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pulp paper cover photoEnsuring your plant is running as efficiently and reliably as possible is critical to survival in today’s global marketplace.

Hydro-Thermal heating systems will maximize your uptime with their minimal maintenance requirements and high reliability. Our precise temperature control and non-scaling operation will improve your product quality, ensure consistency and production efficiency. Replace your sparging system today and experience the best in inline heating.

Hydro-Thermal’s technology works by mixing steam and process liquids completely while delivering consistent temperature and instantaneous heating. For more information on our advanced direct steam injection technology, click here.

Heating products utilizing direct steam injection

The type of heater you need is dependent on how it will be used. No matter what your application, Hydro-Thermal has the solution for every application in the paper production area.

All of our heaters share unique benefits, including internal modulation, self cleaning ability and rugged design and construction.

Here is what makes each solution unique:

Industrial Hydroheater (Also known as the Jetcooker™)

  • Volume capability: flow rates up to 6,700 gpm [1,522 m³/hr]
  • Precise temperature control ±1°F [.50°C]
  • Available in a variety of alloy materials including: Stainless Steel (316, 316L, 317L, AL6XN, 254SMO & 2205), Hastelloy & Titanium.
  • Adjustable pressure drop to control the shear (high or low)
  • High steam capacity
  • High solids capability
  • Hydroheater has a liquid turndown of 2:1 for starch conversion, and up to 3:1 for water-like fluids. If a greater turn-down is required consult Hydro-Thermal Engineering.
  • Available in sizes from 1/8” to 12”
  • Rating: 1/8” to 2-1/2” NPT (300 psig at 450 F), 2” to 12” flanged (150# 195 psig at 400 F, 300# 300 psig at 450 F, PN16 16 barg at 221 C, PN40 20.7 barg at 232 C)
  • Right angle design
  • All Industrial Hydroheaters include a combining tube. An extended combining tube may be recommended for a large ΔT (high temperature rise). Please contact Hydro-Thermal for more details.
  • For more information on the Hydroheater, click here.


  • Volume capability: flow rates up to 25,000 gpm [5,678 m³/hr]
  • Precise temperature control ±1°F [.50°C]
  • Body materials in a variety of materials, including316/316L SS, 254 SMO, 1.4408 Harmonized, Hastelloy; consult factory for other materials.
  • Straight through design
  • Very low pressure drop
  • Moderate steam capacity, up to 50°F ∆T under most conditions.
  • Handles heavy slurries, medium consistency pulp stock or higher solids content.
  • Up to 10:1 liquid turndown
  • Connections: ANSI Class 150; ANSI Class 300; DIN PN16, PN25, PN40, Others upon request
  • Viscosities up to 40,000 cP, consult factory for higher values
  • Ensures thorough mixing and uniform temperature profile
  • Low shear, maintains chunk size
  • High flow rates
  • Easily plumbs into existing plant utilities.
  • For more information on the Solaris, click here.

Non-Obstructing Heater (NOH)

  • Volume capacity: 30 up to 6,900 gpm (6.8 up to 1,567.2 m3/hr)
  • Body and stem plugs in 316SS, and diffuser in 316L or 17-4PH (other materials available pending on request or per application)
  • Straight tube design allows unrestricted flow
  • Low pressure drop
  • Trim heating control for high turndown
  • Able to handle abrasive (sand or grit) and large particulate/fibrous materials
  • Available in sizes from 2” to 12”
  • Heater rating of 300 PSIG @ 450°F
  • Raised face flanges designed per ANSI B16.5 with lugged connections
  • For more information on the NOH, please click here.

Actuator Options Available


Hydro-Thermal's heaters utilize a Fisher reverse-acting diaphragm actuator (“fail close”). Generally coupled with a filter/regulator and a Fisher DVC 2000 or a DVC 6200 positioner that converts a 4-20 mA DC input signal to pneumatic output signal to the actuator. For high vibration applications remote mount positioners are available. Alternative positioners are available depending on unique processing conditions or upon request. Please contact Hydro-Thermal for more details.


Applications for Paper Production

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For more information on our products, click here.
For more information on our patented direct steam injection technology, click here.
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