Fuel Tanker Petroleum Manhole Cover(Type13)

1. Flanged

2. 24 bolts

3. 135°Max.opening angle of manhole cover

4. 2 auxiliary holes can be used for oil and gas recovery valve and anti overflow probe rod

5. Carbon steel

Type 13 items optional:

MH03T-580Ab

Outer diameter 580mm, 1 internal breathing valve

MH03T-580Bb

Outer diameter 580mm, 2 internal breathing valve

Technical Specifications:

Nominal diameter:

DN500（20″）

Emergency exhaust diameter:

10″

Emergency opening pressure:

21~35KPa

Maximum emergency exhaust flow:

7000m³/h

Medium:

Diesel and gasoline

Operating temperature range:

-20℃ ~ 50℃

Operating temperature range under special working conditions:

-40℃ ~ 70℃