Therm-O-Mix^® Tepid Water Delivery 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 near 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 the 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

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