Am using a csv on my shallow well jet pump. Prior to using csv I had a large bladder tank & was able to check how many gpm my pump was producing by timing pump on & off etc. Now with the csv & very small bladder tank do I just collect water from outside hose bibb (that does not run thru filter tank) for 1 minute & measure the water collected during that 1 minute ?
V / R Grunt
V / R Grunt