DUNGS MB-D(LE) 403 B01, One-stage mode

[{"filename":"mb-dle-403-053-b01_datasheet_en_214765.pdf","text":"GasMultiBloc\n Combined regulator and\n safety shut-off valves\n Single-stage function\n\n MB-D(LE) 403 B01\n\n 7.20\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 limit-\n - Dirt trap: microfilter ers, partial volume setting by closing stroke\n - One regulator and two main valves: limiter at valve V2 and regulator blocking for\n B01 liquid gas applications.\n - Two valves are fast opening\n - One valve is fast opening, one valve is Application\n slow opening The modular system permits individual\n - Solenoid valves up to 200 mbar (20 kPa) solutions in gas safety and regulator engi-\n as per DIN EN 161 Class A Group 2 neering. Suitable for gases of families 1, 2,\n - Sensitive setting of output pressure by 3 and other neutral gaseous media.\n\n\n\n\n Printed in Germany • Edition 01.18 • Nr. 214 765\n proportional regulator as per DIN EN 88\n Class A Group 2 Approvals\n - High flow rates with low pressure drop EC type testing certificate as per:\n - DC solenoid drive interference degree N • EC-Gas Appliances Regulation\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-\n weight\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 16 17 18 19\n pressure.\n2. A hole D in the filter housing con-\n nects min. pressure switch with\n chamber A. If the inlet pressure\n applied to the pressure switch ex-\n ceeds the incoming reference value,\n it switches through to the automatic\n burner control.\n3. After release by the automatic bur-\n ner control, valves V1 and V2 open.\n The gas flows through chambers A, 10\n B and C of the GasMultiBloc. 9\n 15\n 14\n 8\nOperating method of valve-regulator 7\n 13\ncombination on valve V1 12\n 6\nA regulator, compensating for residual 11\n 5\npressure is integrated in valve V1 (pres-\n 4\nsure regulating part). Armature 7 is not\n V1 V2\nconnected to valve plate unit 3. When 3\n p1 p2\nit opens, armature 7 pretensions com- 2 A B\n\npression spring (V1) 5 and releases 1 C\nthe valve plate unit. When the valve E\n\ncloses, the armature acts directly on\nthe valve plate unit. The output pres-\nsure upstream of valve V2 is defined\nby pretensioning regulating spring 8\n(tension spring) via setting screw 16. 1 Pressure regulator 8 Regulating spring 15 Solenoid housing\nThe output pressure acts via opening E 2 Microfilter 9 Solenoid V1 Setting:\non the working diaphragm of regulator 3 Valve V1 10 Electrical connection 16 - Gas pressure pa\npart 1. In regulated state, setting spring 4 Connection flange 11 Valve V2 17 - Main volume\n 5 Closing spring V1 12 Closing spring V2 18 - Fast stroke\ninlet pressure and pressure of working 6 Housing 13 Armature V2 19 Hydraulic brake\ndiaphragm are in force equilibrium. 7 Armature V1 14 Solenoid V2\n\nOperating method of valve V2\nArmature 13 of valve V2 is connected to Pressure taps\nvalve plate unit 11. When it opens, arma- 2 3\nture 13 pretensions closing spring 12.The pe pa\nmaximum valve opening can be set by\nlimiting the armature stroke by means of 1\n 4\n 1 4\nthe main volume restrictor 17.\nMin. opening (residual stroke) of\nvalve (0.5 to 1.0 mm) 2 3\n pe pa\nMain volume restrictor 17 is set by rotat-\n 1,3,4 G 1/8\n P1 screw plug\ning the adjusting plate or the hydraulic Mp 1 3 2 2 3 1\n 2\t\t TestL1nipple, optional\n N\nbrake 19. The fast and/or slow opening P1\n L1\n Mp\n N\ncharacteristic is influenced by setting\nthe fast stroke 18 at the hydraulic brake Electrical connection\n19 under the cover.\n P1 Mp\n L1 N\nClosing function S 20/S 50\n MP\n N\n\nWhen the supply voltage to the solenoid\ncoils of valves V1 and V2 is interrupted,\n 1\n\n\n\nthey are closed within < 1 s by the 2\n\ncompression springs. P1 Mp P2\n L1 N P1 L2\n L1\nClosing stroke limitation (option) P1 Mp P2\nA partial volume setting is possible by S 22/S 52 MP\n L1 N L2\n\nmeans of a closing stroke limiter. Valve N\n\n\nV2 becomes a regulating actuator 1\n\n\nwithout zero shutoff. Partial volume and P2\n L2\n P1 Mp P2\n L1 N L2\nmain volume are adjustable. 3 2\n\n\n\n P1\n L1\n\n 2…6\n\f Specifications\n\n Nominal diameters MB-…403 B01\n Flange with pipe threads as per Rp 3/8, 1/2\n ISO 7/1 (DIN 2999) and their combinations\n\n Max. operating pressure MB-…403 pmax.= 200…