Datasheet Content
[{"filename":"mb-zrdle-415-420-b01_datasheet_en_225664.pdf","text":"GasMultiBloc®\n Combined regulator and\n safety shut-off valves\n Two-stage function\n\n MB-ZRD(LE) 415 - 420 B01\n\n 7.26\n\n\n\n\n Technical description The modular system permits individual\n The DUNGS GasMultiBloc® integrates filter, solutions by using external ignition gas tap\n regulator, valves and pressure switches in in connection with separately controlled\n one compact fitting. valves, by adding a valve proving system,\n mini/maxi pressure switches, pressure\n - Dirt trap: microfilter limiters, limit switch at valve V2.\n - One regulator and two main valves:\n B01 Application\n - One one-stage valve and one two-stage The modular system permits individual\n valve solutions in gas safety and regulator engi-\n - One valve is fast opening, one valve is neering. Suitable for gases of families 1, 2,\n slow or fast opening 3 and other neutral gaseous media.\n - Solenoid valves up to 360 mbar (36 kPa)\n as per DIN EN 161 Class A Group 2 Approvals\n\n\n\n\n Printed in Germany • Edition 01.21 • Nr. 225 664\n - Sensitive setting of output pressure by EU type testing certificate as per:\n proportional regulator as per DIN EN 88 • EU-Gas Appliances Regulation\n Class A Group 2 • EU-Pressure Equipment Directive\n - High flow rates with low pressure drop Approvals in other important gas consum-\n - DC solenoid drive interference degree N ing countries.\n - Main volume restrictor and partial vol-\n ume restrictor at valve V2\n - Hydraulic opening delay\n - Flange connections with pipe threads as\n per ISO 7/1\n - Simple mounting, compact, light-weight\n1…6\n\fFunctional description of gas flow\n1. When the valves V1 and V2 are closed, Sectional drawing of MB-ZRDLE...\n chamber A is under inlet pressure.\n2. A hole D in the filter housing connects\n min. pressure switch with chamber A. If\n the inlet pressure applied to the pressure\n switch exceeds the incoming reference\n value, it switches through to the automa-\n tic burner control.\n3. After release by the automatic burner\n control, valves V1 and V2 open. The gas\n flows through chambers A, B and C of\n the GasMultiBloc.\n4. On request, the second stage of valve\n V2 opens.\n\nOperating method of valve-regulator\ncombination on valve V1\nA regulator, compensating for residual\npressure is integrated in valve V1 (pressure\nregulating part). Armature 8 is not con-\nnected to valve plate unit 3. When it opens,\narmature 8 pretensions compression spring\n(V1) 5 and releases the valve plate unit.\nWhen the valve closes, the armature acts\ndirectly on the valve plate unit. The output\npressure upstream of valve V2 is defined by\npretensioning regulating spring 7 (tension\nspring) via setting screw 19.\n 1 Pressure regulator 10 Gas pressure switch Setting:\nThe output pressure acts via opening E on 2 Microfilter 11 Electrical connection 19 - Gas pressure pa\nthe working diaphragm 23 of the regula- 3 Valve V1 12 Valve V2 20 - Partial volume, 1st stage\ntor part. In regulated state, setting spring 4 Connection flange 13 Closing spring V2 21 - Main volume\ninlet pressure and pressure of working 5 Closing spring V1 14 Armature V2 (1st stage) 22 - Fast stroke\ndiaphragm are in force equilibrium. 6 Housing 15 Solenoid V2 (1st stage) 23 Working diaphragm\nThe compensating diaphragm 24 ensures 7 Regulating spring 16 Armature V2 (2nd stage) 24 Compensation\nthe fast closing function of valve V1 and a 8 Armature V1 17 Solenoid V2 (2nd stage) diaphragm\n 9 Solenoid V1 18 Electrical connection\nhigh regulating quality.\n\nOperating method of valve V2 Pressure taps\nArmature 14 of valve V2 is connected to\nvalve plate unit 11.When it opens, armature\n14 pretensions closing spring 13. The valve\nopening of stage 1 can be set by limiting the\narmature stroke by means of main volume\nrestrictor 20.