Ask about all wetted materials
Brazed families offer different joining materials. Request the exact material specification rather than assuming that similar-looking models are equivalent.
Describe the fluid fully
Provide composition, concentration, additives and cleaning fluids. Plate corrosion resistance does not automatically establish brazing-material compatibility.
Obtain model-specific confirmation
GNS and XCR are described differently in the Arasta portfolio. For ammonia, deionised water, pool water or chloride-bearing fluids, check concentration, temperature and every wetted material. This guide is not a universal compatibility chart.
Prepare for the discussion
- Fluids, composition and relevant material requirements
- Flow rates and inlet/outlet temperatures on both circuits
- Design conditions and allowable pressure drop on each side
- Exact model, nameplate and current technical documents