Approval record: Upstream
Buyer records both fluids, plate-grade preference if any, whether copper brazing is acceptable, gasket constraints, quantity, destination and optional budget. If material compatibility is still open, the packet should say a chemistry review is required, not that this website has already cleared the fluids. Drawings can be exchanged after contact because the inquiry form has no upload control.
Control boundary
Compare who supplies insulation, drip trays, spare plates, FAT witness and site piping. Put those responsibilities on the same scope list as the exchanger. Working pressure, allowable pressure drop and cleaning method must match the construction. Connected load, three-phase supply, cooling water quality, PLC interface and footprint apply when a skid is in the quote.