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PULSE Installation, Commissioning and Servicing Manual - Revision 19
4.4 Materials Not Recommended to be used with DEF
Gallagher Fuel Systems have seen instances where severe corrosion has occurred on
components within the Tatsuno flow meter as a direct result of the use of copper, brass,
bronze or other copper alloy components within the Diesel Exhaust Fluid delivery system.
ISO 22241-3 2008 Diesel Engines – NOx Reduction Agent AUS 32 – Part 3 – Handling
Transportation and Storing provides a list of materials not recommended for use within
systems that come in contact with Diesel Exhaust Fluid.
This list includes non-ferrous metals and alloys; copper, copper alloys (e.g. brass), zinc
and lead.
All components used in delivery systems for Diesel Exhaust Fluid must comply with ISO
22241-3 2008.
Any issues arising from the presence of copper or other non-recommend materials
within the delivery system will not be covered by the Gallagher warranty.
5
GREASING THREADED CONNECTIONS
Grease, petroleum jelly or other suitable thread protectant is commonly applied to
threaded connections within fuel dispensers to allow for easy disassembly.
Gallagher endorses this practice and reminds installers and service technicians that grease
should be applied to the threaded pipe when a hose is attached during installation or
service of any Gallagher fuel dispensers.
Be sure not to over-lubricate this connection as no grease should come in contact with the
hose or the Blue face seal on the inside of the hose fitting.
Grease should be applied starting 1-2 threads back from end of the male pipe fitting.
Take care to avoid possible contamination of DEF.
Figure 1
Greasing Threaded Connections
