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Safety at the
push of a button

A.S.K. 450 and
A.S.K. 250

NEW:
Now with
certified safety
more

The pneumatic
safety valve

The valve is operated by compressed air and can be set to the position OPEN/CLOSED at the touch of a button.

Suitable for all common floor, yard and street drains: 500 x 500 mm (type 450) and 500 x 300 mm (type 250).

Special sizes or custom-made products available on request.

The A.S.K. has been used for many years in all industries that work with substances hazardous to water. Thanks to the materials used and the high-quality workmanship, annual maintenance is sufficient to ensure the functionality of the valve.

The valves are DIBt-approved and comply with the requirements of the ATEX directive according to 94/9/EC

Contact one of our service representatives now:

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Features

  • For plants that store, fill, produce and treat substances hazardous to water according to section 62 WHG/AwSV (plants handling substances hazardous to water)
  • Can be used in potentially explosive atmospheres
  • Prevents unwanted substances from entering the sewer system during accidents, fire-fighting and cleaning
  • Installation in all yard and street drains in accordance with DIN EN 124, DIN 19583 and DIN 19594 and all common floor drains (depending on the version with additional adapter)
  • Due to the identical installation frame, both models have the same installation dimensions, which means that they are interchangeable
  • Available as standard in sizes 500 x 500 mm (type 450) and 500 x 300 mm (type 250)
  • Special sizes or custom-made products available on request

Advantages

  • Escaping substances hazardous to water are retained and prevented from entering the sewer system
  • Use of high-quality materials: A.S.K. are unaffected by dirt and ice. Resistant to oils, greases, fuels, acids and chemicals.
  • The following operating states are possible: the closed safety valve is only opened during or after precipitation. The open safety valve is only closed in hazardous situations.
  • Also simple to retrofit in existing floor drains
  • Simple operation: the safety valve can be opened/closed at the flick of a wrist . This is also possible without taking up the gully grating if the road or area has already been flooded
  • Low maintenance
  • Can be connected in series

Single

Group

Our A.S.K. with automatic operation can be hermetically sealed simply by pressing a button, even from greater distances.

Our A.S.K. with automatic operation can be hermetically sealed simply by pressing a button, even from greater distances.

It also possible to connect several gullies in series and operate them simultaneously.

Data sheet ASK 250 A Data sheet ASK 450 A

Technical data:

Type:
A.S.K. gully safety valve
Design pressure:
0,5 bar; 5m Ws
Design temperature:
up to 80°C
Operating pressure:
5 bar
Flow media:
Contaminated waste water
(e.g. oils, greases, fuels, acids and chemicals)
Nominal size:
For all common floor, yard and street drains 500 x 500 mm (type 450) and 500 x 300 mm (type 250)
Special sizes or custom-made products:
available on request

Materials:
Mounting frame:
Stainless steel
Housing:
Grey cast iron, phosphated
Plate:
Stainless steel
Shaft:
Stainless steel
Sealing element:
Viton
Patent:
Patent protected

How can we help?

We recommend our manual A.S.K. to upgrade your existing sewer system. It is simple to install in just a few steps.
Needless to say, our automatic A.S.K. can also be retrofitted in an existing sewer system. Four holes and special concrete dowels are normally sufficient to fasten the gully safety valve in the sewer inlet. A sealing compound (Sikaflex) is used to make the valve impermeable to liquids. Finally, a leak test is performed.

In most cases our manual A.S.K. is suitable for existing sewer inlets. Automated and mechanical models are equally suitable for new sewer systems.
The automated A.S.K. is controlled with compressed air and via a control panel. Compressed air is supplied underground to the A.S.K. and the valve plate is opened or closed at the push of a button. When the pressure drops in the pneumatic system, the weight of the valve plate causes it to move to the closed position, securing the valve to 90%.

Thanks to the identical frames, the valve systems can be exchanged at any time. Compressed air lines must be installed if you wish to switch to an automatic valve.

  • Simple operation
  • Low maintenance
  • State-of-the-art technology in function and design
  • Can be used in potentially explosive atmospheres
  • 20-year warranty (except wear parts)
  • DIBt-approval

Our A.S.K. help prevent environmental disasters. Contact your insurer to see if protecting your sewer system could lead to a reduction in your premium.

Our qualified specialists are available for maintenance, servicing and repair work to ensure that DIBt-compliant approval is maintained during operation and to provide the documentation required by the industrial safety ordinance (BetrSichV).

Manual A.S.K.:

  • Dirt strainer
  • Basket filter

Automatic A.S.K.:

  • Dirt strainer
  • Basket filter
  • Control cabinet with compressed air bottles and control panel  
  • Control panel in wall cabinet with glass pane and emergency hammer
  • Control panel on stand with signal lamp

In 2020 our A.S.K. received DIBt approval. Scherzer Umwelttechnik GmbH is an approved specialist according to the Federal Water Act (WHG) and is certified according to ISO 9001:2015.

The A.S.K. prevents environmentally hazardous substances from entering your sewer system. Ask your insurer about reducing your insurance premium.

Your engineering and sales contact:

Ralf Kuchler
T. +49 201 855 14 - 21
F. +49 201 855 14 - 36
r.kuchler@scherzer.net

Your contact:

Michael Koch
T. +49 (0)201 8551 441
F. +49 (0)201 8551 436
koch@scherzer.net

The manual
safety valve
Safety at the flick of a wrist
To the product

Sicherheit per
Knopfdruck

A.S.K. 450 und
A.S.K. 250