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Governor with solenoid valve VAD / Air/gas ratio control ... - valVario

Governor with solenoid valve VAD / Air/gas ratio control ... - valVario

Table of

Table of ContentsGovernor with solenoid valve VAD Air/gas ratiocontrol with solenoid valve VAG . . . . . . . . . . . . 1Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . 2Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Application examples . . . . . . . . . . . . . . . . . . . . . . 4Constant pressure control . . . . . . . . . . . . . . . . . . . . . . .4Constant pressure control with two solenoid valves . . .4Constant pressure control with max. pressure switch . .5Constant pressure control with non-controlled pilot gasoutlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5Modulating control with two solenoid valves . . . . . . . . .6Modulating control . . . . . . . . . . . . . . . . . . . . . . . . . . . .6High/Low control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Modulating control with two solenoid valves and inletpressure switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Governor for gas VAD . . . . . . . . . . . . . . . . . . . . . . 9Air/gas ratio control VAG . . . . . . . . . . . . . . . . . . . 10VAD, VAG connection diagram . . . . . . . . . . . . . . 11Replacement possibility for MODULINEgovernors with solenoid valve . . . . . . . . . . . . . 12Flow rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Selection example for VAD . . . . . . . . . . . . . . . . . 14Selection example for VAG . . . . . . . . . . . . . . . . . 15Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Project planning information . . . . . . . . . . . . . . 18Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Pressure switch for gas DG..C . . . . . . . . . . . . . . 20Bypass valve VAS 1 . . . . . . . . . . . . . . . . . . . . . . 20Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . 21VAD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21VAG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Maintenance cycles . . . . . . . . . . . . . . . . . . . . . 23Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24VAD, VAG · Edition 3.04 = To be continued, = End of chapter2

VADApplicationGovernor VAD and air/gas ratio controlVAG incorporating servo technologyfor shut-off and precise controlof the gas supply to gas burners andgas appliances. For use in gas controland safety systems in all sectorsof the iron, steel, glass and ceramicsindustries, also in commercial heatgeneration, such as the packaging,paper and foodstuffs industries.VAGVAD: Constant governor, ClassA, with high control accuracy, forexcess air burners, atmosphericburners or single-stage force draughtburners. Pressure preset via setpointspring.VAG: Air/gas ratio control, Class A,for maintaining a constant air/gaspressure ratio for modulating-controlledburners or with VAS 1 bypassvalve for step-by-step-controlledburners. Pressure preset by the aircontrol line.The VAG can also be used as a zerogovernor for gas engines.Easy-to-servicemeasuring connections.VAD: Gas outletpressure p GVAG: Also air controlpressure p LVAD, VAG · Edition 3.043

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