Weld ring: Aluminium light alloy, carbon steel and stainless steel versions available. 12 bolts manhole connection.
Manlid:Ø 10″ with quick closure. Leak-tightness assured by one spring that guarantees opening at 300 mbar. Also equipped with a double security device against overpressure opening.
Fittings: intemal and external breather vent, vapour recovery valve, dipstick mounting hole, electronic probe, porthole.