Monthly Archives: October 2013

Do I Need a Main Relief Valve on Diesel Fire Pumps?

One of the more common misconceptions we see when it comes to diesel fire pumps is that you are no longer required to have a main relief valve, also incorrectly referred to as a relief valve in some cases, for your fire pump installation. In order to comply with the National Fire Protection Association’s code 20, or NFPA 20, you need to determine two different things first. These are:

  • The expected performance of the specific diesel fire pump being considered
  • The expected maximum static suction pressure feeding the fire pump

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