MSA4040F Dixon Forged Aluminum 4" Storz x 4" Male NST(NH) AdapterPart Number Storz Size Male NST(NH) Rigid Thread Working Pressure Old Part # Weight (Lbs.) MSA1515F 1 1 2" 1 1 2" 150 PSI 0. 3000 MSA2015F 2" 1 1 2" 150 PSI 0. 8000 MSA2525F 2 1 2" 2 1 2" 150 PSI SZM2525F 1. 1700 MSA3025F 3" 2 1 2" 150 PSI 1. 5710 MSA4025F 4" 2 1 2" 150 PSI SZM4025F 3. 6700 MSA4040F 4" 4" 150 PSI 3. 0940 MSA4045F 4" 4 1 2" 150 PSI 3. 3300 MSA5025F 5" 2 1 2" 150 PSI SZM5025F 4. 6900 MSA5050F 5" 5" 150 PSI 3. 9800