GasMultiBloc Combined regulator and safety shut-off valves Single-stage function MB-D(LE) 0 - B0 7. Printed in Germany Edition 0.0 r. 7 Technical description The DUGS GasMultiBloc integrates filter, regulator, valves and pressure switches in one compact fitting. - Dirt trap: microfilter - One regulator and two valves: B0 - Two valves are fast opening - One valve is fast opening and one valve is slow opening - Solenoid valves up to 0 mbar ( kpa) as per DI E Class A Group - Sensitive setting of output pressure by proportional regulator as per DI E 88 Class A Group - High flow rates with low pressure drop - DC solenoid drive interference degree - Main volume restrictor at valve V - Hydraulic opening delay - Flange connections with pipe threads as per ISO 7/ - Simple mounting, compact, lightweight The modular system permits individual solutions by using external ignition gas tap in connection with separately controlled valves, by adding a valve proving system, mini/maxi pressure switches, pressure limiters, limit switch V. Application The modular system permits individual solutions in gas safety and regulator engineering. Suitable for gases of families,, and other neutral gaseous media. Approvals EC type test approval as per EC Gas Appliance Directive: MB...0- B0 CE-008 AP EC type test approval as per EC Pressure Equipment Directive: MB...0- B0 CE00 Approvals in other important gas consuming countries.
Functional description of gas flow When the valves V and V are closed, chamber A is under inlet pressure. A hole D in the filter housing connects min. pressure switch with chamber A. If the inlet pressure applied to the pressure switch exceeds the incoming reference value, it switches through to the automatic burner control. After release by the automatic burner control, valves V and V open. The gas flow through chambers A, B and C of the GasMultiBloc. Operating method of valve-regulator combination on valve V A regulator, compensating for residual pressure is integrated in valve V (pressure regulating part). Armature 7 is not connected to valve plate unit. When it opens, armature 8 pretensions compression spring (V) and releases the valve plate unit. When the valve closes, the armature acts P directly P on the valve plate unit. L L The output pressure upstream of valve V is defined by pretensioning regulator spring 8 (tension spring) via setting screw 7. The output pressure acts via opening E on the working diaphragm of the regulator part. In regulated state, setting spring inlet pressure and pressure of working diaphragm are in force equilibrium. The compensating diaphragm ensures the fast closing function of valve V and a high regulating quality. Operating method of valve V Armature of valve V is connected to valve plate unit. When it opens, armature pretensions compression spring. The max. valve opening can be set by limiting the armature stroke by means of the main volume restrictor 8. Min. opening (residual stroke) of valve (0. to.0 mm) Main volume restrictor 8 is set by rotating the adjusting plate or the hydraulic brake. The fast and/or slow opening characteristic is influenced by setting fast stroke 9 at the hydraulic brake under the cover. Closing function When the supply voltage to the solenoid coils of valves V and V is interrupted, they are closed within < s by the compression springs. Sectional drawing of MB-DLE... Pressure regulator L Microfilter Valve V Connection flange Closing spring V Housing 7 Armature V 8 Regulating spring Pressure taps 0 0 9 8 7 0 Filter couver,,, G /8 screw plug Test nipple M screwed sealing plug Electrical connection S /S P p e D 9 0 7 8 V p p A B C E V 9 Solenoid V 0 Gas pressure switch Electrical connection Valve V Closing spring V Armature V Solenoid V Solenoid housing p a 0 pe pa pbr P L Setting: 7 - Gas pressure p a 8 - Main volume 9 - Fast stroke 0 Hydraulic brake Working diaphragm Compensation diaphragm P L S 0/S 0 P L MP P L p Br P L 0 P L MP P L P L
Specifications ominal diameters Flange with pipe threads as per ISO 7/ (DI 999) Max. operating pressure MB- 0/07 B0 Rp /, / and their combinations 0 mbar ( kpa) MB- 0/ B0 Rp /,, / and their combinations Output pressure ranges Media Ambient temperature Dirt trap MB- S0/S p a : mbar (0. kpa) to 0 mbar ( kpa) MB- S0/S p a : mbar (0. kpa) to 0 mbar ( kpa) Gases of families,, and other neutral gaseous media - C to +70 C (Do not operate MB-D below 0 C in liquid gas systems. Only suitable for gaseous liquid gas, liquid hydrocarbons destroy sealing materials.) Sieve, microfilter, changing the filter is possible without removing the valve. Pressure switches Pressure regulator Solenoid valve V Solenoid valve V Measuring/ignition gas connection Burner pressure monitor p Br Voltage / frequency Electrical connection Types GW