HouseChalk
Volume control valve
A volume control valve adjusts the flow of water to a specific shower outlet independently from the mixing valve.
Why it matters
It lets you run body jets at low flow while the rain head runs at full flow, giving precise control over each outlet.
Where people get this wrong
A volume control valve adjusts flow, not temperature. A diverter valve switches between outlets. They work together in multi-outlet showers.
Real-world example
You turn the volume control handle to reduce the body jets to a gentle stream while keeping the overhead rain shower at full flow.
Where this hits your build
This term shows up during construction and affects decisions that are hard to reverse once the work moves forward. Understanding it now saves time, money, and frustration later.
Most people do not just struggle with terms. They struggle with the decisions tied to them.
See how HouseChalk helps with the decisions behind terms like this