Water Flow Formula Home › Forums › Public Forums › General Plumbing › Water Flow Formula This topic has 1 reply, 2 voices, and was last updated 23 years, 5 months ago by wpc. Viewing 1 reply thread Author Posts 12 Oct 2000 at 10:54 pm #273679 MasterPlumbersKeymaster Please tell what the formula is to determine water flow through a pipe. Based on typical pressure (?) through 1/2″pipe. Thank You 13 Oct 2000 at 1:36 am #288294 wpcParticipant I believe The Plumber’s and Pipefitter’s Calculations Manual by R. Dodge Woodson would be a good investment for you it covers a lot of topics. Author Posts Viewing 1 reply thread You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In