handgrip, handle, grip, hold - the appendage to an object that is designed to be held in order to use or move it; "he grabbed the hammer by the handle"; "it was an old briefcase but it still had a good grip"

mixing faucet - single faucet for separate hot and cold water pipes

regulator - any of various controls or devices for regulating or controlling fluid flow, pressure, temperature, etc.

stopcock, turncock, cock - faucet consisting of a rotating device for regulating flow of a liquid

hydrant, spigot, water faucet, water tap, tap - a faucet for drawing water from a pipe or cask