EXTON DI water heaters® are specifically designed for the point-of-use heating of ultrapure water for critical cleaning and rinsing operations now required in many high tech manufacturing processes. The heaters are capable of providing a continuous supply of heated deionized water, within close limits of temperature control, at individualized production stations.

The heaters feature a flow switch to control the switching on of the heating modules at predetermined flow rates. This allows a continuous unheated flow through the system during non-use periods, maintaining high resistivity and avoiding "dead legs" in piping systems. When the point-of-use DI hot water is required, the switch activates the heating modules to provide an instant and continuous supply of heated, high purity deionized water, up to a maximum of 180°F.

For optimum performance and energy savings, EXTON DI water heaters® should be located as near the point of use as possible. Since the per unit investment is low, it allows installation at multiple locations, or multiple units plumbed in parallel where higher flow rates are specified.

The outgoing temperature can be controlled by adjusting the rate of flow in most cases. Where more accurate temperature control is required, the units can be fitted with an electronic thermostat utilizing solid state zero-voltage switching techniques to control the heating module power.

EXTON DI water heaters® are compact. The outer cases are either flame retardant (UL94VQ) plastic or epoxy coated steel, making them suitable for "class 1" clean room installation. The heaters are UL listed.

EXTON DI water heaters® are manufactured from PVDF and GE Noryl© plastic that maintain the integrity of ultra high purity water.

The single phase heater is just 10-1/4 x 5-1/4" x 2-7/8"
The three phase is only 12" x 18" x 4"

EXTON Quality Features
  • On demand hot water - no delay
  • Continuous hot water - no storage capacity to run out
  • Thermostatic feature available insures accurate outlet temperature, adjustable up to 180°F (82°C)
  • Cut energy waste - flow switch activates heater only on demand (no standby heat loss)
  • Designed for durability - constructed of high strength Noryl© reinforced plastic
  • Factory set temperature available
  • Space saving installation - mounts nearly anywhere
  • Warranty - full factory warranty - heaters are guaranteed against failure due to leaks of "Heater Body/Element Assembly" for a period of one year
  • Capable of heating High Purity Water - state of the art materials used in construction, tested for purity levels up to 18.3 Meg Ohms
  • Test proven by independent analytical laboratory to maintain water purity. Test results available upon request
  • Extensive power range: 4kW, 208V single phase through 32kW, 277V three phase
  • Compact sizes: three phase unit is only 12" x 12" x 3-5/8", single phase 10-1/4 x 5-1/4" x 2-1/8"
  • Thermostatic temperature control available - highly accurate thermostatic feature will deliver ± 1°F (1/2°C) outlet accuracy at continuous flows
  • Eliminate deadlegs - unique flow activated design allows for constant water movement, even when not heating
  • Easy installation - compact size, allows for installations close to the points-of-use
  • Non-particle shedding electronic controls allow installations in clean rooms

EXTON Applications
Heats Ultrapure Water for:

  • Microchip manufacturing
  • Pharmaceutical production
  • Critical tolerance component cleaning
  • Ultrasonic cleaning
  • Spray rinse tanks
  • Batch chemical mixing

Heater Model and Specification Data.

Selecting the correct heater(s) for your application(s)

Noryl© is a registered trademark of General Electric Plastics

EXTON INDUSTRIES, L.C. • Ph: (434) 978-4335 • Fax: (434) 978-4935 • E-mail: mail@extonindustries.com