Aluminum Manhole Cover

Aluminum Manhole Cover 1)Manhole Cover is equipped on the top of tank truck 2)Protect the tank when involving in an emergency

C801A  Manhole Cover

1) Manhole Cover is equipped on the top of tank truck.

2) It is the entrance of fluid transfer operation inspection and maintaining the inside tank. It can protect the tank when involving in an emergency.

3)  Under normal practice, vent is closed When loading and unloading and temperature variation, it will cause the pressure variation inside the tank, such as air pressure and negative vacuum pressure, the vent of manhole cover will be closed automatically in order to keep the tank under a normal pressure.

4) When involving in emergency, such as an accident, the Emergency Exhaust Valve will open the inside tank, meets the setting, in order to prevent explosion.

5) It is internationally accepted, and specified, by oil companies  around the world to assist with the safe transportation of petroleum based products.   

6) It can be supplied as either left hand or right-hand configuration allowing ancillary items such as HLCO,Dip Tube or Mechanical Top operator or to be potioned on the tank center line.

7)   Specifications:

a.  Material: Casting Aluminum

b.  Pressure and vacuum vent fitted as standard for tank breathing.

c.  Size: Optional 16",20"

d.  Emgerncy opening pressure: 21Kpa-32Kpa

e.  Maximum displacement of emergency: 7000M3/h

f.   Main material:Aluminum Alloy carbon steel optional

g.  Installation: Flange or hoop optional

h.  Temperature range: -20C to 70C

Aluminum Manhole Cover