Spool Valve controls fluid power applications.
Press Release Summary:

Original Press Release:
Controlling Fluid Power Applications with Norgren - Herion's 97100 Series NAMUR Valve
Norgren - Herion offers a simple, soft seal, spool valve for directional control of rotary and linear NAMUR mount actuators. Featuring optimal flow in a small package, and a mechanical return spring for safe, reliable switching, the valve comes complete with a reversible seal, allowing for either 3/2, or 5/2 control. A push button manual override with locking capability comes standard, as does the exhaust air feedback design which lets the spring housings of single acting actuators breathe clean instrument exhaust air, rather than potentially contaminated surrounding air. Easily interchangeable coils, match a host of domestic and international standards.