GY801C 560/580 Aluminum Manhole Cover

Technical Specification

Diameter: 20"
Filling Hole Diameter: 10"
Emergency Open Pressure: 21KPA~32KPA
Max Working Pressure: 0.6MPa
Max Emergency Flow Rate: 7000M3/H (When 34Kpa)
Material: Aluminum Alloy
Installment Mode: Flange Type
Temperature Range: -20 +70℃

Manhole Cover is installed on the top of the tanker to prevent the inside fuel from leakage when the tanker is over rolled. With P/V vent inside to adjust the pressure. When there is pressure differences inside and outside the tanker, it will automatically inlet or exhaust air to adjust the pressure so that it can ensure the safety and environmental protection. It is suitable to transport petroleum, diesel, kerosene, and the other light fuel, etc.
Emergency Exhausting Design, when the tanker truck is in high temperature condition, the manhole will automatically exhaust the air inside to release the pressure, ensuring the safety of the tanker.
With P/V Vent inside, when there is pressure differences inside and outside the tanker, it will automatically inlet or exhaust air to adjust the pressure so that it can ensure the safety and environmental protection.
Secondary Open Design, when open the up binder plate, it will release the pressure out to prevent the workers from pushing over.
Blinding Holes Design, in the main plate of the Manhole, there are three blinding holes can be installed with Vapor Vent Valve, Optic Sensor, DIP Tube or Outernal Vacuum Valve according to the user's demand.

GY801C 560/580 Aluminum Manhole Cover

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