To provide a T-type connector capable of extending a branch flow passage from the bottom part of a gas/liquid flow passage and preventing water in the flow passage from entering the branch flow passage.

This connector 10 is provided with a horizontal material 11 having a through-way 12 for a main supply flow passage and a leg 13 having a through-way for a branch flow passage. The ends of these are provided with collet type coupling devices 15 and 17 for receiving pipes forming the main and branch flow passages, the horizontal material 11 is provided with an upright head part 18 arranged oppositely to the leg 13 having an inner cavity 19 and the leg 13 is provided with an extended part 25 having an entrance port in the cavity of the upper side of the through-way crossing the through-way into the cavity and protruded from the upper end of the leg 13 upward. Gas is permitted to flow through the horizontal material 11 to the inside of the leg and the flowing-in and the accumulation of any liquid in the through-way are prevented and the branch flow passage is connected to the leg 13.