Fuel Tanker Petroleum Manhole Cover(Type11)

1. 24 bolts

2. 135°Max.opening angle of manhole cover

3. 2 auxiliary holes can be used for oil and gas recovery valve, anti overflow probe rod and external breathing valve

4. Cast aluminum alloy

Type 11 items optional:

Item No.

Description

WMH03-560C

Outer diameter 560mm, 1 external breathing valve

WMH03-580C

Outer diameter 580mm, 1 external breathing valve

Technical Specifications:

Nominal diameter:

DN500（20″）

Emergency exhaust diameter:

10″

Emergency opening pressure:

21~35KPa

Maximum emergency exhaust flow:

7000m³/h

Operating temperature range:

-20℃ ~ 50℃

Operating temperature range under special working conditions:

-40℃ ~ 70℃