Black & Galvanized Malleable Gas Fitting Couplings
| Part Size | Description | APD Part # |
| 1/8" | 1/8" NPT Coupling | |
| 1/4" | 1/4" NPT Coupling | |
| 3/8" | 3/8" NPT Coupling | |
| 1/2" | 1/2" NPT Coupling | 4003 |
| 3/4" | 3/4" NPT Coupling | 4004 |
| 1" | 1" NPT Coupling | 4005 |
| 1-1/4" | 1-1/4" NPT Coupling | 4006 |
| 1-1/2" | 1-1/2" NPT Coupling | 4007 |
| 2" | 2" NPT Coupling | 4008 |
| 2-1/2" | 2-1/2" NPT Coupling | |
| 3" | 3" NPT Coupling | |
| 4" | 4" NPT Coupling |