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C835-560 Manhole Cover
C835-560 Manhole Cover

Benefit and Features :The open pore of big plate is bigger than normal manhole , it is convenient for operator enter and exit of tanker.
Big plate is used the plate to punch forming. The material of big plate and dimension can be produced according to user`s demand.
Can be installed double P/V vent valve according to requirement to increase the flow rate of air.

Manhole Cover C835-560/580

●Whole diameter:20"

●Benefit and Features :The open pore of big plate is bigger than normal manhole , it is convenient for operator enter and exit of tanker.

Big plate is used the plate to punch forming. The material of big plate and dimension can be produced according to user`s demand.

Can be installed double P/V vent valve according to requirement to increase the flow rate of air.

Technical Data:

Emergency open presure: 21Kpa~32Kpa

Max Emergency Flow Rate: 9000m³/h(When 34Kpa)

Material: Aluminum Alloy

Installment Mode: Clivered Type

Temperature Range: -20℃~+70℃

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