Single filter, automatic filter, double filter and oil mist separator



Modern filtration systems for diverse applications

Broad product selection meets comprehensive service offering

In addition to single filters, automatic filters, double filters and oil mist separators, we offer a wide range of accessories and matching filter media. From the jacket sieve to ring and basket sieves to sieve candles and filter cartridges. The transparent and targeted services, from consulting to final acceptance, complete the offer.



Our products

Simple filter

General about single filters

Single filters are the basic model of filter technology. As with the switchable double or automatic filters, various screen element designs with the different filter media can be installed in the single filters. Single filters are used wherever interruption of the media flow during cleaning is acceptable.

Application fields

Simple protective filters in industrial plants, power plants, and municipal operations


Advantages of single filters

  • Compact design
  • Easy installation
  • Large filter area
  • Low pressure drop


Technical features

  Housing:  Graphite cast iron, stainless steel cast iron, steel or stainless steel welded
  Nominal size:  DN 25 - DN 350
  Pressure stage:  PN 10 - PN 40 (higher pressure stage on request)
  Filter fineness:  10 µm - 5000 µm


Automatic filter

General about automatic filters

Automatic filters are equipped with cylindrical elements or fabric or split cartridges. These are cleaned automatically by backwashing without interrupting operation. This can be done as a function of differential pressure or time by filtered or compressed air-assisted intrinsic medium. Automatic filters are used when manual cleaning becomes uneconomical in the case of continuous contamination, or when the operating plant is largely automated.

Application fields

Continuous, fully automated filtration tasks in industrial plants, power plants, manufacturing plants and municipal operations. E.g. cooling, industrial, drinking, and waste water; emulsion; cooling lubricant; fuel


Advantages of automatic filters

  • Uninterrupted filtration
  • Fully automatic cleaning/minimal maintenance
  • Various applications
  • Suitable for large amounts of dirt
  • Variable design
  • Low flushing volume


Technical features

  Housing:  Graphite cast iron, welded steel or stainless steel
  Nominal connection size:  DN 40 - DN 1000
  Pressure stage:  PN 10 - PN 25 (higher on request)
  Filter fineness:  10 µm - 5000 µm


Double filter

General about double filters

Double filters consist of two filter housings - connected via a switchover fitting. While one filter half is being cleaned, the other filter half is running in normal operation. In duplex filters, the changeover from one filter chamber to the other takes place without pressure surges. Afterwards, the soiled screen insert is cleaned manually while the plant continues to run. The simultaneous shutdown of both filter chambers is excluded by the design of the double filter.

Application fields

Continuous filtration tasks in industrial plants, power plants and municipal plants


Advantages of double filters

  • Uninterrupted filtration
  • Pressure surge-free switching between filter chambers
  • Simple installation
  • Large filter area
  • Low pressure drop


Technical features

  Housing:  Graphite cast iron, stainless steel cast iron, steel or stainless steel welded, stainless steel without welds
  Nominal size:  DN 25 - DN 250
  Pressure stage:  PN 10 - PN 100
  Filter fineness:  1 µm - 5000 µm


Oil mist separator

General information about oil mist separators

Oil mist separators prevent oil leakage from seals of large plain bearings, crank gears or gearboxes. Oil mist extractors are another design of these filter systems. These can extract emulsion mist from machine tools. The oil mist is prevented from escaping by suctioning off the machine parts and creating a slight vacuum. The oil/air mixture is separated back into oil and air in the oil mist separator. Lubricating oil is recovered and air is released back into the environment.

Application fields

  • Sliding bearings of generators, turbines and pumps
  • Crankcases of compressors and motors
  • Large gearboxes
  • Machine tools


Advantages of an oil mist separator

  • Oil leakage from seals is prevented
  • Emulsion mist from machine tools is extracted
  • Long service life of the filter elements
  • Uniform separation
  • Minimal maintenance
  • Individual design of the devices
  • 100 % lubricating oil recovery, oil quality is not influenced
  • Suction of several machine parts with one oil mist separator possible


Technical features

  • mechanical oil separation by coalescence
  • guaranteed residual oil content < 20 mg/m³ at a particle size of 0.1 µm
  • suction volume 10 - 2500 Nm³/h
  • service life of the filter elements of oil mist separators: up to 30,000 h



Project services

With Schmachtl Project Services you are in good hands from the start of your project. 

From the consultation meeting to technical support. We support you so that you can implement your project




1.  Technical consultations:

- For new applications/developments

- Replacement types alternative for existing


2. online/on-site demonstrations/


3. training & continuing education



1.  Process analysis-needs assessment

2.  Conceptual design/planning/


3. Conceptual design/planning/


4.  Particle analysis

Manufacturing Services

1.  Assembly/

subassembly assembly

2.  Pre-assembly

3. Insertion

4.  Assembly/

5.  Commissioning/calibration

6.  Start-up support/performance check

7. CE conformity assessment

8.  Retrofit: Modernization &

retrofit, equipment replacement

Ongoing additional services

1.  Service Packages: Maintenance/

Repairs (emergency call for breakdowns)

/Monitoring Services

2.  Technical Support

Logistics services

With our logistics services you have the possibility to choose between different

delivery and storage options. We support you. 


delivery options

1.  Collective deliveries

2.  Demand site deliveries

3. Consignment warehouse

4.  Flexible delivery times

Packaging Solutions

1.  Customized goods



packaging industry

(collective packaging)

2.  Special packaging

Storage options

1.  Frame contracts:

Stock in stock



Our partners


Contact us for more information about our products and services. We are happy to assist you.

Other information


Heat Exchangers




Automatic river water filtration