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Quick Details

  • Place of Origin: Zhejiang, China (Mainland)
  • Brand Name: Jialong
  • Model Number: C801C-460
  • Application: tanker trailer, Tanker Truck
  • Material: Aluminum
  • Dimensions: 20"
  • Product name: Tank Truck Parts Manhole Cover Pressured Manlid
  • Size: 20inch
  • Installment mode: flanged tyoe
  • Temperature Range: -20°c ~+70°c
  • Max emergency flow rate: 7000m3/h(when 34kpa)

Packaging & Delivery

Packaging Details box
SIZE: 49*30*52
G.W.: 24KGS
Delivery Time Shipped in 15 days after payment

Tank Truck Parts Manhole Cover Pressured Manlid

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.

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.


* Larger Angle Opening

  The new designed blinder plate can make the cat hole opening's angle larger than the old one.

3. Installation drawings



Relavent Manhole series

20inch aluminum manhole cover

ADR manhole cover

Carbon steel manhole cover



Company introduction


Zhejiang Jialong Mechanical Equipment Co., Ltd, is the company which concentrates Design, Development, Manufacture, Marketing Sales, etc. In one, which produces the relative accessories for the Road Dangerous Fuel Transportation Parts. Since our establishment 1990's, we insist the company's principle" To ensure the Quality for surviving, to keep the promise for developing"all the time to keep positive developing tend.





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