The valve 6440 is a servo-assisted piston valve. The stopper and the core guide

tube are welded together to increase pressure resistance and leak-tightness. The

coils are moulded with highly chemically resistant epoxy. Sliding rings increase the

service life for dry gases. Cartridge and flange connections, and solenoids with

automotive plugs (IP6K9K), are available for optimised use in fuel cells.

Type description