Honeywell - L91D
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Honeywell L91A B D Proportioning Pressuretrol Controllers PRODUCT DATA APPLICATION L91 Proportioning Pressuretrol Controllers are Series 90 Modulating Pressure Controllers that provide direct control of modulating motors or valves used on automatic burners or steam heating systems FEATURES Models available for pressure systems up to 300 psi 2068 kPa May be used with steam air noncombustible gases or other fluids noncorrosive to brass or phos bronze 300 psi model bellows When used with steam boilers a steam trap siphon loop is recommended Wiper on controller potentiometer moves in response to pressure changes L91D has two potentiometers for unison control of two motors L91B D models have adjustable proport ...Click here to download the manual
Contents
Honeywell L91A B D Proportioning Pressuretrol Controllers PRODUCT DATA APPLICATION L91 Proportioning Pressuretrol Controllers are Series 90 Modulating Pressure Controllers that provide direct control of modulating motors or valves used on automatic burners or steam heating systems FEATURES Models available for pressure systems up to 300 psi 2068 kPa May be used with steam air noncombustible gases or other fluids noncorrosive to brass or phos bronze 300 psi model bellows When used with steam boilers a steam trap siphon loop is recommended Wiper on controller potentiometer moves in response to pressure changes L91D has two potentiometers for unison control of two motors L91B D models have adjustable proport ...