Therm-O-Mix® Station

Operation

The Therm-O-Mix® is designed to supply tepid water delivery for one shower/eyewash combo at a time. This water heating system should be installed in close proximity to the shower and piped into a facility’s steam and cold water supply lines.

When an emergency shower or eyewash is activated, the pressure drop on a diaphragm opens the steam control valve (V-3). Water and steam flow are established instantly heating the water and condensing the steam. After exiting the heat exchanger, the hot water enters the tempering valve (V-5) and then the mixing valve (V-1) where it is blended with cold water to produce an outlet of 80°F water. The steam valve remains closed should water supply be interrupted.

Typical Applications

OSHA and ANSI require all your emergency fixtures to provide tepid water for a minimum & continuous 15-minute cycle. Tepid is defined to be between 60°F (16°C) and 100°F (38°C). The Therm-O-Mix® Tepid Water Delivery System can ensure your emergency equipment will meet these code requirements by providing 80°F water to protect personnel from scalding or freezing temperature. Since the station does not require any electric power, it is suitable for explosion-proof environments and outdoor installations.

Design Features

  • Exclusive self-actuating Thermoloid® wax blend thermal actuator
  • Plant steam and water never mix – uses a compact heat exchanger
  • Standard pressure unit available for 45-60 PSIG steam pressure
  • Low-pressure unit available for 15-30 PSIG steam pressure
  • Durable enclosure can be readily removed for service
  • Conforms to OSHA and ANSI recommendations
  • Designed to meet ASSE 1071 requirements
  • Steam trap on steam inlet included

Benefits

  • Self-operating – no external power source required
  • Uses existing plant steam and water supply
  • Provides 3 to 25 GPM of 80°F
  • Easy to retrofit on existing shower or combination face/eyewash stations
  • Maintains constant 80°F output regardless of inlet water temperature
    (between 40°F and 80°F)
  • No insulated tanks or expensive recirculation systems required
  • Self-purging-no need for elaborate drainage system
  • Union connections allow quick and easy installation

Ordering

PART NUMBER

DESCRIPTION

387-112100-003

THERM-O-MIX® STATION, BPHE
(45-60 PSIG STEAM)

387-512100-003

THERM-O-MIX® STATION LSP, BPHE
(15-30 PSIG STEAM)

Specifications

MAXIMUM

MINIMUM

Outlet Flow Rate

25 GPM

95 LPM

3 GPM

11 LPM

Ambient Operating Temperature

120°F

49°C

-30°F

-34°C

Inlet Water Pressure

90 PSIG

6 BAR

55 PSIG

4 BAR

Inlet Water Temperature

80°F

27°C

40°F

4°C

Inlet Saturated Steam Pressure

60 PSIG

4 BAR

45 PSIG

3 BAR

Inlet Saturated Steam Pressure

(Low Pressure)

30 PSIG

2 BAR

15 PSIG

1 BAR

Maximum Steam Temperature

350°F

177°C

Cold Water Bypass Flow Rate

24 GPM @ 25 PSI Pressure Drop

Water Inlet & Outlet Pipe Size

1 1/4” NPT (F)

Steam Supply & Drain Pipe Size

1” NPT (F)

Steam Consumption

600 lb./hr @ 25 GPM Flow Rate, 20 lb./hr @ Idle

Condensate Discharge Rate

12 GPH maximum

Pressure Drop Water Inlet

25 PSI @ 25 GPM

Resources