Series 4 valves are available in the 3/2, 5/2, 5/3 versions in the two basic configurations:
with electric actuation and mechanical spring return
with electro-pneumatic actuation and return with internal and external servo-piloting.
Series 4 valves are fitted with a manual override that allows stable actuation and are suitable for all particularly heavy-duty applications.
All Series 4 valves use Series U, G, A8 and H8 solenoids.
3/2 NC pneumatically controlled valves become NO when the supply is on port 3.
