©2003, 2004, Plastics Pipe and Fittings Association Selecting the Proper Plastic Piping Material

2 - Selecting the Proper Plastic Piping Material©2003, 2004, Plastics Pipe and Fittings Association Selecting the Proper Plastic Piping Material To select the proper plastic piping material, conditions of service for the liquid to be handled and the suitability of the materials for those service conditions must be known. Listed is a summary and example of selecting the proper plastic piping material.

3 - Selecting the Proper Plastic Piping Material©2003, 2004, Plastics Pipe and Fittings Association Service Conditions Check List Type Application Type Fluid(s) Working Pressure (min/max) Working Temperature (min/max) Velocity (max) Specific Gravity Viscosity Particulates Piping Size Range Above- or Below-ground Installation Interior/Exterior Exposure Specific Code Agencies/Approvals Fluid-handling Products In Fluid Contact

4 - Selecting the Proper Plastic Piping Material©2003, 2004, Plastics Pipe and Fittings Association TIPS Material Selection Chemical Compatibility Pressure/Temperature Compatibility Piping Size and Product Availability Piping System Joining Method Price Comparability

5 - Selecting the Proper Plastic Piping Material©2003, 2004, Plastics Pipe and Fittings Association Example – Service Conditions Service Conditions Application:Metal Ore Smeltering Fluid:Sulfuric Acid, 70% concentration Working Pressure: psi Working Temperature:70-130°F Velocity:Less than 3 ft/sec Specific Gravity:1.57 Viscosity:60 ssu Particulates:minimal Piping Sizes:½ - 6” Installation:Above ground Exposure:Interior Code Agencies:Standard Required Fluid- handling Equipment: Pipe / Fitting / Valve / Pump * Conditions depicted in bold are major selection criteria for this application.

6 - Selecting the Proper Plastic Piping Material©2003, 2004, Plastics Pipe and Fittings Association Example – Chemical Compatibility Partial Chemical Resistance Chart ChemicalPVCCPVCPPPVDFPE Temperature (°F) Sulfuric acid, 50%RRRRRRRNRRRRR— Sulfuric acid, 60%RRRRRRRNRRRRR— Sulfuric acid, 70%RRRRRRNR RRRR— Sulfuric acid, 80%RRRRRRNR RR—R Sulfuric acid, 90%RNRRRRR RR—R Sulfuric acid, 93%RNRRR R RR—R Sulfuric acid, 100%NR — R = Recommended— = No information availableNR = Not Recommended Service Conditions Fluid:Sulfuric Acid, 70% concentration Working Temperature:70-130°F  

7 - Selecting the Proper Plastic Piping Material©2003, 2004, Plastics Pipe and Fittings Association Maximum Operating Pressure Ratings(psi) of Schedule 80 Piping / 73°F Nom. Pipe Size (in.)PVC / CPVCPE (SDR 11)PPPVDF Example – Pressure Compatibility Service Conditions Working Pressure: psi Working Temperature:70-130°F Piping Sizes:½ - 6” Temperature Correction Factor for Piping Temp. (°F)CPVCPEPPPVCPVDF CPVC 0.62(280) = 174 psi PVC 0.30(280) = 84 psi (system max. is 105 psi) PVDF 0.62(190) = 118 psi   

8 - Selecting the Proper Plastic Piping Material©2003, 2004, Plastics Pipe and Fittings Association Example – Joining System Results of Previous Tests CPVCPEPPPVCPVDF Chemical Compatibility Pressure/Temp. Compatibility    Product Availability CPVC PVDF Joining System CPVC = Solvent Cementing PVDF = Heat Fusion 

9 - Selecting the Proper Plastic Piping Material©2003, 2004, Plastics Pipe and Fittings Association Example – Cost Comparison Estimates of 100-ft, 6-in Pipelines for Various Materials* MaterialsPiping Costs ($)Ratio CS PVC Sch. 8011, CPVC Sch. 8018, Carbon Steel Sch. 4022, St. Steel 304L Sch. 4045, Aluminum alloy 303 Sch. 4048, St. Steel 316L Sch. 4049, Copper50, PVDF Sch. 8063, Titanium Sch , Alloy 200 Sch , Zirconium Sch , * Adapted from Chemical Processing, June 1999  

10 - Selecting the Proper Plastic Piping Material©2003, 2004, Plastics Pipe and Fittings Association Example – Results Results of Previous Tests CPVCPEPPPVCPVDF Chemical Compatibility Pressure/Temp. Compatibility Cost Comparison Selected Material CPVC     

11 - Selecting the Proper Plastic Piping Material©2003, 2004, Plastics Pipe and Fittings Association Example Addendum      If sulfuric acid concentration were 93%, only PVDF would be selected If sulfuric acid concentration were 60% and the maximum temperature were 120°F, both CPVC and PP would be considered If maximum temperature did not exceed 110°F, both PE and PVC would be considered

12 - Selecting the Proper Plastic Piping Material©2003, 2004, Plastics Pipe and Fittings Association TIPS are... Environmentally sound Easy and safe to install Reliable Long-lasting Cost-effective