C801A-450

© Whole diameter: 16″

© Blinding Hole Design:
In the main plate of the manhole
cover, There are two blinding holes
can be installed with Optic Sensor,
Dip Tube or External Vacuum Valve
according to user’s demand.

Description

© Benefit and Features:
Aluminum alloy surface is treated
by oxidation to improve the anti-
corrosion.
Can be installed double P/V vent
valve according to requirement to
increase the flow rate of air.

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