Water pressure

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    • #273019
      MasterPlumbers
      Keymaster

      What are the highest and lowest acceptable water pressures in household plumbing? What is the best single pressure reading?

    • #286733

      The minimum @ a faucet running full should be 8 PSI and a Maximum of 85 PSI
      Or depending on local codes of the water department and department of buildings.

      The “BEST SINGLE reading ” is the one that does not exceed the velocity of the piping material installed to cause erosion or hydraulic shock waves from quick closing and also meets the K factor requirements for a fire suppression system for the highest located fixture and or sprinkler head. The BEST Single flow is also designed with a peek demand in fixture units and developed length taken into consideration with modern flow restrictors.

      Here is an article that may help you in your quest of Pressure / volume

      http://www.masterplumbers.com/plumbing/plumbviews/watersupply.

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