Brass stop cocks
V51043
A stop cock (also commonly known as a stop valve or isolating valve) is a type of valve used to completely start or stop the flow of a fluid (water or gas) through a pipe. It is a fundamental component in plumbing and gas systems for control and safety.
Shut-off / Isolation: Its main job is to allow a user to completely stop the flow of water or gas to a specific section of pipe, an appliance (like a sink, toilet, or washing machine), or an entire property. This is crucial for:
Maintenance & Repairs: Allowing work to be done on fixtures without draining the entire system.
Emergency Control: Quickly stopping the flow in case of a leak or burst pipe.
Seasonal Control: Shutting off water to outdoor taps in winter to prevent freezing.
Regulation (Limited): While not its primary design purpose, a stop cock can be used to partially restrict flow to reduce pressure. However, this can cause wear and damage to the valve seat over time, so it's not recommended for long-term flow control.
