PROPRESS FEMALE ADAPTER 1-1/4"" C X 1-1/4"" FNPT* The Propress System Of Fittings Offers A Flameless Way To Join Copper Pipe And Fittings. The Propress System R equires No Solder Brazing Rods Or Flux. The Fittings Are Pressure Rated To 200 Psi And Have A Temperature Rat ing Of 0?° - 250?° F.