The 3" and 4" brazed plate heat exchangers — Models BP432, BP433, BP434 and BP435 — are suited for refrigerant evaporators, condensers with large chillers and other applications requiring flow rates up to 800 gal/min. The Bell & Gossett BPX brazed plate heat exchangers use stainless steel plates and are vacuum brazed together to form a product that withstands both high pressure and high temperature. All four models have a design pressure of 435 psig; min/max design temperature of 310/450°F (154/232°C); lifting lugs; and support/mounting feet. Also all models are designed in accordance with ASME Section VIII, Div. 1, and include a “U” stamp.