Recommendation D 2009 - Recommended Color Coding for Loose (non-captive) insert Stiffeners for Use With Mechanical Fittings on Polyethylene Pipe -Document under review and unavailable; contact PPI staff with questions
- Recommendation E 2016 - Recommendation Against Mixing Hydronic Heating Water with Potable Water
- Recommendation F 2016 - Testing PEX Pipe and Tubing Systems with Air
- Recommendation G 2017 - Epoxy Pipe Coatings in Plumbing Systems with Plastic Components
- Recommendation H 2020 - Direct Connection of Plastic Piping Materials to Tankless Water Heaters
STATEMENTS
- Statement A 2019 - Relative Oxidative Aggressiveness of Chloramines and Free Chlorine Disinfectants on Crosslinked Polyethylene (PEX) Pipes Used in Treated Potable Water
- Statement G 2017 - Indented Markings
- Statement N 2021 - Barrier Properties of Plastic Pipe Used for Potable Water Service
- Statement Q 2007 - Position Statement on Polyolefin Materials for Closed Loop Earth Coupled Heat Pump Applications (This document is obsolete, please refer to TN-55)
- Statement S 2013 - Caution Statement on Heat Fusion Joining of Polyethylene Pipe And Fittings Based On Color
- Statement U 2020 - PPI Position Statement on the Use of PCR Materials in Polyethylene Pipe & Conduit
- Statement V 2017 - Recommended Color Code for Solid Wall Plastic Pipe and Conduit
- Statement W 2011 - Position Statement on Improved Material Categories for Polyethylene Pressure Pipe - Archived
- Statement Y 2017 - Taste and Odor of Drinking Water from Plastic Piping Systems
- Statement Z 2017 - Use of Calcium Carbonate Additives in HDPE Conduit
- Fusion Statement 2010 - Joining PE Pipe Using Heat Fusion Technology Document under review and unavailable. Contact PPI staff with questions.