DIY Doctor

Main navigation

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?
Rank: Labourer
Progress to next rank:
Posts: 1
Joined: Thu Sep 03, 2015 12:22 pm


Simply Build It

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.
Rank: Labourer
Progress to next rank:
Posts: 2
Joined: Fri Oct 09, 2015 4:23 pm

Postby Jezfullham » Tue Apr 25, 2017 4:45 am

You can read about full bore and reduced bore.
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.
Rank: Labourer
Progress to next rank:
Posts: 2
Joined: Tue Apr 25, 2017 4:36 am

Display posts from previous
Sort by
Order by

  • DIY How to Project Guides
  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!

  • Related Topics