From a distance they allow you to measure the amount of water passing through pipes.

They describe the amount flowing through an area for a given time period. Different devices for measuring a flow are flowmeters, volumeters, etc.

The ball valve is a full bore quarter turn valve for an on/off application. It can be manual or automatic (electric or pneumatic). The variety of seats and body materials allows it to respond to multiple applications in the industry.

The ball valve is a full bore quarter turn valve for an on/off application. It can be manual or automatic (electric or pneumatic). The variety of seats and body materials allows it to respond to multiple applications in the industry.

The ball valve is a full bore quarter turn valve for an on/off application. It can be manual or automatic (electric or pneumatic). The variety of seats and body materials allows it to respond to multiple applications in the industry.

They allow air to be controlled in water supply networks by ensuring continuous and automatic evacuation, but also by letting air in and out at a high speed.