Manhole Cover-GETC801A-560/580
Manhole Cover TECHNICAL DATA
whole diameter of Manhole Cover			20"
Norminal Diameter of Manhole Cover			10"
Emergency open pressure of Manhole Cover			21KPa-32KPa
Manhole Cover Max emergency flow rate			7000m³/h (When 34 Kpa)
Manhole Cover Material			Aluminum Alloy
Manhole Cover Installment mode			Flanged
Temperature range of Manhole Cover			-20~+70℃

Main Size Data
Name	Model		D0	D1	D2	H	b	z-d
manhole cover	GET	C801A-560	ϕ560	“ϕ”530	“ϕ”482	88	12	24-ϕ11
	GET	C801A-580	ϕ580	“ϕ”542	“ϕ”496	88	12	24-ϕ11

Description of Manhole Cover
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 where 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
Benefit and Features of Manhole Cover
1. 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 2. 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. 3. Secondary Open Design When open the up blinder plate, it will release the pressure out to prevent the workers’ from pushing over 4. 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 Ou Tamale Vacuum Valve according to the user’s demand 5. Superior Process Performance The main Plate is stamped, it is more light and sturdy