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LGDV cleaning adapter
for the fully automatic
RDT 09 mask washing machine

LA-Reinigung RDT 09


Product catalogue


RDT 09


Fully automated








of up to 09 respiratory protective masks

RDT 09

Article numbers:see below



Why use RDT 09?

Respiratory protective masks get exposed to a wide range of contaminants, such as dust, perspiration, bacteria and viruses, as well as dirt of all kinds. Hence, they need to be thoroughly cleaned and disinfected.

Cleaning and disinfecting respiratory protective masks manually is a time-consuming, and not entirely hygienic, process.

The fully automatic RDT 09 mask washing machine is designed for the gentle, hygienic and efficient back-to-back cleaning, disinfecting and drying of respiratory protective masks. After fastening the contaminated masks to the rotating mask holder by means of elastic straps, RDT 09 is started, and approximately 3.5 hours later the perfectly cleaned, disinfected, rinsed and dried masks can be taken out of the machine.

RDT 09 does not have a water heater. Hence, it is suitable primarily for use with disinfectants for cold disinfection. However, it is also possible to use disinfectants for hot disinfection and feed the machine with hot water (max. 30 °C) according to the disinfectant manufacturer’s specifications. In either case, it is important to use a disinfectant with cleaning properties (e.g. EW80 des) as the disinfectant doubles as a detergent.

How RDT 09 works

RDT 09 features a system of nozzles through which the disinfectant and clean water get sprayed onto the masks at regular intervals.The water is drawn directly from the water mains. RDT 09 adds the preset/required amount of disinfectant fully automatically. The air used for drying is heated to approximately 40 °C and blown into the mask chamber by means of a blower. The permanent rotation of the masks in the machine not only ensures that they get sprayed on all sides for perfect cleaning and disinfecting but also guarantees optimal drying.


RDT 09-2 RDT 09 loaded
Masks installed inside RDT 09 Masks fastened to mask holder


RDT 09 control panel RDT 09 wastewater pump  RDT 09 with wastewater pump Protective hood Filter head of disinfectant and detergent hose
Control panel External wastewater pump
(sold separately)
RDT 09 plus external
wastewater pump
Protective cover
(sold separately)
Filter head of disinfectant and detergent hose

Manual dirty/clean indicator

The machine comes with a manual dirty/clean indicator that makes it easy to quickly indicate whether the equipment in the machine is dirty or clean. The indicator is magnetic, but it can also effortlessly be installed on non-magnetic surfaces by means of the included double-sided adhesive pads.

Dirty/clean indicator: dirty Dirty/clean indicator: dircle Dirty/clean indicator: clean

Accessory: LGDV cleaning adapter

The LGDV cleaning adapter, which can be retrofitted at our factory, comes with Euro couplings and is designed for the gentle, hygienic and efficient back-to-back cleaning, disinfecting and drying of up to 9 lung-governed demand valves in approximately 3.5 hours.

During the cleaning and disinfecting cycle, the lung-governed demand valves are sprayed with disinfectant numerous times. RDT 09 adds the required amount of disinfectant in a fully automatic manner. During the drying cycle, heated air (max. 40 °C) flows through the rotating LGDVs before escaping into the ambient environment via an opening in RDT 09's housing.

If RDT 09 is equipped with an LGDV cleaning adapter, it can be loaded with up to 9 full-face masks AND 9 lung-governed demand valves. However, if the masks are heavily soiled, we strongly recommended refraining from loading the machine to capacity in order to guarantee optimal cleaning.

A medium pressure supply (max. 10 bar) is needed for processing LGDVs with RDT 09.

RDT 09: LGDV cleaning adapter (unloaded) RDT 09: Machine loaded with masks and LGDVs RDT 09: LGDV cleaning adapter (medium-pressure connector)  RDT 09: LGDV cleaning adapter (close-up of medium-pressure connector)
LGDV cleaning adapter installed in RDT 09 RDT 09 loaded with masks and LGDVs Medium-pressure connector for LGDV cleaning adapter

Scope of delivery

  • RDT 09 mask washing machine
  • power cord
  • water supply hose (2 m)
  • wastewater hose (2 m)
  • manual dirty/clean indicator (incl. double-sided adhesive pads)
  • accessories (vary depending on your order)
  • operator's manual

The following items are included if the machine comes with an LGDV cleaning adapter:

  • medium-pressure hose (1.5 m) and pressure reducer for the LGDV cleaning adapter
  • silicone spray grease for regreasing the couplings of the LGDV cleaning adapter
  • baskets for holding small LGDV component parts


capacity: up to 9 full-face masks
housing: stainless steel/texture-painted aluminium
dimensions (w x d x h): 900 x 650 x 950 mm
weight: approx. 65 kg
power supply: 230 V, 50 Hz
power consumption: max. 1.3 kW
water supply hose: ¾", length 2 m
wastewater hose: Ø 40 mm, length 2 m
water supply: cold water (max. 30 °C and max. 5 bar)
disinfectant consumtion: approx. 250 ml per load (at a concentration of 1%)
disinfectant concentration: 0.2% … 2% (freely adjustable)
controller: PLC (Siemens Logo)

Article numbers

Mask washing machine RDT 09 330-487
External wastewater pump 330-499
Kit for drawing disinfectant solution from RDT 09 330-516
LGDV cleaning adapter for RDT 09 (up to 9 LGDVs) 330-649
Protective cover 330-831
Pressure reducer for regulating the water supply pressure 250-085
Dehumidifier on request
Special holder for half-face masks on request

Maintenance and care

Stainless-steel cleaner (500 ml) 330-544
Metal restorer (400 g) 330-554
Silicone spray grease for regreasing the couplings of the LGDV cleaning adapter 190-002
Water softener 330-746
Disinfectant EW80 des 1 l   (concentration: 1%, effective against TB at a 30-min dwell time) 330-417
Disinfectant EW80 des 5 l   (concentration: 1%, effective against TB at a 30-min dwell time)


Product flyer
Product flyer (LGDV cleaning adapter)
© Resposible for the site's content: Andreas MENZL / Fritz MENZL. Errors and omissions excepted. Subject to change without notice.