adhesive when the cylindrical portion 11 is inserted into the fixing hole 41 on an outer circumferential portion 43 of the main body 40 in which the fixing hole 41 and the passage 42 are formed a spiral portion 44 which is screw coupled with a spiral hole 53 of an inlet 51 and a cut portion 45 are formed the cut portion 45 may be rotated in a state where a tool for joining the main body 40 to the spiral hole 53 is fit to the cut portion 45 as shown in fig6 in order to join the main body 40 to the spiral hole 53 the valve body 50 has the inlet 51 to which the main body 40 is inserted when the main body 40 is inserted into the inlet 51 a ball valve 60 mounted in the valve body 50 is mounted at a position where it pushes the tip portion 23 of the opening and closing portion 22 which blocks the passage 42 while moving to a closed position so as to return the tip portion 23 to its original state the ball valve 60 is formed in a globular shape in such a way as to be rotated by a hand grip 62 so that the through hole 61 is communicated with the inlet 51 and the outlet 52 or blocked from the inlet 51 and outlet 52 according to the rotated position in other words in the state where the through hole 61 is communicated with the inlet 51 even though the opening and closing portion.