20 Inch Carbon Steel and Aluminum Manhole Cover

• Casting Method: Special Casting
• Casting Form Material: Metal
• Casting Metal: Carbon Steel
• Casting Form Usage Count: Permanent
• Surface Treatment: -
• Surface Roughness: Ra0.05
• Model NO.: C801TA-500
• Coating: -
• Machining Tolerance: +/-0.01mm
• Standard: API
• Certification: CE, ISO 9001:2008
• Transport Package: Carton
• Specification: 20 Inch
• Trademark: GLME
• Origin: China
• Production Capacity: 10000PCS/Month

Product Description

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Product Description

Technical Data

Whole diameter	20"
Nominal diameter	10"
Emergency open pressure	21kPa~35kPa
Max emergency flow rate	7000m³/h(when 34KPa)
Material	Aluminum Alloy
Installation	Hooper type
Temperature Range	-20~+50ºC

Function & Feature

1. Big plate is made of aluminium plate to punch forming. The material of big plate,the quantity of blinding holes and dimension can be produced according to user's demand.
 

2. Can be installed double P/V vent valve according to requirement.
 

3. The base is made of sheet roll pressure welding,the material and height can be made according to customer's requirements.
 

4. Used Hooper type instead of flange type.

Manhole cover is installed on the top of tanker.When pressure is massively increased in oil tanker, it can exhaust air by emergency exhausting device,the small plate have inlet P/V vent. It can suitablefor gasoline, diesel,kerosene and other light fuel.There are blinding hole on the manhole cover and it install optic sensor, vapor vent valve, dip tube and other accessories.

 

1. Emergency Exhausting Device

When the tanker truck in the high temperature condition, 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 difference inside and outside of the tanker , it will automatically inlet or outlet air to adjust the pressure so that can ensure the safety and environment protection.

3.Secondary Open Design

When Open the up binder plate, it will release the pressure out to prevent the operator against dangerous Kick-Back that can e experience due to build up of residual pressure.
 

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