The DUNGS MB-D(LE) 403 B01 MultiBloc is an integrated gas train solution engineered for modern burner systems. Combining multiple gas control components into one compact assembly, it simplifies installation, reduces piping requirements, and enhances operational safety.
The unit incorporates a microfilter, gas pressure switch, pressure regulator, and two automatic safety shut-off valves. Depending on the version selected, the MultiBloc can also include adjustable opening behavior and main flow restriction functions for improved burner performance and combustion control.
Designed for gas burner applications requiring precise pressure regulation and reliable safety shut-off, the MB-D(LE) 403 B01 is widely used in industrial burners, commercial heating systems, hot air generators, and process heating equipment.
Key Features
Compact integrated gas train solution
One-stage gas control operation
Built-in microfilter with sieve
Integrated gas pressure switch
Adjustable gas pressure regulator
Dual safety shut-off valves
Compact design reduces installation space
Reliable gas flow and pressure control
Suitable for industrial and commercial burners
Compatible with VPS 504 valve proving systems
High operational safety
Easy installation and maintenance
Applications
Industrial Gas Burners
Commercial Gas Burners
Steam Boilers
Hot Air Generators
Industrial Furnaces
Process Heating Systems
Thermal Oil Heaters
Drying Equipment
Combustion Systems
OEM Burner Manufacturing
Why Choose DUNGS MB-D(LE) 403 B01?
Combines multiple gas train components into one unit
Improves burner safety and reliability
Reduces installation time and piping complexity
Provides precise gas pressure regulation
Supports efficient burner operation
Compact and space-saving design
Trusted DUNGS gas control technology
Suitable for demanding industrial environments
Technical Description
The MB-D(LE) 403 B01 MultiBloc integrates a gas filter, pressure switch, regulator, and safety shut-off valves into a single assembly. The unit is designed for one-stage gas burner operation and supports inlet pressures up to 200 mbar.
The system includes:
V1 = Double-seat safety valve
V2 = Single-seat safety valve
Integrated microfilter
Gas pressure switch
Adjustable pressure regulator
Versions are available with adjustable opening behavior (LE), main flow restriction (D), or both functions combined (DLE).
The unit also allows installation of the DUNGS VPS 504 Valve Proving System for additional safety monitoring.
Technical Specifications
Specification | Details |
|---|---|
Brand | DUNGS |
Model | MB-D(LE) 403 B01 |
Product Type | Gas MultiBloc |
Function | One-Stage Gas Control |
Nominal Diameter | DN 10 |
Valve V1 | Double-Seat Valve |
Valve V2 | Single-Seat Valve |
Maximum Inlet Pressure | Up to 200 mbar |
Outlet Pressure Range | 4–20 mbar / 4–50 mbar |
Filter | Integrated Microfilter |
Pressure Switch | Integrated |
Pressure Regulator | Integrated |
Valve Proving System | VPS 504 Compatible |
Main Components
Component | Function |
Filter (3) | Removes contaminants from gas flow |
Pressure Switch (4) | Monitors gas pressure |
Regulator (5) | Controls outlet gas pressure |
Valve V1 | Double-seat safety shut-off valve |
Valve V2 | Single-seat safety shut-off valve |
Available Versions
Version | Description |
MB | Standard MultiBloc |
MB-D | With Main Volume Restrictor |
MB-LE | With Adjustable Opening Behaviour |
MB-DLE | Combination of D and LE Functions |