ball valve

A controlled clinical study in patients with aortic ball valves.

Special one-way ball valves can sometimes be installed to let water flow out but not back in.

Operation is similar to that of a ball valve, which allows for quick shut off.

The prototype still had one moving part, a ball valve, and was big and clumsy.

He went up into the roof space and replaced the ball valve in the tank.

Many industries encounter problem with residues in the ball valve.

Manually operated ball valves can be closed quickly and thus there is a danger of water hammer.

Is the ball valve in the cold water cistern working efficiently?

For those on a tight budget or in low-power setups, ball valves are ideal.

Water can dribble into this tank through a 12mm lead pipe, plus ball valve, and then supply the house on 22 or 28mm pipes.