The hardware used to connect the valve to the tubing is called a mandrel, and the mandrel is installed in the tubing string. There are two types of mandrels, they are Conventional and Side pocket.
| Conventional Mandrels for Gas Lift Valve (1" or 1.5") | ||||||||
| No. | Tubing Size | OD of Tubing | ID of Tubing | Max OD (For 1" Gas Lift Valve) | Max OD (For 1.5" Gas Lift Valve) | Total Length | Connection | |
| Upper | Lower | |||||||
| 1 | 2-3/8 EU | 2-3/8 in (60.3mm) | 1.995in (50.7mm) | 4.13in (105mm) | 4.577in (116.3mm) | 4ft (1.22m) | 2-3/8UPTBG BOX | 2-3/8UPTBG PIN |
| 2 | 2-7/8 EU | 2-7/8 in (73mm) | 2.441in (62mm) | 4.69in (119mm) | 5.13in (130.3mm) | 4ft (1.22m) | 2-7/8UPTBG BOX | 2-7/8UPTBG PIN |
| 3 | 3-1/2 EU | 3-1/2 in (88.9mm) | 2.992in (76mm) | 5.32in (135mm) | 5.859in (148.8mm) | 4ft (1.22m) | 3-1/2UPTBG BOX | 3-1/2UPTBG PIN |
| 4 | 4-1/2 EU | 4-1/2 in | 3.958in (100.5mm) | 6.32in (160.5mm) | 6.875in (174.6mm) | 4ft (1.22m) | 4-1/2UPTBG BOX | 4-1/2UPTBG PIN |
