YOUNG HEAT EXCHANGER F-302-EY-2P HEAT EXCHANGER 239953 125PSI 350F NEW $499 Young Touchstone Model No. F-302-EY-2P is a Shell Tube Two-Pass heat exchanger with integral hub design. Our interchange is a drop in replacment, rugged design, and durable construction, and as a compatible interchange for Young Radiator this unit has a Brass hub, 3.62-inch diameter x 18" long Brass shell, 0.25" Copper tubes, Cast Iron end bonnets, and Optional zinc anodes. This unit has a maximum working pressure of 300 PSI, operating temperature of 300F compared to the original Young F-302 series heat exchanger which had a limitation. Units are available using standard materials such as a brass shell with cast iron bonnets and copper tubes, to more corrosion resistant materials such as 90/10 copper nickel (CuNi) tubing, bronze bonnets, and zinc anodes suitable for brackish or seawater applications.