WDRKG-AL-560

WDRKGseries manhole cover is installed on the top of oil tanker and used for loadingoil ,checking gas recovery,mending the internal inlet.

Alsocan protect the tanker under the emergency. When loading oil,the outsidetemperature’s change will lead the tanker’s inside pressure to change. Then themanhole cover’s breathing valve can automatically make the tanker pressure tothe normal level. If some emergency happen , like the tanker overturn, thebreathing valve will automatically close to avoid the tanker’s explosion whenunder the fire condition..

 

Material:

Body:Casting ALalloy

Breathingvalve: ALalloy

Handle:steel

Safetylocker: SS

Seal:NBR

 

Feature:

Alltypes manhole cover has the breathing valve

Breathingvalve's different pressure set can fit different operation requirement

Breathingvalve has the automatically seal's function,can avoid leakage under emergency

FitEN13317:2002 standard

 

Parameter:



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