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DIESELGUARD NB 25 KG

Product Code

Product group:
653
Product number:
571349

NALFLEET™ Dieselguard NB™ is a dry powder, nitrite/borate based compound with organic corrosion inhibitors for use in cooling water systems.

Product information

Features

  • By creating an oxide film on the metal surfaces, electrolytic corrosion is prevented
  • Effective against cavitation and erosion
  • Compatible with non-metals such as hoses, gaskets and seals
  • Compatible with glycol used for frost protection
  • The product can be used for corrosion inhibition in many types of closed recirculation systems such as:
    • Diesel engine cooling water systems
    • Compressor cooling water systems
    • Centralised cooling systems
    • Hot water heating systems
    • Auxiliary machinery cooling systems

Benefits

  • Approved by major diesel engine manufacturers
  • Simple control test

Specification

Approvals

  • Approved by major engine manufacturers

SDS

Directions for use

Dosing method

NALFLEET™ Dieselguard NB should be dosed into a suitable point in the cooling water system, after it has been thoroughly mixed with water. If the expansion tank is used then adequate circulation must be assured.

Sampling and testing

The WSS Test Kit provides the necessary equipment to carry out the control tests. Obtain a representative sample of the cooling water. Carry out the tests immediately after sampling (following the instructions given in the Test Kit) and log the results in Waterproof. The results should be sent to WSS as stated in the Waterproof instructions. Use the dosage chart overleaf to adjust treatment to obtain the optimum level. It is important that testing is carried out at least once per week, to ensure levels of treatment are correct.

Dosing and Control

Initial dosage for an untreated system is 2 kg/1000 litres of untreated distilled water. This will bring the treatment up to the minimum level of 1000 ppm. The dosage chart given below is for convenience in calculating the amount of NALFLEET™ Dieselguard NB required to bring the treament level to the suitable point between the minimum and maximum - this being 1440 ppm nitrite.

Normal nitrite limits: 1000-2400 ppm nitrite (NO2)

After a short period of use the operator will be able to easily determine the dosage required to maintain a proper treatment level.

Nitrite (as PPM NO2)

0

    180

    360

    540

    720

    900

    1080

    1260

    1440

    1620 - 2400

NALFLEET™ Dieselguard NB kg/1000 ltr

2.88

   2.52

    2.16

    1.80

    1.44

    1.08

     0.72

     0.36

       0

           0

N.B. Buffering agents in NALFLEET™ Dieselguard NB maintain pH values within suitable limits when the product is dosed as recommended.

The pH should be maintained between 8.3 and 10.0 by the treatment.

The engine manufacturer's recommendations for water quality should always be complied with. Chloride levels should be as low as possible. Most engine manufacturers recommend a maximum of 50 ppm chlorides.

For this reason, Wilhelmsen Ships Service recommends to use distilled water as make-up.

NALFLEET™ Dieselguard NB is very water soluble. One kilogram of NALFLEET™ Dieselguard NB should be dissolved in 10 litres of hot water before adding it to the system.