Datasheet Content
[{"filename":"mb-dle-415-420-b01_datasheet_en_225758.pdf","text":"GasMultiBloc®\n Combined regulator and\n safety shut-off valves\n Single-stage function\n\n MB-D(LE) 415 - 420 B01\n\n 7.23\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 valves: B01\n - Two valves are fast opening Application\n - One valve is fast opening and one valve The modular system permits individual\n is slow opening solutions in gas safety and regulator engi-\n - Solenoid valves up to 360 mbar (36 kPa) neering. Suitable for gases of families 1, 2,\n as per DIN EN 161 Class A Group 2 3 and other neutral gaseous media.\n - Sensitive setting of output pressure by\n proportional regulator as per DIN EN 88 Approvals\n\n\n\n\n Printed in Germany • Edition 03.19 • Nr. 225 758\n Class A Group 2 EU type testing certificate as per:\n - High flow rates with low pressure drop • EU-Gas Appliances Regulation\n - DC solenoid drive interference degree N • EU-Pressure Equipment Directive\n - Main volume restrictor at valve V2 Approvals in other important gas consum-\n - Hydraulic opening delay ing countries.\n - Flange connections with pipe threads as\n per ISO 7/1\n - Simple mounting, compact, light-weight\n\n\n\n1…6\n\fFunctional description of gas flow\n Sectional drawing of MB-DLE...\n1. When the valves V1 and V2 are\n closed, chamber A is under inlet\n pressure.\n2. A hole D in the filter housing con-\n nects min. pressure switch with\n chamber A. If the inlet pressure ap-\n plied to the pressure switch exceeds\n the incoming reference value, it\n switches through to the automatic\n burner control.\n3. After release by the automatic burn-\n er control, valves V1 and V2 open.\n The gas flows through chambers A,\n B and C of the GasMultiBloc.\n\nOperating method of valve-regulator\ncombination on valve V1\nA regulator, compensating for residual\npressure is integrated in valve V1 (pres-\nsure regulating part). Armature 7 is\nnot connected with valve plate unit 3.\nWhen it opens, armature 8 pretensions\ncompression spring (V1) 5 and releases\nthe valve plate unit.\nWhen the valve closes, the armature\nacts directly on the valve plate unit. 1 Pressure regulator 9 Solenoid V1 Setting:\nThe output pressure upstream of valve 2 Microfilter 10 Gas pressure switch 17 - Gas pressure pa\nV2 is defined by pretensioning regulat- 3 Valve V1 11 Electrical connection 18 - Main volume\n 4 Connection flange 12 Valve V2 19 - Fast stroke\ning spring 8 (tension spring) via setting\n 5 Closing spring V1 13 Closing spring V2 20 Hydraulic brake\nscrew 17. 6 Housing 14 Armature V2 21 Working diaphragm\nThe output pressure acts via open- 7 Armature V1 15 Solenoid V2 22 Compensation\ning E on the working diaphragm 21 of 8 Regulating spring 16 Solenoid housing diaphragm\nthe regulator part. In regulated state,\nsetting spring inlet pressure and pres- Pressure taps\nsure of working diaphragm are in force 3\n 02\n p pa\n 4\nequilibrium. e\n pBr\nThe compensating diaphragm 22 en-\nsures the fast closing function of valve 1 5\nV1 and a high regulating quality.\n\n 2 3 4\n pe pa pBr\nOperating method of valve V2\nThe armature 14 of valve V2 is con-\nnected to valve plate unit 12. When it\nopens, armature 14 pretensions the\nclosing spring 13.The max. valve open-\ning can be set by limiting the armature 0, 1, 2, 3, 4, 5\nstroke by means of the main volume screw plug G 1/8\nrestrictor 18.\nMin. opening (residual stroke) of Electrical connection\nvalve (0.5 to 1.0 mm)\nThe main volume restrictor 18 is set\n S 20/S 50\nby rotating the adjusting plate or the\nhydraulic brake 20.The fast and/or slow\nopening characteristic is influenced by\nsetting fast stroke 19 at the hydraulic\nbrake under the cover.\n\nClosing function\nWhen the supply voltage to the solenoid S 22/S 52\ncoils of valves V1 and V2 is interrupted,\nthey are closed within < 1 s by the\ncompression springs.\n 1\n\n\n\n\n 3 2\n\n\n\n\n 2…6\n\f Specifications\n\n Nominal diameters MB-D… 415 B01 MB-D… 420 B01\n Flange with pipe threads as per Rp 1, 1 1/4,1 1/2, 2 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-… S20/S22 pa: 4 mbar (0.4 kPa) to 20 mbar (2 kPa)\n MB-… 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-D 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\n\n Valve V2 design\t\t Main volume restrictor\n MB fast closing fast opening without\n MB-D fast closing fast opening with\n MB-DLE fast closing slowly opening with\n MB-LE fast closing slowly opening without\n\n Measuring / Ignition gas connection For G 1/8 as per DIN ISO 228, refer to Pressure taps on page 2\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 at 230 V AC; +20 °C: 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 on V2\n\n\n\n\n3…6\n\fEquipment variants\nGasMultiBloc®...B01 415 B01 420 B01\nSingle-stage function\nMB • •\nMB-D • •\nMB-DLE • •\nMB-LE • •\nMicrofilter • • Filter element can be removed. A suitable GF.../1\nGas pressure switch gas…
