Volume hole is the special accessories used for the measuring of the oil level and sampling placed on the top of the oil tank. The diameter is 150 millimeter.

      A aluminum tank or copper tank should be installed on the inner wall of the oil tank to make sure the measurement can be carried on at the same level.

      Volume hole has pedal type and rotary type volume hole. It can be installed on the top of oil tank used for the marking the height of oil and sampling. The volume hole is environment protective type volume hole.

 

Pedal type Volume hole sketch map

 

 

Pedal type volume hole specification and size

Notes:  DN150 specification has pedal type  
      DN100 specification has pedal type and hand move rotary type

     Volume hole need to open and close frequently, so it is easy to damage. Please check timely.