Its strength advantages are as CLEAR as the natural EVOH resin inner liner found in Franklin Fueling System’s new UPP EN14125 Standard Pipe. This latest revolution in fuel piping features an innovative clear inner lining made of natural EVOH resin; a feature which allows UPP EN14125 Standard Pipe to achieve an exceptional Class T1 temperature rating. Class T1 strength to you means reliability and performance as UPP EN14125 Standard Pipe is rated for use in temperatures ranging from -40 °C to 50 °C. The latest in coextrusion technology allows us to permanently bond the clear un-pigmented, natural EVOH resin fuel contact layer seamlessly with a rugged PE100 high-density polyethylene outer structural layer, providing you with a new level of protection, performance and dependability.