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Oilstop Anti-siphon valves

Oilstop siphon protection valves or anti-siphon valves are used as safety devices in oil pipes according to DIN 4755 to prevent the contents of the tank from leaking.

Siphon protection valves must be installed in the suction line above the maximum permissible tank level before it reaches a lower level.
Both valves have a general type approval (AbZ) and are pressure balanced in the direction of the tank.