The present invention provides a faucet for tapping a liquid stored under pressure of a gas in a container that has less moving parts subject to wear or breakage, and has a housing made of multiple parts which can be disassembled so the faucet mechanism can be easily cleaned, repaired, or replaced. The faucet mechanism contains a piece of flexible tubing and an arrangement of a pinch roller valve mechanism that compresses the flexible tubing to shut off flow of liquid through the tubing. In one arrangement of the present invention, since the housing does not move and does not come in contact with the beverage being poured, the housing is made of a non-metallic material, such as a plastic or petroleum-based material, which is less expensive than the previous brass or stainless steel housing.