Ball Valves - High Pressure and Low Pressure - What is the Difference?


Postby GH101 » Thu Sep 03, 2015 12:55 pm

I am considering replacing the ball valve unit on a domestic cold water tank. Having looked through the information and advice available, I understand that there are High Pressure and Low Pressure valves. Can I fit either type without a problem?
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Postby private&confidential » Sat Oct 10, 2015 8:32 am

It is the size of the orifice in the ball valve,small hole high pressure ,big hole low pressure .Try high pressure first then swap to low pressure if there is insufficient flow.
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Postby Jezfullham » Tue Apr 25, 2017 4:45 am

You can read about full bore and reduced bore.
Example:
Valves such as the Swiss Fittings AG valve A-622 TLD is a full bore, and will have low reducing of drag, while the reduced bore A-590 TLD valve, will have a small ball within the valve body, thus the drag will increase.

I hope that is what you mean. Otherwise, the seals within valves are one of the vital elements when it comes to pressure. If you need really high pressure valves i would recommend needle valves.
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