We offer quite a few configurations within our double block and bleed valves. Many of our double block and bleed valves are: A Block and bleed manifold is actually a hydraulic manifold that combines a number of block/isolate valves, commonly ball valves, and one or more bleed/vent valves, normally http://needle-valve64174.jiliblog.com/23789017/the-best-side-of-double-block-and-bleed-valve