What does "all pass" ball valve mean?
The ball valve is divided into full bore ball valve, ball valve and three or four valve diameter contraction, full bore ball valve inside and outside of the size of the aperture is consistent, overall were flat, parallel and pipeline fluid, and necking is outside the hole is larger than the hole, the medium flow through the three or four inconsistent.
Simply put, from the valve side of the runner hole, put a ball of the same diameter can pass to the other side, that is, all pass ball valve
