At the entrance to the pump 1.5 atmospheres
Corrosion was only in the mixer, in one (Poly) of two nozzles (from the truck), the needle valve rusted, it changed every 2-3 months.
No more has been replaced in the system.
The system works 8 years. The system was turned on every 2 weeks. All this time, the system was charged with Iso and Poly components.
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