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The gas pipe is connected to the kitchen fire place through control valves.

Most conventional control valves are designed to a specific set of conditions.

It took ten days from the first eruption to close the control valve and shut off the supply of oil.

This will work with building management systems and individual room controls, in the same way as traditional control valves.

They may last for the summer, but we'll need another set of the control valves before harvest.

Actuators and control valves make up the company's core business.

Sometimes the filter is located between the pump and the control valves.

You check the control valve and it is fine.

But can I risk blowing out my present pressure through the control valve?

I helped him to open the control valve on the back of his helmet.