Deutsch 
English Oventrop diaphragm anti-siphon valve Oilstop V, (2104203) Siphon protection for fuel oil EL, oil flow rate max. 200 l/h at 40 mbar, protection height continuously adjustable from 1-4 m, sealable, test pressure max. 6 bar, operating temperature max. 40° C, connection G 3/8" female thread.