All CPVC SDR 11 Series hot and cold water plumbing pipe shall be manufactured from a Type IV, Grade I Chlorinated Polyvinyl Chloride (CPVC) compound with a Cell Classification of 24448 (CPVC4120) per ASTM D1784. The pipe shall be manufactured in strict compliance to ASTM D2846, consistently meeting and/or exceeding the quality assurance test requirements of this standard with regard to pressure rating, material, workmanship, burst pressure, flattening resistance, and extrusion quality. The pipe shall be manufactured in the USA by an ISO 9001 certified manufacturer. All pipe shall be packaged on-line immediately after its manufacture and stored indoors after production at the manufacturing site until shipped from factory. This pipe shall carry the National Sanitation Foundation (NSF) seal of approval for potable water applications. The pipe shall have a flame spread rating <25 and a smoke development rating <50 when tested and listed for surface burning characteristics in accordance with ULC-S102.2 or equivalent; this information shall be printed on the pipe along with the mark of the listing agency. This pipe shall also meet the requirements of CSA B137.6 for CPVC hot and cold water distribution piping. All pipe shall be manufactured by GF Harvel., Inc, trade name GF Harvel® FlowGuard Gold® CTS CPVC.