Description Overview Five Superior steam boilers available. All units are dry-back design. Specifications Unit 1: 2000, 30 hp, 3 pass, 15 psi, steam, Gordon Piatt burner, gas. Unit 2: 1995, 300 hp, 3 pass, 150 psi, steam, IC burner, gas. Unit 3: 1980, 350 hp, 3 pass, 150 psi, steam, IC burner, gas. Unit 4: 1997, 350 hp, 2 pass, 150 psi, steam, IC burner, gas. Unit 5: 1999, 350 hp, 3 pass, 150 psi, steam, IC 30 ppm nox burner, gas/2 oil. Condition All units are used industrial boilers. Included Each boiler includes its burner as listed. Not specified.