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

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

∆p

∆p [mbar]50040030020010080605040302010853VAD, VAG 115..BVAD, VAG 125..AVAD, VAG 240..AP3P2VAD, VAG 350..AP1Selection example for VADNatural gasInlet pressure p e = 100 mbarOutlet pressure p G = 40 mbarFlow rate V . max = 50 m 3 /hThe selected control ratio fromhigh-fire to low-fire rate is Rv = 5:1High fireΔp = p e - p G = 60 mbar Point P1Select: VAD 125..ALow fireV . G min = V. G max = 10 mRv3 /hΔp = p e - p G = 60 mbar Point P2Select: VAD 125..A12320,3 0,4 0,6 1 2 3 4 5 8 10 20 30 40 60 100 2000,2 0,3 0,5 0,8 1 2 3 4 5 8 10 20 30 40 60 1000,30,5 0,8 1 2 3 4 5 8 10 20 30 40Flow rateThe characteristic flow rate curveshave been measured with the specifiedflanges and a fitted strainer. Iftwo or more valves are combinedthe pressure loss per individual valvedrops by approx. 5%. = Natural gas = LPG = Air60 100200V' [m 3 /h (n)]Point P1 and point P2 must bewithin the working range of a unitsize. We recommend that you selectthe smallest size to achieve the bestcontrol properties. VAD, VAG · Edition 3.0414

∆p [mbar]1235004003002001008060504030201085320,3 0,4 0,6 1 2 3 4 5 8 10 20 30 40 60 100 2000,2 0,3 0,5 0,8 1 2 3 4 5 8 10 20 30 40 60 1000,3VAD, VAG 115..BVAD, VAG 125..AVAD, VAG 240..AP3P2VAD, VAG 350..AP10,5 0,8 1 2 3 4 5 8 10 20 30 4060 100200V' [m 3 /h (n)]Selection example for VAGNatural gasInlet pressure p e = 100 mbarOutlet pressure p G max = 40 mbarFlow rate V . max = 50 m 3 /hThe selected control ratio fromhigh-fire to low-fire rate is Rv = 5:1High fireΔp = p e - p G max = 60 mbar Point P1Select: VAG 125..ALow firep G min = p G maxRv 2 = 1.6 mbarV . G min = V. G max = 10 mRv3 /hΔp = p e - p G min = 98.4 mbar Point P3Select: VAG 125..APoint P1 and point P3 must bewithin the working range of a unitsize. We recommend that you selectthe smallest size to achieve the bestcontrol properties. VAD, VAG · Edition 3.0415

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