Available for either 1/2-in. or 3/4-in. pipe sizes, this line of servo-assisted modular valves fits easily into Burk ert's modular valve manifolds to build centralized and decentralized fluid-distribution or fluid-collection systems. The valves comprise a modular extendible valve system, Type 6227, that can be combined in a number of combinations with up to twelve valves in a single valve manifold. Each valve may be assembled either in the "collecting" or "distributing" function by easily twisting the valve insert, making any combination of fluid control functions possible in a single manifold. Additional functions, such as temperature indication or flow measurement, can be added by integrating a corresponding sensor directly into the valve manifold. Integrated back-flow prevention check-valves are also standard in the manifold assembly. Burkert-USA, 2602 McGaw Ave., Irvine, CA 92614. Tel. (949) 223-3139; fax (949) 223-3198; www.burkert-usa.com