CHIL-GARD
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PERMA-PIPE / RICWIL Preinsulated Piping Systems Preinsulated PVC Piping System for the Underground Distribution of Chilled Water and Condenser Water Below 100°F PVC Outer Protective Jacket Polyurethane Foam Insulation Gasketed Bell Joint Product Description: PERMA-PIPE®/RICWIL® Chil-Gard® is a completely preinsulated system designed for underground chilled water distribution. Installation costs can be accurately established in advance. All components used are made of the same basic materials offering considerable savings in heat gain because of the combined insulation efficiency. PVC Service Pipe: Gasketed bell joint construction accommodates pipe movement and eliminates expansion and contraction stresses within the system. No additional expansion devices are needed. PVC pipe will not rot, rust or corrode and is impervious to electrolic environments. Glassy, smooth, inner walls cut pressure losses by nearly 50%. PVC pipe has a flow coefficient of C = 150 as compared to new steel pipe with C = 130. "New Pipe" interior is maintained for the life of this pipe. Bell and spigot connections eliminate waiting time necessary for a chemically welded joint. Pressure can be applied immediately after joints are made and piping is properly anchored. Pipe is designed for use at maximum hydrostatic working pressure of 160 psi at 73°F (Class 160) and 200 psi at 73°F (Class 200). PVC pressure pipe is in accordance with ASTM D-2241. Polyurethane Foam Insulation: Polyurethane foam insulation completely fills the annular space between the service pipe and the outer jacket and has the lowest thermal conductivity of all commercial insulation 0.18 Btu-in/hr-ft2-°F. The insulation shall be a nominal 2.0 lb/ft3 density and 90% closed cell structure, providing a high resistance to water absorption. PVC Outer Jacket: Polyvinyl chloride plastic outer jacket, in accordance with ASTM D-1784, provides tough, rigid, yet flexible protection for both the insulation and inner service pipe. The PVC jacket's Factory-Applied Moisture Barrier corrosion-resistant composition makes it immune to galvanic or electrolytic attack. Unaffected by most chemicals, it will not oxidize. It also has adequate load-bearing strength to withstand H-20 loading with two feet of properly compacted cover. Used as an outer jacket, PVC increases the efficiency of an insulated piping system. To complete the vapor barrier provided by the PVC jacket, each end of each unit is sealed against moisture by means of a factory applied moisture barrier coating. Fittings: Straight lengths and fittings are joined with integral bell and spigot joints, including a rubber sealing ring. Steel pipe connections at a building and/or manhole area are easily accomplished by inserting beveled steel pipe into a PVC bell, or by flanged connections. When Chil-Gard units terminate with a spigot end, double belled couplings are available for making connections.

Standard Sizes* Pipe Size Jacket Insulation Size Thickness Easy Field Installation Class 160 Weight Per Unit Class 200 Weight Per Unit UNDISTURBED TRENCH WALL For complete instructions see installation manual. Typical Unit PVC JACKET POLYURETHANE FOAM INSULATION CONCRETE THRUST BLOCK FIELD INSTALLED PRIOR TO HYDROSTATIC TESTING PVC PIPE PVC SERVICE PIPE FACTORY APPLIED MOISTURE SEAL SPIGOT END *Other sizes and combinations available on request CHIL-GARD GUIDE SPECIFICATION 1.0 GENERAL and steel pipe shall be made by inserting steel pipe into PVC bell end or by flanged connections. The...