A valve device includes a receptacle having an upper and a lower ports for coupling to sprayer devices, a front wall having a lower opening, an upper housing attached the front wall for allowing water to flow from the housing into the receptacle, the receptacle includes a vertical partition to separate an interior into a front and a rear chambers which are communicating with the housing and the rear chamber of the receptacle. The vertical partition includes a lower aperture formed by a valve seat. A lateral stem includes a plug slidable to engage with the valve seat of the vertical partition, or to block the lower opening of the front wall, to effectively control the water to flow out through the upper or the lower ports of the receptacle.