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