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Precast Applications

Water Heating System for Pre-Cast Operations 

PWP water heater

A specially-designed water heater is available for use in pre-cast operations where a low volume of hot water is needed on a continuous basis. This unit takes the place of conventional boilers for pipe, vault, pre-stress or block operations. The PWP-1000 system includes a one million BTU/H water heater, a 225 gallon (851.47 liter) mild steel water tank, and a pumping station. The pumping station consists of two pumps, one to circulate water through the heater and one to discharge water from the system. 


  • Sioux has been the #1 supplier of water heaters to the concrete industry for 30+ years.
  • Comes complete with motorized damper.
  • The entire system is mounted on a rugged steel skid for portability.
  • Choose from oil, LP, natural gas, or the new combination burner that allows easy conversion between oil and gas.
  • All Sioux units are built to ASME code and are National Board registered.
  • Operation is simple and the units provide reliable, trouble-free service for many years .
  • Features include liquid level sensors with water solenoid valve, liquid level sight gauge, adjustable tank temperature control and thermometer.




Steam Steam-Flo Steam Generator Speeds Up Curing

Sioux has manufactured the Steam-Flo steam generator since 1939. Thousands are in operation worldwide, providing years of trouble-free service. The Sioux Steam-Flo® is a portable steam generator that is designed to speed up the curing process for pre-cast concrete, pipe, pre-stress and block operations.

  • This low pressure boiler saturates the curing area with steam, uniformly heating the concrete. This, in turn, speeds up the normal curing process.

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  • Benefits are increased output and faster turnover of forms.
  • Due to its portability, the Steam-Flo is ideal for use in overflow production and outlying areas.
  • Excellent source of heat for thawing and de-icing aggregates.
  • This unit can be used in place of a conventional boiler for a variety of commercial and industrial applications.
  • The generator produces 370-1,725 lbs. (167 - 782 kg) per hour of dry steam in minutes.
  • The Steam-Flo provides continuous, unlimited steam.
  • The unit is easy to maintain and built to last.
  • Mountings include portable, stationary, or over-the-road trailer.
  • The unit can be outfitted with an optional water tank and generator for completely self-contained operation.
  • The Steam-Flo vessel is registered with the National Board of Boiler and Pressure Vessel Inspectors, meets requirements of CSD-1 of the ASME Code, and is built to Section IV of the ASME code
  • Sioux’s LowNox Steam-Flo meets California’s South Coast Air Quality standards!

Sioux-Dakota-Series-II.pngConventional Steam Cleaners and Pressure Washers for General Maintenance

Sioux also has a line of steam cleaners and pressure washers ideal for cleaning production machinery and plant equipment.

  • Dissolve grease, oil, dirt and grime
  • Excellent for cleaning buildings and vehicles as well as general facilities and grounds maintenance.
  •  Available as self-contained units with an integrated pressure washer and either a gasoline or diesel engine on a heavy-duty skid or over-the-road trailer; they are excellent for cleaning at remote locations or where there is no water or power source available.
  • Sioux steam cleaners feature 320°F (160°C) saturated steam. Pressure washers provide 200°F (93.3°C) hot water pressure washing.
  • Combination units are also available which provide steam cleaning, hot pressure washing and cold pressure rinse in one compact unit.


Click here for Precast Application flyer