The Function of a Double Regulating Valve

Written by david karanja
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The Function of a Double Regulating Valve
A double regulating valve controls water temperature. (valve image by J-F Perigois from Fotolia.com)

A double regulating valve, also referred to as a balancing valve, is used in plumbing to control water temperature. This type of valve is widely used in showers.

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Function

Double regulating valves are pressure sensitive. They react to pressure changes from the hot and cold water flowing into them. This causes the valve to either open or close a port, thus maintaining pressure balance. Balancing this pressure between the two water supplies keeps the temperature consistent.

Benefits

When there is a sudden change in water, such as the change caused by flushing a toilet, a balance valve keeps the shower temperatures constant. This means that there will not be a sudden cessation in the flow of cold water when a toilet flushes.

Replacement

Most new construction is equipped with balancing valves. Replacing an outdated valve in an existing house may require the help of a professional plumber.

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