Product Description
The manhole cover installed on the tank top,used for filling oils,the entrance of intemal tank for examination and maintenance.in the event of an emergency,to ensure the safety of the truck.
Nomally,the breathing valve is closed,but when loading/unloading the oil,and the temperature,the pressure inside the tank will be changed. At this time,the breathing valve will automatically open to exhaust / inspiration to maintain within the pressure in the tank within the specified pressure range.
When emergency situaions happen,such as fire accaidents,pressure of the tank to avoid the occurrence of release the intemal 0.254Mpa,accord with the EN13317:2002 European standards,in line with the national standard NTTC,in line with the international tanker transport standard DOT406.GB18564.1.
Our products are widely accepted in the world,By the national oil companies think of dangerous goods transport with safety auxiliary equipment.
Product name | manhole cover |
Outer diemeter | 16inch 20inch |
Working pressure | 0.6Mpa |
Emergency open pressure | 21Kpa-35Kpa |
Max Emergency vent rate | 7000m3/h |
materials | aluminum/stainless steel |
Working temperature | 40ºC-+70ºC |
SPECIFICATION:
1.Whole diameter: 20"
2.Nominal diameter:10"
3.Emergency open pressure: 21kpa -32kpa
4.Material: Aluminum Alloy
1. Tank Truck Manhole Cover
Jialong 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 environment protection.It is suitable to transpore petroleum ,diesel,kerosene,and the other light fuel,etc.
2. Benefit & Feature
* 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 preotection.
* 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 Exernal Vacuum Valve according to the user's demand.
3. Main Size Data
