Damper assembly
Damper for heating/cooling system
Damper motor control circuit for an automotive air conditioning
Dehumidification controls
Dehumidifier air conditioner apparatus with increased compressor
Developing roller apparatus for reproduction machines
Device for air-conditioning a number of rooms the heat requireme
Device for regulation of the flow of an operative medium
Device for the protection and thermal conditioning of apparatus
Device of controlling the idling speed of an engine
Digital thermostat
Directional heat transfer unit
Discharge air temperature control device having reference temper
Drum for cooling or heating a product
Drum type heat exchanger
Drying cylinders in plant for manufacturing cardboard, paper
Dual bimetal relief valve
Dual mode heat exchanger
Dual scraped surface heat exchanger
Dual scraped, thin film, heat exchanger for viscous fluid