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Class Information
Number: 236/17
Name: Automatic temperature and humidity regulation > Exchange heaters > Pressure-operated
Description: Devices controlling the supply of heating fluid to an exchange or surface heater by the pressure of the fluid heated.

Patents under this class:

Patent Number Title Of Patent Date Issued
4031950 Process fluid circulation and temperature control system Jun. 28, 1977
3981444 Method for starting a steam-heated heat exchanger by regulating the pressure of the heating-steam Sep. 21, 1976

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