Product information

This product supersedes product no: 777187


  • Maintains design output and efficiency of evaporators for extended periods
  • Improves distillate quality by controlling foaming and carry over


  • Reduces downtime and maintenance costs
  • Economical in use



  • Approved by the UK Department of Trade Marine Safety Agency.

Safety Data Sheet (SDS)


Directions for use

Although best results will be obtained by starting the treatment with a clean evaporator, NALFLEETâ„¢ Maxi-Vap Plus Liquid will improve performance of an evaporator which has not been de-scaled.

Dosing Method
The daily requirement of NALFLEETâ„¢ Maxi-Vap Plus should be mixed with evaporated water or condensate and diluted to the normal working level of the mixing tank. The solution can then be applied continuously via a flow meter to the evaporator shell or into the salt water feed line to the evaporator.

Dosing and Control
The flow rate should be adjusted to empty the tank over a 24 hour period. WSS can supply a suitable dosing tank and pump for this purpose. The Marine Safety Agency of the Department of Trade and Industry has agreed that NALFLEETâ„¢ Maxi-Vap Plus Liquid can be used as a scale inhibitor in the feed water evaporators producing fresh water for drinking and culinary purposes. Typical dose rate is 10mls per ton of evaporator output.