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Stationary filters

MDB-2 High Vacuum

On torch extraction is an efficient way to capture welding fumes at source. The MDB-2/HV is a heavy-duty welding torch extraction system.

  • Central filter system for up to 10 fume extraction torches.
  • RamAirTM pulse amplifier for efficient cleaning and long filter life.
  • Low sound level of only 68dB

The MDB-2 HV is a powerful welding fume extraction unit for multiple welding torches

The MDB-2 High Vacuum with ControlPro is a central high vacuum filter system with integrated blower for connection to 6-10* extraction torches. This system is excellent performing, highly effective and self-cleaning.

This central filter system is recommended for heavy manual welding and long welding runs. Automatic filter cleaning removes the captured dust from the filter medium and drops it into the dustbin. This large dustbin has a connection lift ensuring no leakage of the hazardous dust and easy emptying.

The extraction capacity of the powerful 14,5 kW blower fan can manually be adjusted to need. The unit is standardly fitted with a Variable Frequency Controller to make this possible. 

Recommended for

  • On torch / on tool extraction
  • 6 to 10 welding torches
  • Heavy manual welding
  • Long manual welding runs

Filter control via intuitive touch screen

The MDB-2 High Vacuum with ControlPro is controlled by a ControlPro, featuring a HMI with intuitive touch screen. This makes operation of the unit very easy and provides insight in the filter system and e.g. initiate the cleaning cycle or simple adjustment of the weekly timer for auto start/stop. The ControlPro also signals when the filter cartridges reach the end of their lifespan.

MDB-2 High Vacuum with ControlPro Connect

The MDB-2 High Vacuum with ControlPro Connect is an extension of the ControlPro control panel. If your filters are steered by ControlPro control systems, Plymovent gives the option to extend it with ControlPro Connect. This is an advanced web portal that gives you the power to monitor, manage and control any number of filters at a glance from your PC, tablet or smartphone.

Low sound level

The MDB-2/HV PRO is remarkably silent with a sound level well below 70 dB(A). The blower is standardly placed in a sound absorbing box and the exhaust air is muted by a silencer on the outlet.

Fire prevention for the torch extraction system

The system contains a labyrinth SparkTrap, preventing sparks from reaching the filter cartridges. In addition, an optional Fire Suppression System can be installed.

Easily relocate the system when your workshop layout changes

In case of a relocation the extraction system is easily modified. The inlet has a quick connect coupling either on the left or the right side of the unit. Forklift holders are integrated at the bottom of the unit, as are adjustable feet to prevent instability of the extraction system.

* The maximum number depends on the specifications of the torch.


  • Central filter system for up to 10 fume extraction torches.
  • RamAirTM pulse amplifier for efficient cleaning and long filter life.
  • Low sound level of only 68 dB.
  • HMI with intuitive touch screen for easy insight in the filter system.
  • Extraction system can easily be relocated when the factory layout changes.
  • Dustbin level sensor optional


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Physical dimensions and properties

Material (housing):
Electro-zinc coated steel (according to DIN EN 10152)
Steel grade
Steel grade no.
Black RAL 9005
Cover plates
Grey RAL 7035
Weight (net):
Base incl. filter module
150 kg
Blower incl. housing
250 kg
Capacity of dustbin
80 litres
Air inlet position
Left or right side

Filter cartridges

Filter material
BiCo spunbond polyester with PTFE membrane
Filter surface area
2 x 10 m²
Welding fume class

W3 according to EN-ISO 21904-1:2020

Filter class
M according to DIN EN 60335-69

Compressed air system

Required compressed air quality
Dry and oil-free according to ISO 8573-3 class 6
Required pressure
5-10 bar
Compressed air connection
8 mm push-in fittng
Compressed air consumption (per pulse)
35 nl
Volume of compressed air tank
10 litres
Activation of filter cleaning system
Pressure controlled, online / offline


High vacuum side channel blower with pressure relief valve
Die-cast aluminium
12,5 kW at 50Hz
14,5 kW at 60Hz

The compact design of the MDB-2/HV PRO, in combination with a high air performance, is achieved by using 60 Hz fan technology. You must install the supplied VFD/Panel (frequency inverter) for 50 Hz power grids (e.g. in Europe) to have the motor run at 60 Hz frequency, thus getting 14,5 kW power.
Motor speed

max. 3360 rpm

Negative pressure
Max. 35.800 Pa at 550 m3/h
Available connection voltages
• 380V/3ph/50Hz (435)
• 480V/3ph/60Hz (536)
• 600V/3ph/60Hz (636)
Noise level
68 dB(A)
Protection class
IP 55


Extraction capacity
• 1000 m3/h at 14.000 Pa
• 850 m3/h at 23.000 Pa

Also refer to the performance chart on page 2 (Product Data Sheet at 'Downloads')

Options and accessories

External light tower to be used as additional signaling device

Product combinations

SHIELD fire safety solutions
All components of SHIELD, except for the sliding valves

Ambient conditions

Process temperature:
• 5°C (41°F)
• 20°C (68°F)
• 70°C (158°F)
Max. relative humidity
Suitable for outdoor use
Storage conditions
• 5-45°C (41-113°F)
• Relative humidity max. 80%

Scope of supply

Filter housing incl. filter cartridges, frame and compressed air regulation kit (CAR-KIT) – Dustbin – Blower – SparkTrap (spark arrester) – Panel (control panel) – HMI (Human Machine Interface) – VFD/Panel (frequency inverter)*) – Cable 15 m Panel to HMI – Connection and installation material

*) Except for article no. 0000118643

Order information

Article no.:
• 0000118635
MDB-2/HV PRO (435)
• 0000118548
MDB-2/HV PRO (536)
• 0000118638
MDB-2/HV PRO (636)
• 0000118643
MDB-2/HV PRO (without VFD/Panel)*)

*) An alternative motor starter to be arranged locally

MDB-2 High Vacuum Pro Brochure EN


MDB-2 High Vacuum Pro Product Data Sheet EN

Product data sheet

ControlPro Product Data Sheet EN

Product data sheet

ControlPro Connect Manual EN


ControlPro Connect - HMI Manual EN


MDB CE Declaration EN


The MDB is in accordance with the following directives:

  • Machine Directive 2006/42 EC
  • EMC 2014/30 EU
  • LVD 2014/35 EU
  • ErP Directive 2009/125 EC

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