\nMin. opening (residual stroke) of valve\n(0.5 to 1.0 mm)\nIf the second stage of valve 2 opens, clos-\ning spring 13 is continuously pretensioned.\nThe maximum valve opening of stage 2\ncan be set by limiting the armature stroke\nof armature 16 by means of the main vol- 0, 1, 2, 3, 4, 5\nume restrictor. Main volume restrictor 21 G 1/8 screw plug\nis set by rotating the adjusting plate or the\nhydraulic brake . The fast and/or slow open-\ning characteristic acts on both stages. It is Electrical connection\ninfluenced by setting the fast stroke at the\nhydraulic brake under the cover.\n S 20/S 50\nClosing function\nWhen the supply voltage to the solenoid\ncoils of valves V1 and V2 is interrupted, they\n 1\n\n\n\n\nare closed within < 1 s by the compression 3 2\n\n\n\n\nsprings.\n\n\n S 22/S 52\n\n 1\n\n\n\n\n 3 2\n\n\n\n\n Valves V1, V2 Valve V2\n 1st stage 2nd stage\n 2…6\n\f Specifications\n\n Nominal diameters MB-ZR…415 B01 MB-ZR…420 B01\n Flange with pipe threads as per Rp 1, 1 1/4, 1 1/2, 2\t\t\t Rp 1, 1 1/4, 1 1/2, 2\n ISO 7/1 (DIN 2999) and their combinations and their combinations\n\n Max. operating pressure 360 mbar (36 kPa)\n\n Output pressure ranges MB-ZR… S20/S22 pa: 4 mbar (0.4 kPa) to 20 mbar (2 kPa)\n MB-ZR… S50/S52 pa: 20 mbar (2 kPa) to 50 mbar (5 kPa)\n\n Media Gases of families 1, 2, 3 and other neutral gaseous media\n\n Ambient temperature -15 °C to +70 °C (Do not operate MB-ZR below 0 °C in liquid gas systems.\n Only suitable for gaseous liquid gas, liquid hydrocarbons destroy sealing ma-\n terials.)\n\n Dirt trap Sieve, microfilter, changing the filter is possible without removing the valve.\n\n Pressure switches Types GW…A5, ÜB…A2 / NB…A2 to DIN EN 1854 may be attached.\n For further information, refer to Datasheets 5.02 and 5.07 “Pressure Switches\n for DUNGS Multiple Actuators”\n\n Pressure regulator Pressure regulator compensated for residual pressure, leakproof seal when\n switched off by means of valve V1 as per DIN EN 88 Class A.\n Setpoint spring permanently installed (no spring exchange possible). A vent line\n above roof is not required. Internal pulse tap provided.\n\n Solenoid valve V1 Valve as per DIN EN 161 Class A Group 2, fast closing, fast opening\n\n Solenoid valve V2 Valve as per DIN EN 161 Class A Group 2, fast closing\n\n Valve V2 design Partial volume restrictor Main volume restrictor\n MB-ZRD fast opening with with\n MB-ZRDLE slowly opening with with\n MB-ZRLE slowly opening with without\n\n\n Measuring / Ignition gas connection For G 1/8 as per DIN ISO 228, refer on page 4\n\n Burner pressure monitor pBr Connection downstream of valve V2, pressure switch mountable on adapter laterally\n\n Voltage / Frequency 50 - 60 Hz, 220 - 230 V AC, -15 % +10 %\n\n\n Electrical connection Plug connection as per DIN EN 175301-803\n for valves and pressure switches\n\n Rating / Power consumption Refer to Dimensions on page 5\n Switch-on duration 100 %\n Degree of protection IP 54 as per IEC 529 (EN 60529)\n Radio interference Interference degree N\n\n Materials of gas conveying parts Housing\t\t\t aluminium die casting\n Diaphragms, seals\t\t NBR basis, Silopren (silicone rubber)\n Solenoid drive\t\t\t steel, brass, aluminium\n\n Installation position Solenoid vertically upright or lying horizontally as well as its intermediate posi-\n tions.\n\n Closed position signal contact Closed position signal contact, type K01/1 (DIN-tested), mountable to V2\n\n\n\n\n3…6\n\fEquipment variants\nGasMultiBloc®...B01 415 B01 420 B01\nTwo-stage function\nMB-ZRD • •\nMB-ZRDLE • •\nMB-ZRLE • •\nMicrofilter (standard) with sieve • •\nGas pressure switch…
