COAMING STEEL VOH300
455mm (18″) diameter MANHOLE COVER
Cast Aluminium construction with four equipment mounting positions the VOH410 Series is the premier manhole cover in the Liquip range. This manhole cover is 455mm (18″) in diameter and is ideal for either top or bottom loading.
MOUNTING Clamp-Band mounted to corresponding coaming VOH300-15P Aluminium Coaming VOH300-17 Mild Steel Coaming – Not Drop Test Approved
VENTS All Liquip manhole covers come standard with 1″ thermal pressure and vacuum vent complying with recognised industry codes. They are Australian Drop Test Approved and incorporate a rollover ball to completely shut off the vent in event of a tanker rollover. Please Note: The pressure vacuum vent is for thermal expansion only and not for bottom loading vapour venting or vapour recovery.
A 225mm emergency pressure vent (also called fire engulfment vent) is also included on all models enabling bulk pressure release in event of a fire or rollover.
INSPECTION HATCH The 225mm emergency vent doubles as an easy to open inspection hatch for top loading or visual inspection of tank contents. A two stage opening mechanism enables internal pressure to be released before completely opening the hatch cover.
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