The valves created to let off steam are no longer working anyway and it will become all too apparent in the not to distant future!

As these valves must work at high pressure, the valve faces are accurately ground to shape.

His mask fitted well, the valve worked properly, the large cylinder in use was two-thirds full.

When these valves do not work as they should, blood collects in your legs, and pressure builds up.

He quickly figured out how the valve worked and lit it, then closed the dome.

This can limit how well the valve works to relieve your symptoms.

There is a small chance that the valve will not work.

Your doctor will need to check from time to time to make sure that your valve is working.

Advantages: No directional valve and better response, the circuit can work with higher pressure.

The valve that should have prevented water from entering the snorkel did not work properly.