GasMultiBloc Combined regulator and safety shut-off valves Two-stage function Integrated bypass valve MB-ZRD(LE) 7 - B07 7.5 Edition 0.8 r. 5 96 6 Technical description The DUGS GasMultiBloc integrates filter, regulator, valves and pressure switches in one compact fitting. - Dirt trap: Fine-mesh sieve - One regulator, two main valves and one bypass valve: B07 - Two single-stage valves, one two-stage valve - Two valves are fast opening, one valve is slow opening - Solenoid valves up to 60 mbar (6 kpa) as per DI E 6 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, bypass restrictor at valve V - Hydraulic opening delay - Flange connections with pipe threads as per ISO 7/ - Simple mounting - Compact, light-weight The modular system permits individual solutions by using an internal bypass valve in connection with separately controlled valves, by adding a valve proving system, mini/maxi pressure switches, pressure limiters, limit switches at valve 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 testing certificate as per: EC-Gas Appliances Regulation EC-Pressure Equipment Directive Approvals in other important gas consuming countries.
Specifications ominal diameters Flange with pipe threads as per ISO 7/ (DI 999) Max. operating pressure MB- 7 B07 Rp /, / and their combinations 60 mbar (6 kpa) MB- 0/ B07 Rp /,, / and their combinations Output pressure ranges Media Ambient temperature Dirt trap Pressure switches Pressure regulator Solenoid valve V Solenoid valve V Solenoid valve V (bypass) Measuring/ignition gas connection Burner pressure monitor p Br Voltage / Frequency Electrical connection Rating/power consumption Switch-on duration Degree of protection Radio interference MB- S p a : mbar (0. kpa) to 0 mbar ( kpa) MB- S5 p a : mbar (0. kpa) to 50 mbar (5 kpa) Gases of families,, and other neutral gaseous media. -5 C to + C (Do not operate MB-D below 0 C in liquid gas systems. Only suitable for gaseous liquid gas, liquid hydrocarbons destroy sealing materials.) Fine-mesh sieve. Replacement only possible by dismounting the fitting. Types GW A5, GW A, B A, ÜB A mountable as per DI E 85. For further information, refer to Datasheet GW A o. 5 8 and Datasheet GW A5 o. 5 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 6 Class A Group, fast closing, fast opening Valve as per DI E 6 Class A Group, fast closing Valve V design Main volume restrictor Partial volume restrictor MB-ZR fast opening with without MB-ZRD fast opening with with MB-ZRDLE slow opening with with MB-ZRLE slow opening with without Valve as per DI E 6 Class A Group, with volume restrictor For G /8 as per DI ISO 8, refer to Pressure taps on page Connection downstream of valve V, pressure switch mountable on adapter laterally 50-60 Hz 0-0 V AC, -5 % +0 % Other preferred voltages: VAC, 0-0 VAC, 8 VDC, -8 VDC Plug connection as per DI E 750-80 for valves and pressure switches Refer on page 00 % IP 5 as per IEC 59 (E 6059) 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 to V 6
Equipment variants GasMultiBloc...B07 Two-stage function MB-ZR MB-ZRD MB-ZRDLE MB-ZRLE Microfilter (standard) with sieve Gas pressure switch downstream of filter downstream of valve V on adapter Pressure regulator Valve V, double seat Valve V, single seat Valve V, double seat Valve V, single seat with restrictor Valve opening separately Flange Rp / Rp / Rp Rp / 7 B07 0 B07 B07 S... version = possible () = on request = not possible MB-...B07 version V = Valve V = Valve V = Valve = Filter 5 = Pressure switch, optional 6 = Regulator Mounting of VPS 50 valve proving system possible Mounting of K0/ closed position signal contact possible Type key of MultiBloc 0 = common = separated = - 0 mbar up to 60 mbar 5 = - 50 mbar up to 60 mbar = 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 = D 0, V = Single-seat valve 5 = D 5, V = Single-seat valve 7 = D 0, V = Double-seat valve 0 = D 5, V = Single-seat valve = D, V = Double-seat valve 5 = D, V = Double-seat valve 0 = D 50, 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 6
Dimensions [mm] e f h c d c = Space requirement for cover of pressure switch f = Space requirement for exchanging the solenoid g a b Typ ominal rating [VA] ~(AC) 0 V; +0 C Dimensions [mm] Weight [kg] S S5 a b c d e f g h MB-ZRD 7 B07 MB-ZRDLE 7 B07 MB-ZRD 0 B / B07 MB-ZRDLE 0 B / B07 0 0 5 5 85 85 6 6 55 55 80 0 0 60 50 50 00 00 0 0 0 0 5 5 5 5,5,6 6,8 6,9 Electrical connection P L Mp P L S /S 5 Mp L P P L MP. Stufe V nd stage V ème allure V II stadio V Mp L P P L Pressure taps p e p a V 5 5 5 V V p a,, 5 G /8 screw plug Test nipple Bypass throttle 6
Volumetric flow pressure loss characteristic via bypass valve V, restrictor open 00 80 60 50 0 p [mbar] 0 0 8 6 5 MB-ZRD(LE) 7 Bypass V MB-ZRD(LE) 0 / Bypass V Basis + 5 C, 0 mbar, trocken Based on + 5 C, 0 mbar, dry Base + 5 C, 0 mbar, sec Base + 5 C, 0 mbar, secco 0, 0, 0, 0, 0,50,6 0,8 5 6 7 8 90 Vn [m /h] Luft / Air / Aria dv =,00 0, 0, 0, 0,50,6 0,8 5 6 7 8 90 Vn [m /h] Erdgas/atural gas/gaz aturel/gas metano dv = 0,65 Volumetric flow pressure loss characteristics in regulated state with Fine-mesh sieve MB-7 S0, S MB-0 S0, S MB-7 S50, S5 MB-0 S50, S5 MB- S0, S MB- S50, S5 60 00 p = mbar Br 00 50 00 80 Recommended operating range 60 50 0 p [mbar] 0 0 8 6 5 V min. MB-ZRD(LE) 7 V min. MB-ZRD(LE) 0 / 0, 0, 0, 0, 0,50,6 0,8 MB-ZRD(LE) 7 Rp / - Rp / MB-ZRD(LE) 0 Rp - Rp MB-ZRD(LE) Rp 5/ - Rp 5/ Basis + 5 C, 0 mbar, trocken Based on + 5 C, 0 mbar, dry Base + 5 C, 0 mbar, sec Base + 5 C, 0 mbar, secco 5 6 7 8 90 0 0 60 80 00 00 Vn [m /h] Luft / Air / Aria dv =,00 f..6 0.77.00 0, 0, 0, 0,50,6 0,8 5 6 7 8 90 0 0 60 80 00 00 Vn [m /h] Erdgas/atural gas/gaz aturel/gas metano dv = 0,65 V Luft/air/air/aria x f 5 6 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 Density [kg/m ] 0.8 0.58.08. V verwendetes Gas/gas used/ gaz utilisé/gas utilizzato = dv 0.65 0.7.67.00
GasMultiBloc Combined regulator and safety shut-off valves Two-stage function Integrated bypass valve MB-ZRD(LE) 7 - B07 We reserve the right to make any changes in the interest of technical progress. Head Offices and Factory Karl Dungs GmbH & Co. KG Karl-Dungs-Platz D-7660 Urbach, Germany Telephone +9 (0)78-80-0 Fax +9 (0)78-80-66 Postal address Karl Dungs GmbH & Co. KG Postfach 9 D-760 Schorndorf, Germany e-mail info@dungs.com Internet www.dungs.com 6 6