Relay controlling valve structure for twin-tap faucet

摘要

A relay controlling valve structure for twin-tap faucet, including a valve seat, a valve stem and a pushing block. The valve seat is a hollow sleeve-like member made of plastic material and formed with outer thread on upper portion. A water-sealing ring is disposed around a middle portion of the valve seat. An annular groove is formed between the water-sealing ring and the lower end of the valve seat. Two opposite water inlets are formed on the wall of the upper portion of the annular groove. A hexagonal socket is formed at upper end of the valve seat. A stem hole is formed below the hexagonal socket. The upper portion of the stem hole has s conic face and the lower portion of the stem hole is enlarged. Several stopper ribs are disposed on the wall of the enlarged lower portion at intervals. Each stopper rib has a shorter guiding rib extending toward the center for guiding the valve stem to linearly move up and down. The lower end of the enlarged lower portion is further enlarged into a conic shape. A stem head is formed at the upper end of the valve stem. A reverse conic water-sealing washer is inserted at the adjoining portion between the stem body and the stem head. The lower end of the stem body is formed with an insertion groove. The pushing block is a conic body made of rubber material with a plane head and formed with a central fitting hole. The bottom of the pushing block is formed with an annular check groove.