MSA4025T Dixon Forged Aluminum 4" Storz x 4-1/2" Male NPT AdapterPart Number Storz Size Male NPT Rigid Thread Working Pressure Old Part # Weight (Lbs.) MSA1515T 1 1 2" 1 1 2" 150 PSI 0. 3140 MSA2015T 2" 1 1 2" 150 PSI SZM2015T 0. 9000 MSA2520T 2 1 2" 2" 150 PSI 1. 0870 MSA2525T 2 1 2" 2 1 2" 150 PSI 1. 1190 MSA2530T 2 1 2" 3" 150 PSI 1. 2740 MSA3030T 3" 3" 150 PSI 1. 3380 MSA4025T 4" 4 1 2" 150 PSI 2. 5800 MSA4040T 4" 4" 150 PSI 2. 6500 MSA5040T 5" 4" 150 PSI SZM5040T 3. 9800 MSA6060T 6" 6" 150 PSI SZM6060T 5. 6470