Flexible, corrosion resistant, hot/cold potable water, CTS (Rigid copper tube) size to be used with Quick connect push on fittings and/or brass and poly alloy PEX insert barb fittings. Barbed insert PEX fittings are secured the use of either stainless steel cinch clamps or copper crimp ring methods. Type B Silane method PEX has more antioxidants and thermal stabilizers which is vital for chlorine ratings and recirculation systems. Type A, B, and C are European system designations not rating/grading system for PEX. Do not use duct tape, pipe dope, threading compound, mineral or linseed oil. Toughen pipe each and every 30” vertically and horizontally. Offer protection to pipe when entering/exiting slab or walls. Do not kink or expose to sunlight. Minimum clearance to water heaters, boilers, wood burning appliances. 18” recessed lights, 12” gas appliance vents, 6” NSF 61 FDA, CSA/ASTM, UPC listed/approved. 25 year warranty even if used with other manufacturers ASTM SDR 9 certified fittings. Covers materials. Labor isn’t pro rated. Maximum working pressure: 160 P.S.I. (11 bar) at 73.4 F. (23 C.) / 100 P.S.I. (6.9 bar) at 180 F. (80 C.) /80 P.S.I. (5.5 bar) at 200 F. (93 C.). Manufactured in line with American society for testing and materials (ASTM International) F876 and F877 to SDR 9 dimensional standards. Listed by the NSF International to NSF Standards 14 and 61 to be used in potable water systems. Listed by NSF International to be in compliant to the Uniform Plumbing Code. Labeled B137.5 which indicates that it’s compliant to the CSA Standards B137.5. Certified to PEX 5006 (replaces NSF CL R) to be used in continuous hot water recirculation systems. ASTM E84 and CAN/ULC S102.2 smoke developed and flame spread classification. Fire resistant per CAN/ULC S101 and ASTM E119 08.