Before revision: A Block and bleed manifold is a hydraulic manifold that combines one or more block/isolate valves, usually ball valves, and one or more bleed/vent valves, usually ball or needle valves, into one component , for interface with other components (pressure measurement transmitters, gauges, switches, etc.)
After revision: A Block and bleed manifold is a hydraulic manifold that combines one or more block/isolate valves usually ball valves, and one or more bleed/vent valves, usually ball or needle valves, into one component , for interface with other components (pressure measurement transmitters, gauges, switches, etc.)