Products: DUNGS
DUNGS Combustion Controls
DUNGS is a synonym for safe and clean gas combustion
” DUNGS – the interface between gas and safety. We understand the complete range of technologies for controlling, metering and modulating of combustible gas and combustion air. We offer the complete range of hardware: From single valves to complete gas trains and from automatic burner controls to complete burner management systems. Internationally successful product families guarantee reliability, efficiency and user-friendliness that is proven around the world. “
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System Engineering Gas Trains
We manufacture and install customized GRMS in accordance with relevant EU regulations:
- EC type testing certificate as per
- EC-Gas Appliances Regulation
- EC-Pressure Equipment Directive
- Regulations on occupational safety
- EU country specific regulations
- Regulations of gas supply companies
Automatic Burner Control
Automatic burner control for one-stage and modulating gas burners
Microprocessor-controlled automatic gas burner control for intermittent and continuous operation of one-stage atmospheric burners or one-stage or modulating fanned burners. The program sequence and times can be customised by setting software parameters.
- Automatic gas burner control for one-stage burners with pilot burner or direct ignition Continuous operation
- Configurable program sequence
- Version with or without display
- Two independent flame detectors: Ionisation input Gate input
- Additional functions by extension modules
- Profibus
- Accessories Flame detector Ignition transformers Parameterisation and service box
GasMultiBloc® Combined regulator and safety shut-off valves Single-stage function MB-D(LE)
The DUNGS GasMultiBloc® integrates filter, regulator, valves and pressure switches in one compact fitting.
- Dirt trap: Fine mesh-sieve
- One regulator and two valves: B01
- Two valves are fast opening
- One valve is fast opening and one valve is slow opening
- Solenoid valves up to 360 mbar (36 kPa) as per DIN EN 161 Class A Group 2
- Sensitive setting of output pressure by proportional regulator as per DIN EN 88 Class A Group 2
- High fl ow rates with low pressure drop
- DC solenoid drive interference degree N
- Main volume restrictor at valve V2 – Hydraulic opening delay
- Flange connections with pipe threads as per ISO 7/1
- Simple mounting, compact, light weight
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 V2.
GasMultiBloc® MBE Generation E
The MBE multifunctional control combines the housing with two safety shutoff valves (ValveBody) and two electronic drives (ValveDrive) to actuate the safety valves and, optionally, to control the outlet pressure.
- 2 safety shutoff valves acc. EN 161
- Maximum inlet pressure of up to 70 kPa (700 mbar)
- Voltages: 100-240 VAC & 24 VDC • Regulator function as per EN 88-1 & EN 88-3
- 3 sensors (PS) cover the outlet pressure range of (0-50 kPa)
- High flow rate with low pressure loss
- Biogas tested to max. 1.0 vol. % H2 S
- Modular system
- Simple assembly
- Lightweight design
- Worldwide approvals
Pressure Regulators
Medium pressure regulator Type FRM Direct acting pressure regulator with adjustable setpoint springs and modular mounted safety shutoff valve (SAV)
- In compliance with EN 334 and EN 14382
- Inlet pressures up to 25 bar (2 500 kPa)
- High flow rate
- Stable, accurate and sensitive regulation of the outlet pressure
- Admission pressure compensation diaphragm for a high regulation accuracy
- External impulse
- Maintenance-friendly
- Flange connection according to DN 65 – DN 80
Pressure Regulators
The DUNGS pressure regulator, type FRS, has an adjustable setpoint spring.
The pressure regulator complies with EN 88-1 and DIN 3380:
- Input pressures up to 500 mbar (50 kPa)
- High flow rate – Sturdy, precise and sensitive regulation of regulator output pressure
- Inlet pressure compensation diaphragms
- Safety diaphragms
- Internal pulse for regulator output pressure as standard, optional external pulse connection optional on both sides
- Rp 3/8 to Rp 2 thread connection
- DN 40 to DN 150 flange connection
Pressure Switches
GW
The GW pressure switch is a compact pressure switch as per EN 1854 for DUNGS multiple actuators. The pressure switches are suitable for switching a circuit on, off or over on changes in actual pressure relative to the set switching point (reference value). The switching point can be set easily and quickly using a setting wheel provided with a scale without using a pressure gauge.
LGW
The differential pressure switch LGW is an adjustable differential pressure switch as per EN 1854 for automatic burner controls. It is suitable for switching a circuit on, off or over on changes in actual pressure value relative to the set reference value. The reference value (switching point) is adjusted on a setting wheel provided with a scale. The test nipple is integrated in metal housing as standard.
Automatic shut off and vent valves
Single-stage safety solenoid valves MVD, MVD, MVDLE
The DUNGS safety solenoid valve MVD, MVD, MVDLE is a single-stage automatic shut-off valve as per EN 161 for gas burners and gas appliance.
- Max. operating pressure up to 200, 360 or 500 mbar (20, 36 or 50 kPa)
- normally closed
- MVD: fast opening
- MVDLE: Slow opening with adjustable fast stroke for start gas volume
- Main volume adjustable (MVD/MVDLE)
- DC solenoid, rectifier wiring with radio interference suppression in terminal box with PG screw union
- Mountable closed position signal contact to monitor closed position of valve (…/5)
- Pipe thread as per ISO 7/1
- Flange connection as per DIN EN 1092-1
- Reliable function, rugged and maintenance-free
- On request, design without non-ferrous metals
Two-stage safety solenoid valves ZRLE, ZRDLE
The DUNGS safety solenoid valve ZR… is a two-stage automatic shut-off valve as per EN 161 for gas burners and gas appliances.
- Max. operating pressure up to 360 mbar (36 kPa)
- Class A, Group 2 as per EN 161
- normally closed.
- Fast closing
- Slow opening with adjustable fast stroke for start gas volume: ZRLE and ZRDLE
- Main and partial volumes adjustable: ZRDLE – DC solenoid, rectifier wiring with radio interference suppression in terminal box
- Mountable closed position signal contact to monitor closed position of valve
- Pipe thread as per ISO 7/1
- Flange connection as per DIN EN 1092-1
- Reliable function, rugged and maintenance-free
Double Solenoid Valves
The DUNGS Dual Modular Valve (DMV) combines two safety shutoff valves in one compact housing, which can be wired independently or in parallel.
Valve 1 (V1) of the DMV-D and DMVDLE series is fast opening and fast closing. Valve 2 (V2) of the DMV-D is fast opening, while V2 of the DMV-DLE is slow-opening for smoother light-off. Max. flow adjustment on V1 provides variable main flow on both models.
Internal profiles and compact design optimize flow and provide a low pressure drop.
Directly mounting the following DUNGS accessories creates a compact valve train without additional piping:
- High and low gas pressure switches
- Valve proving system
- 1″ NPT Vent line adapter
Valve Proving System
The VPS is the valve proving system for DUNGS multiple actuators. The valve proving system complies with EN 1643:
- Equipment operates independent of residual pressure in the range of the permissible operating range.
- Test volume ≤ 4 l
- Setting work not necessary on site
- Short test period: ≈ 10 s, max. 36 s
- Tightness or leaks are displayed by an LED
- External fault display possible for series 02, series 04 and S05
- Group fault alarm optional for S01 (SSM)
- Suitable for TRD systems
Electrical connection possible by plug connection S01, 02, 03. No rewiring is required for contact allocation as per DIN 4791. – S04 and S05: electrical connection at screw terminals via PG 13.5 cable entry