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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 40+ 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!

 30 RB Chiller

Water Chillers

Sioux, the #1 brand of water heaters, offers the #1 brand of chillers, Carrier. Sioux air-cooled water chiller systems are available as stationary or portable units with capacities for any size operation. Compared to utilizing ice to cool concrete, Sioux chillers reduce chilling costs by up to 95%. Sioux chillers allow for precise control of water temperature, ensuring consistent concrete and quality.
Click here for more information on Water Chillers

Conventional Steam Cleaners and Pressure Washers for General MaintenanceSioux-Dakota-Series-II.png

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