Description Overview Johnston four-pass wet-back steam boilers available in multiple horsepower ratings. Specifications 1985, 350 hp, 150 psi, steam, Johnston burner, gas/2 oil. 1999, 400 hp, 200 psi, steam, Johnston 30 ppm nox burner, gas/methane/2 oil. 2001, 500 hp, 150 psi, steam, Johnston burner, gas. 1998, 600 hp, 150 psi, steam, Johnston 30 ppm nox burner, gas. 1987, 750 hp, 150 psi, steam, IC burner, gas/2/6 oil. 1992, 750 hp, 200 psi, steam, Johnston burner, gas/2 oil. 1993, 750 hp, 200 psi, steam, Johnston burner, gas/2 oil. 1997, 800 hp, 200 psi, steam, Johnston burner, gas/2 oil. 1998, 800 hp, 150 psi, steam, Johnston burner, gas (quantity: 2). 1997, 1200 hp, 150 psi, steam, Johnston burner, gas/2/6 oil. 1997, 1300 hp, 200 psi, steam, Johnston burner, gas/2 oil (quantity: 2). 1990, 1500 hp, 150 psi, steam, Johnston burner, gas/2/6 oil. 1997, 1500 hp, 150 psi, steam, Johnston burner, gas/2/6 oil. Condition Used industrial equipment. Included Burner as specified per unit. Not specified.