Abstract: The present invention provides a novel faucet with a non-circular slider assembly to which a resilient seat-washer is attached. In a preferable embodiment of the invention the slider assembly has a hexagonal cross-section. In embodiments of the invention the slider assembly is driven by a rotatory stem operated with a handle. The rotatory stem is provided with a helical groove mating with a faucet body of a complementary shape so that upon rotation of the stem the slider assembly is advanced towards or withdrawn from a sealing seat. Thus, when the handle of the stem is rotated by a user, the stem and the hexagonal slider assembly associated with it, are moved by the interacting force generated between the pair of helical threads, towards or away from the seat depending on the rotation direction.

Abstract: This device is an automatic faucet with three temperature settings activated by a pressure switch which is mounted on or near the floor by the user's foot. The invention includes a device which will, after a period of time, automatically turn the water off after the switch has been depressed. In the preferred embodiment, the user upon approaching the sink, could, by viewing indicator lights, readily discern whether a hot, cold or warm temperature setting has been selected.