Weld ring: available in light aluminium alloy, carbon steel or stainless steel foxed by 24 bolts
Fill hole: 010″, with rapid closure sealed by a spring that ensures the fill hole cover opening at 300mbar. Also fitted with a double
Cover: safety device against overpressure.
Fittings: internal and external breather vents, vapour recovery valve, dipstick hole, electronic probe, sight glass