Hurst manufactures a full line of boilers. The 500 Series four pack wet back packaged scotch boilers are available in 100-1,500 hp, pressure to 250 psig. The 400 Series three pass wet back design is offered in 30-1,800 hp. The Cyclone Series is a four pass vertical tubeless design offered in 6-100 hp. The 300 Series is a three pass dry back design offered in 15-800 hp. Other models available include the LPE Series, 45 and 100 Series, multi-fuel hybrids, and Oxy-Miser Series. All models are offered in steam or hot water versions of varying hp.Hurst Boiler and Welding Co.