Image Crimp Fuel Oil Coupling Product Options Part Number Size Thread Material H5212CS 1" NPT Brass H5211CS 1" NPSH Brass H5232CS 1-1/2" NPT Brass H5231CS 1-1/2" NPSH Brass H5222CS 1-1/4" NPT Brass H5221CS 1-1/4" NPSH Brass H5272CS 1-3/8" NPT Brass H5271CS 1-3/8" NPSH Brass