Types of connection for hose fittings are barb and volute. Volute connection type can have spiral on both inside and outside. All 3 ends of Y hose joint can be the same or one side can be larger than the other two ends.
Series of Y hose joint are:
2 side barb and 1 side volute
3 side barb
Y Hose Joint
Y Hose Joint Volute | Y Hose Joint Outside Spiral | Y Hose Joint Inside Spiral |
 |  |  |
Outside Spiral and Volute (in.) | Inside Spiral (in.) | |||
| 1/2″ | 1-1/2″ : 1/2″ | 2″ | 3″ : 1-1/2″ | 2″ : 1″ |
| 3/4″ : 1/2″ | 1-1/2″ : 3/4″ | 2-1/2″ : 1″ | 3″ : 2″ | 2″ : 1-1/4″ |
| 3/4″ | 1-1/2″ : 1″ | 2-1/2″ : 1-1/4″ | 3″ : 2-1/2″ | 2″ : 1-1/2″ |
| 1″ : 1/2″ | 1-1/2″ : 1-1/4″ | 2-1/2″ : 1-1/2″ | 3″ | 3″ : 1-1/4″ |
| 1″ : 3/4″ | 1-1/2″ | 2-1/2″ : 2″ | 4″ : 1-1/2″ | 3″ : 1-1/2″ |
| 1″ | 2″ : 1/2″ | 3″ : 1/2″ | 4″ : 2″ | 3″ : 2″ |
| 1-1/4″ : 1/2/” | 2″ : 3/4″ | 3″ : 3/4″ | 4″ : 2-1/2″ | 4″ |
| 1-1/4″ : 3/4″ | 2″ : 1″ | 3″ : 1″ | 4″ : 3″ | |
| 1-1/4″ : 1″ | 2″ : 1-1/4″ | 3″ : 1-1/4″ | 4″ | |
| 1-1/4″ | 2″ : 1-1/2″ | |||
่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่
่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่ ่
