C801A-560/580

© Whole diameter: 20″

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

 

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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