Abstract: A plurality of manifold valve assemblies each including pairs of generally vertical valve cylinders each cylinder having actuator rods that are coaxial with each other, the rods being independently actuatable by their respective actuators. Each cylinder has an inlet port at its top each connected to a different supply conduit and each being connected by a crossover conduit near its lower end to the lower end of the other cylinder of the pair. One of the bottom ports of each pair is connected to a drain, thereby forming a leak detector, while the other bottom port of each pair is connected to a line supplying a clean-in-place liquid. Valve seat 45 is positioned below valve plug 40 so that it is closed by extension of actuator rod 32.

Abstract: A manifold valve assembly, composed of a plurality of valve subassemblies, each of the subassemblies including at least five valves. At least a first one of the valves in each subassembly is in fluid flow communication with a supply source, and at least a second one of the valves in each subassembly is in fluid flow communication with a fluid distribution conduit and at two of the valves in each subassembly, when open, discharge fluid into a drain and serve as leak detector ports. A fifth valve, when closed, separates the first and third valves from the second and fourth valves, the valves being interconnected by fluid flow conduits to selectively allow flow of fluids from the supply source to the distribution conduit and to prevent flow thereof to a drain.