400 Series Part NumberEnd Connection TypeEnd Connection Inlet SizeEnd Connection Outlet SizeOrificeAB1B2CDEFGH 400Fractional Tube Fitting1/81/80.1722.341.171.170.400.382.501.380.2519/32 406Male NPT1/81/80.1721.820.910.910.400.382.501.380.2519/32 408Female NPT1/81/80.1721.820.910.910.400.382.501.380.2519/32 410Male NPT1/41/40.1721.820.910.910.400.382.501.380.2519/32 412Male NPT to Female NPT1/41/40.1722.001.001.000.440.442.501.380.2519/32 414Male NPT to Fractional Tube Fitting1/41/40.1722.110.911.200.400.382.501.380.2519/32 416Male NPT to Fractional Tube Fitting1/43/80.1722.110.911.200.400.382.501.380.2519/32 418Female NPT1/41/40.1722.001.001.000.440.442.501.380.2519/32 422Fractional Tube Fitting1/41/40.1722.401.201.200.400.382.501.380.2519/32 428Fractional Tube Fitting3/83/80.1722.401.201.200.400.402.501.380.2519/32 430Male NPT3/83/80.1722.261.131.130.440.442.501.380.2519/32 436Fractional Tube Fitting1/21/20.1722.621.311.310.510.512.501.380.2519/32 438Female NPT3/83/80.2502.501.251.250.750.751.380.252.7519/32 440Female NPT1/21/20.3122.621.311.310.750.753.000.252.8625/32 442Female NPT3/43/40.4382.901.451.450.750.750.350.254.001-11/32 444Female NPT110.5623.621.811.811.020.900.350.254.001-11/32