A, GW A, B A, ÜB A mountable as per DI E 8. For further information, refer to Datasheet GW A o. 8 and Datasheet GW A o. 90. Pressure regulator compensated for residual pressure, leakproof seal when switched off by means of valve V as per DI E 88 Class A. Setpoint spring permanently installed (no spring exchange possible). A vent line above roof is not required. Internal pulse tap provided. Valve as per DI E Class A Group, fast closing, fast opening Valve as per DI E Class A Group Valve V design Main volume restrictor MB fast closing fast opening without MB-D fast closing fast opening with MB-DLE fast closing slow opening with MB-LE fast closing slow opening without For G /8 as per DI ISO 8, refer to Pressure taps on page Connection downstream of valve V, pressure switch A mountable on adapter laterally 0-0 Hz 0-0 V AC - % + 0% Other preferred voltages: 0 VAC, 0-0 VAC, 8 VDC, -8 VDC Plug connection as per DI E 70- for valves and pressure switches Rating/power consumption Switch-on duration Degree of protection Radio interference Refer to Dimensions on page 00% IP as per IEC 9 (E 09) Interference degree Materials of gas-conveying parts Housing Diaphragms, seals Solenoid drive aluminium die casting BR basis, Silopren (silicone rubber) steel, brass, aluminium Installation position Closed position signal contact Solenoid vertically upright or lying horizontally as well as its intermediate positions Closed position signal contact, type K0/ (DI-tested), mountable on V
Equipment variants GasMultiBloc...B0 Single-stage function MB MB-D MB-DLE MB-LE Microfilter with sieve Gas pressure switch downstream of filter downstream of valve V on adapter laterally downstream of valve V on flange with adapter Pressure regulator Valve V, double seat Valve V, single seat Valve V, double seat Valves controlled together Valves controlled separately Flange Rp / Rp / Rp Rp / MB-...B0 version V = Valve V = Valve = Dirt trap = Pressure switch = Regulator 0 B0 07 B0 Mounting of VPS 0 valve proving system possible Mounting of K0/ closed position signal contact possible Type key of MultiBloc 0 = common = separated 0 B0 = - 0 mbar up to 0 mbar = - 0 mbar up to 0 mbar B0 V V = two A valves for main gas + regulator 7 = two A valves for main gas, one A valve together with V as internal bypass around V + regulator 0 = D 0, V = Single-seat valve 0 = D, V = Single-seat valve 07 = D 0, V = Double-seat valve 0 = D, V = Single-seat valve = D, V = Double-seat valve = D 0, V = Double-seat valve 0 = D 0, V = Double-seat valve without = (MB or MB-ZR) -D = Main volume restrictor -LE = adjustable opening behaviour -DLE = D + LE combination without = single stage ZR = double-stage with partial volume setting first stage S 0, S 0 S, S = possible () = on request - = not possible
Dimensions [mm] k l d = Space requirement for cover of pressure switch k = Space requirement for exchanging the solenoid l = Space requirement for K0/ closed position signal contact Type MB-D 0/07 B0 MB-DLE 0/07 B0 MB-D 0/ B0 MB-DLE 0/ B0 Rp Rating / power consumption MB 0/07 S 0 MB 0/07 S 0 MB 0/07 S MB 0/07 S e Rp / Rp / Rp Rp / Opening time < s < 0 s < s < 0 s [VA] ~(AC) 0 V AC; +0 C: h a d b c Dimensions [mm] d e f g h i 0 0. 0 0 0 00 0 8 0 0. 0 0 0 0. 8 0 0 0. 8 0 0 0 0 0 8 a b c j g i k f l Weight [kg]./../../../.7 MB 0/ S 0 MB 0/ S 0 MB 0/ S MB 0/ S 9 9
GasMultiBloc Combined regulator and safety shut-off valves Single-stage function MB-D(LE) 0 - B0 Volumetric flow pressure loss characteristics in regulated state with microfilter p [mbar] 0 00 00 0 00 0 0 0 0 0 0 8 V min. MB-D(LE) 0 / 07 V min. MB-D(LE) 0 / MB-D(LE) 0 Rp / - Rp / Recommended operating range MB-D(LE) 0 Rp - Rp MB-D(LE) 07 Rp / - Rp / Basis + C, 0 mbar, trocken Based on + C, 0 mbar, dry Base + C, 0 mbar, sec Base + C, 0 mbar, secco 0, 0, 0, 0, 0,0, 0,8 7 8 90 0 0 0 0 00 00 Vn [m /h] Luft / Air / Aria dv =,00 MB-0 S0, S MB-0 S0, S MB-D(LE) Rp / - Rp / MB-07 S0, S MB-0 S0, S MB-07 S0, S MB-0 S0, S p = mbar Br MB- S0, S MB- S0, S 0, 0, 0, 0,0, 0,8 7 890 0 0 0 0 00 00 Vn [m /h] Erdgas/atural gas/gaz aturel/gas metano dv = 0, f = Dichte Luft Spec. weight air poids spécifique de l'air peso specifico aria Dichte des verwendeten Gases Spec. weight of gas used poids spécifique du gaz utilisé peso specifico del gas utilizzato Gas type at. gas City gas LPG Air Spec. Wgt. [kg/m ] 0.8 0.8.08. dv 0. 0.7.7.00 f.. 0.77.00 V verwendetes Gas/gas used/ gaz utilisé/gas utilizzato = V Luft/air/air/aria x f We reserve the right to make any changes in the interest of technical progress. Head Offices and Factory Karl Dungs GmbH & Co. KG Siemensstraße -0 D-70 Urbach, Germany Telephone +9 (0)78--0 Fax +9 (0)78-- Postal address Karl Dungs GmbH & Co. KG Postfach 9 D-70 Schorndorf, Germany e-mail info@dungs.com Internet www.dungs.com