Capability Brochure
The use of an integrated system or manifold system allows reduced procurement time, single source manufacturer service, reduction of engineering time, and improved quality and reliability.  Manifold systems provide trouble-free performance while minimizing usable space.
Other advantages:

Performance of the system vs performance of each component part can be specified.  
Quick and efficient.
Guarantees a compatible system
Single source for spares
Manifold components can be removed from the unit without system downtime.