Description
RKG Series Of Steel Petroleum 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 a car 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) Features Benefits:
a. Material: Coated steel
b. Pressure and vacuum vent fitted as standard for tank breathing.
Various ratings are available to meet operational requirements.
c. Automatic sealing of the P/V vent in a roll over situation
prevents dangerous and costly spillage.
d. Steel cover arm exceeds the requirements of the Australian DROP
tests(AS **********0)
e. Two-stage opening allows safe release of residual compartment
pressure before fully opening the fill cap.
f. **0mm(*0)fill hole for easy drop pipe insertion when top
loading.
g. High quality baseplate and component materials, to international
standards, are used for durability and performance.
7) Technique Specification
a. Setting pressure of vent discharge : 7.*4Kpa
b. Negative opening pressure:*2Kpa~*3Kpa
c. Setting pressure of emergency exhaust valve:
0.***6Mpa±0.**1Mpa
d. Pressure resistance:0.**4Mpa
8) Materials:
Cover: Steel
Weld Ring: Steel
Gasket: Buna-N
