Stopcock

A stopcock is a type of valve, usually installed in pipes or tubing to control the flow of a fluid, often water or gas.

It operates by rotating a handle to open or close a passage. This simple mechanism provides a straightforward way to start, stop, or regulate the volume of the fluid being delivered.

Stopcocks are commonly found in plumbing systems, gas lines, and various industrial applications, making them essential for controlling and isolating fluid flow within a system.

The term is frequently used interchangeably with 'tap' or 'faucet,' particularly in colloquial language; however, stopcock more specifically refers to a valve designed to control the flow of a fluid via the rotation of a handle or lever.

Stopcock meaning with examples

• The plumber quickly located the stopcock beneath the sink to shut off the water supply before starting repairs. This small action prevented significant water damage when the faucet was removed.
• During the home inspection, the inspector checked the stopcock near the water heater to ensure its operability and safety, a crucial step in safeguarding the systems in a building.
• Before winter, he closed the stopcock on the outdoor faucet to prevent pipes from freezing and bursting, a vital preventative measure.
• The technician used a specialized tool to carefully adjust the stopcock controlling the gas supply to the furnace, optimizing the heating efficiency and ensuring its safe function.