Abstract: A valve apparatus for use in industrial plants and systems. The valve apparatus can a first ball valve, a second ball valve, a third ball valve, and a fourth ball valve disposed between first and second blocks. A bleed valve assembly is disposed between the first ball valve and the second ball valve, and the fourth ball valve is disposed between the second and third ball valves. The bleed valve assembly is configured with threads or a cam lock for connection to a flex hose. The bleed valve assembly can include a globe valve. The valve apparatus can be implemented as a DBB (Double-Block and Bleed) valve assembly that includes the first, second, third, and fourth ball valves. The fourth ball valve disposed between the second and third ball valves can function as an extra bleed valve.