Post by cotswold on May 15, 2008 13:21:04 GMT
Can anyone point me to the calculation formula for the necessary minimum lift of a simple ball operated non-return valve? The figures I am particularly interested in are a 1/4" ball and a 3/16" oriface.
Common sense would seem to indicate that too much free movement of the ball could result in delayed closure. From experience, I suspect that an audible rattle during operation is also an indication of too much free movement.
Common sense would seem to indicate that too much free movement of the ball could result in delayed closure. From experience, I suspect that an audible rattle during operation is also an indication of too much free movement.
