Heat exchanger blind plugs


Heat exchanger blind plugs

As exchangers are faced with chemical corrosive fluids, leakage is most common due to tube failure. To prevent leakage we provide two solutions as follows:

  • Using blind plugs to block failed tube
  • Using sleeve to repair tube

Retubing is last choice because 10% is allowable block range of tubes and it will postpone retubing and cause heat exchanger to continue work.

A hydraulic mandrel applies pressure to plug and cause plastic deformation on corrugated iron based seal. Seal material will be different with respect to operation.


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