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Air Cooled Oil Lubricated Vacuum Pump / Compressor | WITTIG SLS-54

The Gardner Denver Transport SLS-54 is a compact, lightweight, air cooled oil-lubricated vacuum pump and compressor designed for the collection and discharge of waste liquids from low volume suction vehicle and vacuum tankers including urban municipal vehicles.

We offer various configurations for each machine including compressor or vacuum only pumps with non-return valves. Alternatively we manufacture combined compressor/vacuum pumps complete with reverse flow valves.

Vacuum & Pressure Capability
Collection and discharge from a single unit 

Compact Installation
Low footprint for a wide range of vehicles 

Built for Tough Environments
Oil-lubricated design for durability and reliability 

Flexible Integration
Direct drive and hydraulic drive options available

Key Specifications

Flow Capacity (m³/h)

200 - 325

m³/h

Operating Pressure (bar)

2

bar

Weight (kg)

62 - 81

kg

 

Compact Vacuum / Compressor

The compact design of the SLS vacuum pump makes them suitable for a wide range of installations and can also be used for the discharge of pressure and vacuum tanks in combination with larger vacuum pumps to decrease loading times resulting in increased efficiency for your business. The SLS-54's design ensures complete technological flexibility.

Ease of Installation

The SLS pumps are simple to install on any type of vehicle with a range of drive options possible including direct drive and hydraulic drive.

 

Built in Efficiency

The oil lubricated vane design regulates the temperature of the machine during operation, ensuring vacuum levels remain at the optimal levels specified for your requirements.

 

Reliable in Tough Environments

The SLS vacuum pumps are oil lubricated by a continuously operating integral oil pump. This oil lubrication protects the compression components in corrosive environments which ensures high reliability and low cost maintenance.

 

 

Discover how a lighter, more compact compressor installation can help improve payload capacity and reduce transportation costs. Use our calculator to estimate the potential savings for your operation in just a few clicks.

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Liquid Discharge Applications

The SLS products are optimised for the collection and discharge of waste liquid products from low volume suction and waste vehicles. The compact design of these machines make them ideal for a number of specialist and bespoke applications, including agile urban municipal vehicles such as pick-up truck mounted vacuum tanks or even stationary electric drive packages.

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Liquid Bulk

Our tank-truck bulk liquid compressors and pumps collect or deliver your liquids from road tankers in the shortest times.

Industries

The WITTIG SLS-54 is engineered for vacuum and pressure applications across a variety of service and environmental operations, including: 

Designed for small to medium vacuum tankers and municipal service vehicles, the SLS-54 delivers reliable vacuum generation and pressure discharge performance for waste liquid collection, environmental services, sewer maintenance, and specialist cleaning operations. Its compact design and robust construction make it ideally suited to demanding day-to-day service applications.

The Latest Generation of SLS Compressor / Vacuum Pumps

When selecting a vacuum pump or compressor, the size and volume of the vehicle and tanker along with the space available for the pump installation all play a key role in deciding your vacuum pump. The SLS 54 offers a very low installation footprint whilst maintaining the high performance and efficiency of our legacy WITTIG product range. For the transfer of waste liquid product, the SLS 54 is the perfect choice of vacuum pump for all small to medium volume vacuum tankers or for any higher volume tankers where pressure discharge is required.

SLS Series Models

The documents identify the following models within the SLS range:

Model

Configuration

Flow Capacity

SLS 34

Rotary vane vacuum pump & compressor

200 m³/h

SLS 54

Rotary vane vacuum pump & compressor

325 m³/h

 

  • SLS 34
  • SLS 54
  • SLS 34 DV (pressure/vacuum version with 4-way valve)
  • SLS 54 DV (pressure/vacuum version with 4-way valve) 

Ancillaries

The SLS Series can be supplied with the following accessories and ancillary equipment: 

  • Non-return valve (prevents backflow during vacuum and pressure operation)
  • Pressure relief valve (protects the machine from over-pressure)
  • Vacuum ventilation valve (controls maximum vacuum level) 
  • Pressure / vacuum gauge 
  • Vacuum intake filter (also available with microfilter option) 
  • Cyclonic oil and water separator 
  • Exhaust silencer for noise reduction during suction operation 
  • Mounting plate or frame supplied with mounted machine and accessories 
  • Hydraulic drive connection kit including hydraulic trunk, coupling and fittings

Options & Configurations

  • Available as compressor-only units with non-return valve. 
  • Available as vacuum-only units with non-return valve. 
  • Available as combined compressor/vacuum pumps with reverse-flow (4-way) valve. 
  • Optional clockwise or anti-clockwise rotation. 
  • Multiple drive arrangements available:
    • Hydraulic drive
    • Flexible coupling
    • Petrol engine
    • Diesel engine
    • Electric motor
    • Vehicle PTO / auxiliary drive
    • V-belt drive 
Keep your SLS vacuum pump and compressor operating at peak performance with lifecycle-focused aftermarket support. Our protection agreements combine genuine parts, scheduled maintenance, and proactive health checks tailored to SLS 34 and SLS 54 units, helping to reduce unplanned downtime, maximize vehicle availability, and extend equipment life. Whether used for waste liquid collection, vacuum tanker operations, or municipal service applications, our support solutions help ensure reliable vacuum and pressure performance in demanding operating environments.  Choose the level of coverage that best fits your operation, from fixed-price parts supply to scheduled servicing and comprehensive support packages with on-site assistance, so you can manage maintenance costs with confidence and keep your fleet operating efficiently. 
  • Genuine GD parts and SLS service kits
  • Fixed-price parts for predictable budgeting
  • Scheduled maintenance by trained technicians
  • Proactive inspections of rotary vane elements, lubrication systems, seals, and critical pump components
  • Flexible coverage levels aligned to your fleet strategy
  • Optional on-site support, repairs, and overhauls
  • Expert guidance to maximize pump reliability, efficiency, and service life
Check Out Our Agreements

Download the SLS Flyer

982 KB, PDF
Download

Descargar el folleto SLS

1.5 MB, PDF
Download

Technical Documents

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SLS54 Installation Manual

Optimize Your Operations — Access the Gardner Denver IOM Guide Here!

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SLS54 Blade change IOM Manual

Access the step-by-step Operator Procedure Guide for blade removal and re-fitting on SLS 34/54 systems. Includes detailed instructions, health and safety precautions, and key tips for seamless operation and maintenance.

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