PURPOSE: To eliminate the independent valve receiwer equipped with the valve seat, by forming the valve seat at rear of the hose connecting section while providing a valve board hooking section at one side of the valve seat.

CONSTITUTION: The valve board stopping section 9 at the suction hose connecting section 5 in the valve board hook section 9, 10 is formed into an elongated chip the tip of which is contacted or approached to the lower end of a pump operating tube 3 thus to prevent the removal of the hooked value board 11a, while the valve board stopping section 10 at th delivery hose connecting section 6 is formed into a horizontally extending elongated chip and a projection 12 is formed on the midway upper face to stop the valve board 11b by means of said projection. Consequently the independent valve receiver equipped with the valve seat is not required.